Instruction Manual 305s CHAIN SAW Burn Hazard

x7722271404 / x772000164
305s
CHAIN SAW
Instruction Manual
Burn Hazard
The muffler or catalytic muffler and surrounding cover may become extremely hot.
Always keep clear of exhaust and muffler area, otherwise serious personal injury may
occur.
The engine exhaust from this product contains chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
Users of this equipment risk injury to themselves and others if the unit is used
improperly and/or safety precautions are not followed. ECHO provides an operator’s
manual and a safety manual. Both must be read and understood for proper and safe
operation. Failure to do so could result in serious injury.
Specifications, descriptions and illustrative material in this literature are as accurate as known at the time
of publication, but are subject to change without notice. Illustrations may include optional equipment and
accessories, and may not include all standard equipment.
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TABLE OF CONTENTS
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TABLE OF CONTENTS
Table of Contents .................................................................................................................................................................. 2
Packing List ........................................................................................................................................................................... 3
Safety..................................................................................................................................................................................... 4
Rules For Safe Operation ............................................................................................................................................... 4
Correct Use Of Chain Brake ........................................................................................................................................... 5
Personal Condition and Safety Equipment ..................................................................................................................... 7
Symbols and Signs ....................................................................................................................................................... 11
Manual Safety Symbols and Important Information...................................................................................................... 12
Emission Control (Exhaust / Evaporative) ........................................................................................................................... 12
CARB And EPA Emissions Control Information ........................................................................................................... 12
Description ........................................................................................................................................................................... 13
Preparation For Use ..................................................................................................................................................... 15
Operation ............................................................................................................................................................................. 17
Fuel............................................................................................................................................................................... 17
Chain Lubricant ............................................................................................................................................................ 19
Winter Operation .......................................................................................................................................................... 20
Starting Cold Engine..................................................................................................................................................... 20
Starting Warm Engine .................................................................................................................................................. 21
Running ........................................................................................................................................................................ 22
Stopping ....................................................................................................................................................................... 22
Checking Chain Tension .............................................................................................................................................. 22
Chain Lubrication Test.................................................................................................................................................. 23
Cutting Instructions ....................................................................................................................................................... 23
Chain And Guide Bar Combination............................................................................................................................... 26
Guide Bar ..................................................................................................................................................................... 27
Saw Chain .................................................................................................................................................................... 27
Maintenance ........................................................................................................................................................................ 28
Skill Levels.................................................................................................................................................................... 28
Maintenance Intervals .................................................................................................................................................. 28
Carburetor Adjustment ................................................................................................................................................. 29
Air Filter ........................................................................................................................................................................ 30
Spark Plug .................................................................................................................................................................... 30
Check Fuel System ...................................................................................................................................................... 30
Fuel Filter...................................................................................................................................................................... 30
Oil Filter ........................................................................................................................................................................ 31
Guide Bar ..................................................................................................................................................................... 31
Sprocket ....................................................................................................................................................................... 31
Cooling System Cleaning ............................................................................................................................................. 31
Spark Arrestor Muffler................................................................................................................................................... 32
Spark Arrestor Screen .................................................................................................................................................. 32
Exhaust Port Cleaning .................................................................................................................................................. 32
Setting The Saw Chain ................................................................................................................................................. 33
Troubleshooting ................................................................................................................................................................... 36
Storage ................................................................................................................................................................................ 37
Storage After Use ......................................................................................................................................................... 37
Technical Data ..................................................................................................................................................................... 38
Warranty Statements ........................................................................................................................................................... 39
Product Registration ............................................................................................................................................................ 41
Notes ................................................................................................................................................................................... 42
Servicing Information ........................................................................................................................................................... 43
Parts/Serial Number ..................................................................................................................................................... 43
Service.......................................................................................................................................................................... 43
Consumer Product Support .......................................................................................................................................... 43
Product Registration ..................................................................................................................................................... 43
Additional or Replacement Manuals ............................................................................................................................. 43
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PACKING LIST
PACKING LIST
The Shindaiwa product you purchased has been factory pre-assembled for your convenience. Due to
packaging restrictions, some assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or Shindaiwa Dealer of
damaged or missing parts. Use the contents list to check for missing parts.
_____ 1 - Power Head
_____ 1 - Instruction manual
_____ 1 - Emission Control Warranty Statement
_____ 1 - Safety Manual
_____ 1 - Guide bar
_____ 1 - Saw chain
_____ 1 - Guide Bar Cover
_____ 1 - Tip Guard Assembly
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SAFETY
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SAFETY
Rules For Safe Operation
1. Fatigue causes carelessness. Be more cautious before rest
periods and before the end of your shift.
For more information
scan this QR code.
2. Personal protective clothing required by your safety
organizations, government regulations, or your employer
should be used; otherwise, snug fitting clothing, protective
eyewear, safety footwear and hand, leg and hearing
protection should be worn.
Note: Personal protective clothing should meet the
requirements of applicable Standards.
Rotational kickback
3. Before fueling, servicing or transporting your chain saw
switch off the engine. To help prevent fire, restart your chain
saw at least 3 m from the fueling area.
4. When using a chain saw a fire extinguisher should be
available.
5. When felling, keep at least 2 tree lengths between yourself
and your fellow workers.
Rotational kickback
6. Plan your work; assure yourself of an obstacle-free work
area and, in the case of felling, have at least one escape
path from the falling tree prepared in advance
7. Follow instructions in your operator’s manual for starting the
chain saw and control the chain saw with a firm grip on both
handles when it is in operation. Keep handles dry, clean and
free of oil. A chain saw should never be carried with the
engine running.
Chain moving downward at impact
8. When transporting your chain saw, use the appropriate
transportation covers that should be available for the guide
bar and saw chain.
Kickback Danger Zone
9. Never operate a chain saw that is damaged, improperly
adjusted, or is not completely and securely assembled. Be
sure that the saw chain stops moving when the throttle
control trigger is released. Never adjust the guide bar or saw
chain when the engine operating.
10. Beware of carbon monoxide poisoning. Operate the chain
saw in well-ventilated areas only.
Linear kickback
Pinch
11. Do not attempt a pruning or liming operation in a standing
tree unless specifically trained to do so.
12. Guard against kickback. Kickback is the upward motion of
the guide bar, which occurs when the saw chain, at the nose
of the guide bar, contact an object. Kickback can lead to
dangerous loss of the chain saw.
Kickback
TO AVOID KICKBACK:
a. Contact of the guide bar tip with any object should be avoided.
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b. Tip contact may cause the guide bar to move suddenly upward and backward which may cause
serious injury.
c. Always use two hands when operating the chain saw.
d. Use a firm grip, thumbs and fingers encircling the handles.
e. Don’t overreach.
f.
Avoid cutting above shoulder height.
g. Follow the manufacture’s instructions for sharpening and maintenance of the saw chain.
13. When boring with the chain saw, the initial cut should be introduced with the lower part of the nose (tip)
until the hole is sufficiently large so as to introduce the entire nose (tip) of the guide bar. This technique
should reduce the danger of kickback.
14. A chain saw is intended for two-handed use. Serious injury to the operator, helpers and/or bystanders
may result from one-handed operation.
a. Allow your chain saw to cool before refueling, and do not smoke while refueling.
b. Do not allow other persons or animals close to running chain saw or close to where a tree is
being felled.
c. Use extreme caution when cutting small size brush and saplings because slender material
may catch the saw chain and be whipped toward you.
d. When cutting a limb that is under tension be alert for spring-back.
Correct Use Of Chain Brake
Chain Brake Operation
• Set the lever in the unlocked position before starting to cut.
Locked
• If the brake is tripped by kickback reaction, the chain will stop
immediately. Release the throttle to avoid possible damage to
the engine or clutch.
• Do not attempt to operate the engine with the brake locked.
Testing The Brake
• Start the engine on a solid level surface and run at a fast idle
until warm.
Unlocked
• Hold the saw firmly by the handles and accelerate the engine
to a fast idle.
• Slowly operate the chain brake lever while holding the saw
firmly on the ground. When the brake lever trips, the chain
should stop. Immediately release the throttle trigger.
Do not allow the saw to tip forward in order to avoid damage to the chain.
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If the chain does not stop immediately, return the saw to your authorized dealer for repair.
Note:
• For practice, while cutting a small tree, push the lever forward to lock the brake.
• Confirm that the brake works properly before each use.
• If the chain brake is clogged with wood chips, function of the brake may deteriorate. Always keep the
device clean.
• Do not increase engine RPM's while the chain brake is locked.
The installation of a chain brake may be mandatory by law or as stipulated by insurance regulations in your
area of operation. You should inquire through local government offices, your employer or your local dealer to
ensure that your chain saw conforms to the required safety standard.
Chain brakes have been designed and tested to comply with international safety standards as follows.
Canada: CSA Standard Z62.1, Z62.3
USA: ANSI Standard B175.1 Safety Requirement for chain saws
CSA Z62.1, .3 stipulates that the brake shall stop the chain 0.12 seconds at an engine speed of
13,500 r/min. It is the responsibility of the owner/operator to ensure that the brake is serviced,
adjusted and tested strictly in accordance with the instructions as detailed herein in order to ensure
that the brake performance is maintaind in compliance with the Standard CSA Z62.1, .3.
Automatic Chain Brake
Kickback produced from the tip of the guide bar will trip the
automatic chain brake. To make sure that the automatic chain
brake operates properly, follow these steps:
1. Stop the engine.
2. Hold the saw with the guide bar approximately 35 cm (14
in.) above a wooden surface. Right hand should hold the
rear handle, and left hand should hold the front handle.
35 cm
(14 in.)
3. Release the front handle and drop the end of the guide bar
against the wooden surface.
4. The impact should lock the chain brake.
When checking the operation of the automatic chain brake, use
a soft surface substance like wood to absorb the impact so the
chain is not damaged.
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Chain saws shall be used in accordance with the operating instructions and safety precautions
listed in the operator's manual(s). It shall be the responsibility of the owner to see that such
instructions and precautions are given to every operator who uses the saw.
• During operation, the muffler or catalytic muffler and surrounding cover become hot.
• Never suspend the saw on a lanyard with the engine running.
• Always use the saw from the right-hand side of your body – NEVER from the left side.
• Always wear proper safety clothing to protect your lower body from sharp saw chain and hot
muffler.
• Always keep exhaust area clear of flammable debris during transportation or when storing,
otherwise serious property damage or personal injury may result.
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects
away from all openings.
• ALWAYS stop engine, disconnect spark plug, and make sure all moving parts have come to a
complete stop before removing obstructions, clearing debris, or servicing unit.
• DO NOT start or operate unit unless all guards and protective covers are properly assembled to
unit.
• NEVER reach into any opening while the engine is running. Moving parts may not be visible
through openings.
Using improper replacement components or removing safety devices may result in serious or fatal
injury.
Check fuel system for leaks due to fuel tank damage, especially if the unit is dropped. If damage or
leaks are found, do not use unit, otherwise serious personal injury or property damage may occur.
Have unit repaired by an authorized servicing dealer before using.
Personal Condition and Safety Equipment
Users of this product risk injury to themselves and others if the unit is used improperly and/or safety
precautions are not followed. Proper clothing and safety gear must be worn when operating unit.
Physical Condition
Your judgment and physical dexterity may not be good:
• If you are tired or sick.
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• If you are taking medication.
• If you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
• Eye protection that meets ANSI Z87.1 or CE requirements must be worn whenever you operate the
unit.
• For additional safety, a full-face shield may be worn over safety glasses or goggles to provide
protection from sharp branches or flying debris.
Hand Protection
Wear sturdy, no-slip, rubber work gloves to improve your grip on the handles. Gloves also provide protection
against cuts and scratches, cold environments, and reduce the transmission of machine vibration to your
hands.
Hearing/Ear Protection
ECHO recommends wearing hearing protection whenever unit is used.
Breathing Protection
Operators who are sensitive to dust or other common airborne allergens may need to wear a dust mask to
prevent inhaling these materials while operating unit. Dust masks can provide protection against dust, plant
debris, and other plant matter such as pollen. Make sure the mask does not impair your vision, and replace
the mask as needed to prevent air restrictions.
Proper Clothing
Wear snug-fitting, durable clothing:
• Pants should have long legs, shirts should have long sleeves.
• DO NOT WEAR SHORTS.
• DO NOT WEAR TIES, SCARVES, JEWELRY, or clothing with loose or hanging items that could become
entangled in moving parts or surrounding growth.
• Keep clothing buttoned or zipped, and keep shirt tails tucked in.
Wear sturdy work shoes with nonskid rubber soles:
• DO NOT WEAR OPEN TOED SHOES.
• DO NOT OPERATE UNIT BAREFOOTED.
Keep long hair away from engine and air intake. Retain hair with cap or net.
Heavy protective clothing can increase operator fatigue, which may lead to heat stroke. Schedule heavy
work for early morning or late afternoon hours when temperatures are cooler.
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The components of this machine generate an electromagnetic field during operation, which may
interfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with
pacemakers should consult with their physician and the pacemaker manufacturer before operating
this machine. In the absence of such information, ECHO does not recommend the use of this
machine by anyone who has a pacemaker.
Extended Operation / Extreme Conditions
Prolonged exposure to cold and/or vibration may result in injury. Read and follow all safety and
operation instructions to minimize risk of injury. Failure to follow instructions may result in painful
wrist/hand/arm injuries.
It is believed that a condition called Raynaud’s Phenomenon, which affects the fingers of certain individuals,
may be brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling
and burning sensations, followed by loss of color and numbness in the fingers. The following precautions are
strongly recommended, because the minimum exposure, which might trigger the ailment, is unknown.
• Keep your body warm, especially the head, neck, feet, ankles,
hands, and wrists.
• Maintain good blood circulation by performing vigorous arm
exercises during frequent work breaks, and also by not
smoking.
• Limit the hours of operation. Try to fill each day with jobs
where operating the unit or other hand-held power equipment
is not required.
• If you experience discomfort, redness, and swelling of the
fingers followed by whitening and loss of feeling, consult your physician before further exposing yourself to
cold and vibration.
Repetitive Stress Injuries (RSI)
It is believed that overusing the muscles and tendons of the fingers,
hands, arms, and shoulders may cause soreness, swelling,
numbness, weakness, and extreme pain in those areas. Certain
repetitive hand activities may put you at a high risk for developing a
Repetitive Stress Injury (RSI). An extreme RSI condition is Carpal
Tunnel Syndrome (CTS), which could occur when your wrist swells
and squeezes a vital nerve that runs through the area. Some believe
that prolonged exposure to vibration may contribute to CTS. CTS
can cause severe pain for months or even years.
To reduce the risk of RSI/CTS, do the following:
• Avoid using your wrist in a bent, extended, or twisted position.
Instead try to maintain a straight wrist position. Also, when
grasping, use your whole hand, not just the thumb and index finger.
• Take periodic breaks to minimize repetition and rest your hands.
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• Reduce the speed and force with which you do the repetitive movement.
• Do exercise to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doctor if you feel tingling, numbness, or pain in
the fingers, hands, wrists, or arms. The sooner RSI/CTS is diagnosed, the more likely permanent nerve
and muscle damage can be prevented.
All over head electrical conductors and communications wires can have electricity flow with high
voltages. This unit is not insulated against electrical current. Never touch wires directly or indirectly,
otherwise serious injury or death may result.
Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains
poisonous emissions and can cause serious injury or death.
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Symbols and Signs
Symbol form/shape
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Symbol description/application
Symbol form/shape
Symbol description/application
WARNING!
Read and follow all safety
precaution in the instruction
manual. Failure to follow
instructions could result in serious
personal injury.
Choke control “COLD START”
position (choke closed)
Wear Eyes, Ears And Head
Protection
Oil And Gasoline Mixture
Tip contact may cause the guide
bar to move suddenly upward and
backward, which may cause
serious injury
Chain Oil Fill
Contact of the guide bar tip with
any object should be avoided
Chain Oiler Adjustment
Both of the operator’s hands must
be used to operate the chain saw
Purge Pump
Hot Surface
Carburetor Adjustment Low Speed Mixture
Chain Brake Operation
Carburetor Adjustment High Speed Mixture
Emergency Stop
Carburetor Adjustment Idle Speed
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EMISSION CONTROL (EXHAUST / EVAPORATIVE)
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Manual Safety Symbols and Important Information
Throughout this manual and on the product itself, you will find safety alerts and helpful, informational
messages preceded by symbols or key words. The following is an explanation of those symbols and key
words and what they mean to you.
The safety alert symbol accompanied by the word “DANGER” calls attention to an act or condition
which WILL lead to serious personal injury or death if not avoided.
The safety alert symbol accompanied by the word “WARNING” calls attention to an act or condition
which CAN lead to serious personal injury or death if not avoided.
The safety alert symbol accompanied by the word “CAUTION” calls attention to an act or condition
which may lead to minor or moderate personal injury if not avoided.
The enclosed message provides information necessary for the protection of the unit.
Note: This enclosed message provides tips for use, care and maintenance of the unit.
CIRCLE AND SLASH SYMBOL
This symbol means the specific action shown is prohibited. Ignoring these prohibitions can result
in serious or fatal injury.
EMISSION CONTROL (EXHAUST / EVAPORATIVE)
CARB And EPA Emissions Control Information
The emission control system for the engine is EM (engine modification)
and, if the second to last character of the Engine Family on the Emission
Control Information label (sample below) is “B”, “C”, “K”, or “T”, the
emission control system is EM and TWC (3-way catalyst). The fuel
tank/fuel line emission control system is EVAP (evaporative emissions).
Evaporative emissions for California models are only applicable to fuel
tanks.
An Emission Control Label is located on the engine. (This is an
EXAMPLE ONLY, information on label varies by engine FAMILY).
Product Emission Durability (Emission Compliance Period)
The 50 or 300 hour emission compliance period is the time span
selected by the manufacturer certifying the engine emissions output
meets applicable emissions regulations, provided that approved
maintenance procedures are followed as listed in the Maintenance Section of this manual.
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DESCRIPTION
DESCRIPTION
Locate the safety decal(s) on your unit. Make sure the decal(s) is legible and that you understand and follow
the instructions on it. If a decal cannot be read, a new one can be ordered from your Shindaiwa dealer. See
PARTS ORDERING instructions for specific information.
1
11
2
10
9
3
8
7
6
5
4
12
13
14
22
15
21
20
19
18
17 16
United States
Canada
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DESCRIPTION
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1. CHAIN BRAKE LEVER/FRONT HAND GUARD - Locks and unlocks the chain brake to stop or allow
saw chain rotation. Guard between the front handle and the saw chain helps protect the hand from
injuries if the hand slips off the handle.
2. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER WITH CATALYST - The muffler or
catalytic muffler controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing
particles of carbon from leaving the muffler. Keep exhaust area clear of flammable debris.
3. TIP GUARD - Anti-kickback device attached to the bar nose.
4. SAW CHAIN - Chain, serving as a cutting tool.
5. GUIDE BAR - The part that supports and guides the saw chain.
6. CHAIN CATCHER - A projection designed to reduce the risk of the operator’s right hand from being hit
by a chain which has broken or derailed from the guide bar during cutting.
7. CHAIN TENSION ADJUSTER - Device to adjust chain tension.
8. CHAIN BRAKE/SPROCKET GUARD - Protective cover for the chain brake, guide bar, saw chain,
clutch, and sprocket when the chain saw is in use.
9. REAR HAND GUARD - Extension on the lower part of the rear handle for protecting the hand from the
chain if it breaks or derails.
10. PURGE PUMP - When starting engine, push purge pump 3 or 4 times.
11. CHOKE CONTROL KNOB - Device for enriching the fuel/air mixture in the carburetor to aid cold
starting. Also activates fast idle throttle latch.
12. CYLINDER COVER - The cooling airflow grill. It covers the cylinder, spark plug and silencer.
13. SPARK PLUG - Provides spark to ignite fuel mixture.
14. THROTTLE TRIGGER LOCKOUT - A safety lever which must be depressed before the throttle trigger
can be activated. Prevents accidental operation of the throttle trigger.
15. REAR HANDLE - FOR THE RIGHT HAND - Support handle located towards the rear of the engine
housing.
16. THROTTLE TRIGGER - Device activated by the operator’s finger, for controlling the engine speed. Also
releases fast idle throttle latch when squeezed and released immediately after starting engine.
17. IGNITION SWITCH - Device for connecting and disconnecting the ignition system and thus allowing the
engine to be started or stopped.
18. FUEL TANK CAP - For sealing the fuel tank.
19. CYLINDER COVER LATCH - Secures cylinder cover.
20. STARTER HANDLE - Pull handle slowly until starter engages then quickly and firmly. When engine
starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
21. FRONT HANDLE - FOR THE LEFT HAND - Support handle located at the front of the engine housing.
22. OIL TANK CAP - For sealing the oil tank.
CHAIN SAW TERMS
1. FAST IDLE -Throttle setting that causes engine to operate at a faster speed for easier starting.
2. THROTTLE LATCH - Device that sets idle speed to fast idle when choke control is operated.
3. CHAIN BRAKE - Stops the saw chain.
4. DRIVE SPROCKET - Drives saw chain.
5. CLUTCH - Turns drive sprocket when engine rpm is fast enough to provide the power needed for cutting.
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DESCRIPTION
Preparation For Use
Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury
may result.
Note: The machine may be delivered with guide bar, tip guard, and
saw chain separated. Install guide bar, tip guard, and saw
chain as follows.
For more information
scan this QR code.
Tip Guide to Bar Instructions
A
Tools Needed: Adjustable wrench.
For saws with tip guard P/N 2894901 and Symmetrical or
Asymmetrical Low-Kick type (Double Guard) guide bars:
1. Install 1/4 - 28 bolt in large hole of tip guard and through front
large hole in guide bar.
2. IMPORTANT: Dimple (A) in tip guard must engage recess (B)
in guide bar.
B
3. Securely tighten nut and bolt.
For saws with tip guard P/N 2894901 and Symmetrical or
Asymmetrical Low-Kick type (Pro-Lite) guide bars:
1. Install 8-32 bolt in small hole of tip guard and through small hole in center of bar nose.
2. IMPORTANT: Dimple (A) in tip guard must engage recess (B) in guide bar.
3. Securely tighten nut and bolt.
Guide Bar and Saw Chain Installation/Removal
1. Release the cylinder cover latches, and remove the cylinder
cover.
For more information
scan this QR code.
2. Remove spark plug lead.
3. Remove sprocket guard nuts (A) and remove sprocket guard
(B).
4. Remove guide bar and saw chain if necessary.
Note: See “Maintenance and Care” section for guide bar/saw chain
maintenance procedures.
A
B
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DESCRIPTION
5. Unlock the chain brake, and mount guide bar on studs (C) and
slide toward sprocket (E) to make saw chain installation easier.
Install chain with cutters on top of guide bar facing forward.
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C
E
F
D
A
B
6. Install the sprocket guard over the guide bar studs. Ensure
chain tension adjuster pin (F) fits into the guide bar adjuster
hole (D). Tighten sprocket guard nuts finger tight.
7. Adjust saw chain tension, as instructed in “Adjustment, Chain
Tension”.
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OPERATION
Adjusting Chain Tension
Always loosen sprocket guard nuts before turning the chain tension
adjuster, otherwise the sprocket guard and tensioner will be
damaged.
For more information
scan this QR code.
1. Release the cylinder cover latches, and remove the cylinder
cover. Remove spark plug lead.
2. Loosen sprocket guard nuts.
3. Hold the bar nose up, and turn the adjuster screw (A) clockwise
until chain contacts underside of the bar.
4. Tighten nuts with the bar nose held up.
A
5. Pull the chain around the bar by hand. Loosen the adjustment if
you feel tight spots.
Tighten guide bar nuts to 20 - 23 N•m (175 - 200 in•lbf). DO NOT
over-tighten nuts. Damage to saw may result.
6. Assemble components in reverse order.
7. Keep chain properly tensioned at all times.
Note: All chains require frequent adjustments.
OPERATION
Fuel
Alternative fuels, such as E15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting Shindaiwa
requirements are NOT approved for use in Shindaiwa gasoline engines. Use of alternative fuels may
cause performance problems, loss of power, overheating, fuel vapor lock, and unintended machine
operation, including, but not limited to, improper clutch engagement. Alternative fuels may also
cause premature deterioration of fuel lines, gaskets, carburetors and other engine components.
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Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may
contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing
methanol (wood alcohol) is NOT approved. ECHO brand Power Fuel™ is 93 octane, ethanol-free fuel
premixed with ECHO Red Armor® engine oil at 50:1 ratio. Use of ECHO Power Fuel™ is recommended to
extend engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines.
Two Stroke Mixture Oil - A 2-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD
standards must be used. Shindaiwa Red ArmorTM 2-Stroke Oil is strongly recommended as it meets this
standard and is specifically formulated for use in all Shindaiwa 2-stroke engines. Engine problems due to
inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345-FD
certified oil will void the engine warranty.
Shindaiwa Red ArmorTM engine oil may be mixed at 50:1 ratio for application in all Shindaiwa engines sold in
the past, regardless of ratio specified in those manuals.
Handling Fuel
Fuel is VERY flammable. Use extreme care when mixing, storing or handling, or serious personal
injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow flames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to
equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
• DO NOT overfill fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is
repaired.
• Move at least 3 m (10 ft.) from refueling location before starting the engine.
Mixing Instructions
1. Fill an approved fuel container with half of the required
amount of gasoline.
2. Add the proper amount of engine oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Add remaining gasoline, close fuel container, and remix.
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Spilled fuel is a leading cause of hydrocarbon emissions. Some states may require the use of automatic fuel
shut-off containers to reduce fuel spillage.
After use
• DO NOT store a unit with fuel in its tank. Leaks can occur. Return unused fuel to an approved fuel storage
container.
Storage - Fuel storage laws vary by locality. Contact your local government for the laws affecting your area.
As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building,
away from sparks and flames.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a
fuel stabilizer is added.
Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use.
Chain Lubricant
Note: Cap indication - Fuel/oil tanks are indicated by the following illustrations
Proper lubrication of the chain while in operation reduces
friction between the chain and the guide bar to a minimum
and assures a longer service life.
• Use bar and chain oil of high quality for this purpose.
• Do not use used or reclaimed oil to avoid various oiler
problems.
• Use high quality bar and chain oil.
• Use bar and chain oil of the following grades:
• SAE No. 30....in summer
Fuel tank cap
Oil tank cap
• SAE No. 10....in winter or when cutting resinous trees.
• When refueling, also refill chain oil.
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects
away from all openings. Always stop engine, disconnect spark plug, and make sure all moving parts
have come to a complete stop before removing obstructions, clearing debris, or servicing unit.
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause
unconsciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit
so that exhaust is directed away from your face and body.
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Operation of this equipment may create sparks that can start fires. This unit is equipped with a spark
arrestor to prevent discharge of hot particles from the engine. Metal cutters can also create sparks if
the cutter strikes rocks, metal, or other hard objects. Contact local fire authorities for laws or
regulations regarding fire prevention requirements.
Winter Operation
Air cleaner cover - Use the winter plug (A) to prevent carburetor
trouble in winter.
• Remove air cleaner cover. Remove plug from warm weather
position (B), and install into cold weather position (C).
A
B
Note: For operation at normal temperature (5° C [41° F]) return
the plug to its original position. To prevent over heating of
the engine.
Starting Cold Engine
C
For more information
scan this QR code.
Make sure the bar and chain are free from any obstruction
when starting the chain saw.
Chain brake
1. Move chain brake lever fully FORWARD to LOCK chain brake
before starting.
2. Fill the fuel tank with fuel mixture. Do not over fill.
3. Fill the chain oil tank with lubricant. Do not over fill.
A
4. Move ignition switch (A) UP to “RUN” position.
5. Push purge pump (B) 3 to 4 times or until fuel is visible in
purge pump.
6. Pull choke control knob all the way OUT (CLOSED [
choke position).
]
B
• After choke control knob is pulled and then knob is
returned to original position, throttle remains slightly open
(fast idle latch condition).
• The chain will attempt to move when engine is started with
fast idle throttle latch engaged.
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• Do not start engine before chain brake is locked.
7. Securely hold the chain saw and pull starter handle several
times until first starting sound.
8. Push choke control knob all the way IN (OPEN
position).
choke
9. Pull starter handle to start the engine.
Note: Do not pull starter rope out to the maximum possible
position.
Do not allow recoil handle to snap back against the
casing.
• After starting the engine, immediately squeeze and then release throttle trigger to release fast idle
throttle latch, otherwise severe brake damage may occur.
• Never use fast idle throttle latch for cutting.
• Use the fast idle throttle latch only in starting.
Note: If engine does not start after 5 pulls, repeat instructions.
Note: Do not increase engine speed while chain brake is locked.
Severe brake damage will result.
Starting Warm Engine
Make sure the bar and chain are free from any obstruction
when starting the chain saw.
Chain brake
1. Move chain brake lever fully FORWARD to LOCK chain brake
before starting.
2. Confirm there is fuel and chain oil in the tanks.
3. Move ignition switch UP to “RUN” position.
4. Securely hold the chain saw as shown and pull starter
handle.
5. Choke may be used if necessary, but after first starting
sound, squeeze throttle trigger to release choke and return
engine to idle.
Note: If engine does not start after 5 pulls, use cold start
procedure.
Note: Do not increase engine speed while chain brake is locked.
Severe brake damage will result.
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Running
Unlock Chain brake
The saw chain should not move at idle, otherwise serious
personal injury may result.
Note: If saw chain moves adjust carburetor according to
“Carburetor Adjustment” instructions in this manual, or see
your dealer.
1. After engine starts, allow it to return to idle and warm up
before using.
2. Move chain brake lever fully REARWARD to UNLOCK chain
brake.
3. Squeeze throttle trigger (B) gradually and increase engine
speed.
A
4. The chain starts running when the engine reaches clutch
engagement speed (see technical data page).
5. Confirm proper acceleration and lubrication of chain and bar.
(Non-adjustable automatic oil pump)
6. Do not run the engine at high speed unnecessarily.
B
7. Be sure that saw chain stops moving when throttle trigger is
released.
Stopping
1. Release throttle trigger and allow engine to idle.
2. Move ignition switch (A) DOWN to “STOP” position.
Note: If engine does not stop, pull choke control knob OUT fully to stop engine.
Return the unit to your authorized dealer to check and repair stop switch before starting the engine
again.
Checking Chain Tension
Chain tension should be checked frequently during work and
corrected as necessary.
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Do not operate with a loose chain.
Chain Lubrication Test
Hold the chain just above a dry surface and open the throttle to
half speed for 30 seconds.
A thin line of “thrown” oil should be seen on the dry surface.
Cutting Instructions
General
For more information on
scan this QR code.
• This chain saw is designed for cutting wood. Do not cut
metal, plastic or any non-wood material.
• Read the “CHAIN SAW SAFETY MANUAL” included with
your chain saw for additional cutting and safety
instructions.
• Wear suitable hearing protection such as earmuffs or
earplugs to protect against objectionable or
uncomfortable loud noises.
• Do not let the tip of the bar touch anything while the
engine is running. At cutting speed the chain is moving
at a high rate of speed. Should the tip contact a limb or
log while the chain is moving, the tip will be pushed
upward with considerable force. This is known as
kickback. Avoid it!
In all circumstances the operation of the chain saw is a
one-man job. It is difficult at times to take care for your own
safety, so don’t assume the responsibility for a helper as well.
After you have learned the basic techniques of using the saw,
your best aid will be your own good common sense.
Kickback
The accepted way to hold the saw is to stand to the left of the
saw with your left hand on the front handlebar and your right
hand on the rear handle so you can operate the throttle trigger
with your right index finger. Before attempting to fell a tree, cut
some small logs or limbs. Become thoroughly familiar with the
controls and the responses of the saw.
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OPERATION
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Start the engine, see that it is running properly. Squeeze the
trigger to open the throttle wide open and start the cut. If the
chain is properly sharpened, the cutting should be relatively
effortless. It is not necessary to press down hard to make the
saw cut. Pushing the saw too hard will slow the engine and
cutting will actually be more difficult.
Sap from palm trees may corrode metal parts unless proper
saw maintenance is performed. Make sure to clean metal parts
from palm sap immediately after use.
• Remove sprocket cover. Clean wood chips and sawdust from cover and engine crankcase.
• Never use metal tools for cleaning which may scratch the metal paint and allow corrosion to develop.
• Clean sap accumulation from metal parts with cloth and warm water with soap.
• Rinse with clean water and dry metal surfaces.
• Apply a light coating of engine or bar and chain oil metal parts after they are cleaned.
• Install and properly tension guide bar and chain. Run engine for one minute alternating engine speed
between full throttle for 5 seconds and idle for 5 seconds to coat metal parts with additional protective
chain oil.
• "Do not run a chainsaw not under cutting load at wide open throttle longer than 5 seconds or engine
damage may occur.
• "Keep chain properly tensioned during operation to prevent the chain from jumping out of the guide bar rail
slot and damaging metal engine parts
Felling The Tree
A falling tree can seriously damage anything it may hit - a
car, a house, a fence, a power line, or another tree. There
are ways to make a tree fall where you want it, so first
decide where that is!
For more information on
scan this QR code.
3 m (10 feet)
Direction of fall
Retreat
45°
Before cutting, clear the area around the tree. You will need
good footing while working and you should be able to work the
saw without hitting any obstacles. Next, select a path of retreat.
When the tree begins to fall you should retreat away from the
direction of fall at a 45-degree angle and at least 3 m (10 feet)
from the trunk to avoid the trunk kicking back over the stump.
24
45°
Retreat
Not this way
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Begin the cut on the side to which the tree is to fall. Cut a notch
about 1/3 of the way into the tree. The position of this notch is
important since the tree will try to fall “into” the notch. The
felling cut is made on the side opposite the notch and at a level
about 5 cm (2 in.) above the bottom of the notch. Do not try to
cut through to the notch with the felling cut. The remaining
wood between the notch cut and felling cut about 5 cm (2 in.)
will act as a hinge when the tree falls, guiding it in the desired
direction. When the tree starts to fall, kill the engine, place the
saw on the ground and make your retreat quickly.
OPERATION
Direction of fall
Hinge
5 cm (2 in.)
First cut
Felling cut
Notch
Second cut
5 cm (2 in.)
One-third tree diameter
To fell big trees with a diameter exceeding twice the bar length,
start the notching cuts from one side and draw the saw through
to the other side of the notch. Start the back cut on one side of
the tree, pivoting the saw through to form the desired hinge on
that side. Then remove the saw for the second cut. Insert the
saw in the first cut, very carefully so as not to cause kickback.
The final cut is made by drawing the saw forward in the cut to
reach the hinge.
3
1
2
Limbing
Limbing a fallen tree is much the same as bucking. Never stand
on the tree that you are limbing. When limbing, caution is the
word. Be careful of the tip touching other limbs. Always use
both hands.
Don’t cut with the saw overhead or aligned vertically with your
body. If the saw should kickback, you may not have enough
control to prevent possible injury.
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OPERATION
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Bucking
Bucking is the sawing of a log or fallen tree into smaller pieces.
There are a few basic rules which apply to all bucking
operations.
Uphill position
• Keep both hands on the handles at all times.
• Support logs if possible.
• When cutting on a slope or hillside, always stand uphill.
Finish cut
Keep in mind that the wood is heavy and that it will bend and
pinch the saw if improperly supported. The trunk will weaken at
the point where you make the cut unless the tree is lying on
perfectly flat ground or supported as shown. If you make the
cut with the tree on the ground, don’t let the saw’s chain dig into
the earth; it is harmful for the saw, and you stand a good
chance of being struck by flying debris.
First cut
Support
To cut the trunk, use the bucking and two-cut sequence shown.
The first cut should be no deeper than one-third the trunk
diameter.
When the bar nose hits another tree, etc.
Chain And Guide Bar Combination
The following combinations are recommended for model 305s.
Guide Bar
Length mm (in.)
Shindaiwa Part No.
Low-kickback
Saw Chain
Pitch mm (in.)
Type
Links
305 (12)
S12A0CD3745
9.53 (3/8)
S91PX
45
356 (14)
S14A0CD3752
9.53 (3/8)
S91PX
52
406 (16)
S16A0CD3757
9.53 (3/8)
S91PX
57
Use of replacement saw chain and/or guide bar other than that specified, or operation without the
“tip guard” in place, may cause severe kickback resulting in serious injury.Only use saw chain
designated as, “LOW-KICKBACK,” that meets ANSI B175.1 or CSA Z62.1, .3 Standard when tested
on the representative sample of chain saws below 3.8 C.I.D., and guide bar specified.
Chain and guide bar gauge size must be identical. Use Bar/Chain combinations shown in table above.
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If your tip guard is damaged or lost, contact your Shindaiwa dealer for a replacement. For the name of the
Shindaiwa dealer nearest you, Call: 1-877-986-7783 or on the web at www.shindaiwa-usa.com.
Refer to your Chain Saw Safety Manual for tip guard application information.
Guide Bar
(Low-kickback)
Replacement guide bars.
The following guide bars may be considered to have equivalent kickback energy.
• Sprocket nose guide bars of the same length and nose radius, same pitch and having the same number of
teeth.
• Hard nose guide bars of the same length and nose radius as a sprocket nose bar.
Saw Chain
(Low-kickback)
Do not use replacement saw chain unless it has been designated as meeting ANSI B175.1 or CSA
Z62.1, .3 kickback performance requirements, when tested on the representative sample of chain
saws below 3.8 c.i.d. specified in ANSI B175.1 or CSA 62.1, .3.
Note: LOW KICKBACK SAW CHAIN meets the kickback performance requirements of ANSI B175.1 or CSA
62.1, .3 (safety requirements for gasoline-powered chain saws).
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MAINTENANCE
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects
away from all openings. Always stop engine, disconnect spark plug, and make sure all moving parts
have come to a complete stop before removing obstructions, clearing debris, or servicing unit.
Allow unit to cool before performing service. Wear gloves to protect hands from sharp edges and
hot surfaces.
Your SHINDAIWA unit is designed to provide many hours of trouble free service. Regular scheduled maintenance
will help your unit achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want
to take your unit to an SHINDAIWA Service Dealer for maintenance. To help you decide whether you want to
DO-IT-YOURSELF or have the SHINDAIWA Dealer do it, each maintenance task has been graded. If the task is
not listed, see your SHINDAIWA Dealer for repairs.
Skill Levels
Level 1 = Easy to do. Common tools may be required.
Level 2 = Moderate difficulty. Some specialized tools may be required.
Maintenance Intervals
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
DAILY OR
BEFORE
USE
EVERY
REFUEL
3
MONTHS
OR 90
HOURS
YEARLY
600
HOURS
Air Filter
Inspect/Clean
1
I/C*
R*
Automatic Oiler
Inspect/Adjust
1
I
Oil Filter
Inspect/Replace
1
I
Fuel System
Inspect/Replace
1
I (1) *
Fuel Filter
Inspect/Replace
1
I*
I/R*
Fuel Cap Gasket
Replace
1
I*
R*
Guide Bar & Sprocket Nose
Inspect/Clean/Lubricate
1
I/C*
Saw Chain
Inspect/Sharpen/Replace/
Tensioning
2
I*
Sprocket
Inspect/Replace
2
I*
Spark Plug
Inspect/Clean
1
Cooling System
Inspect/Clean
2
Muffler Spark Arrestor
Inspect/Clean/Replace
2
I/C/R*
Cylinder Exhaust Port
Inspect/Clean/Decarbon
2
I/C
Recoil Starter Rope
Inspect/Clean
1
I/C*
Screws/Nuts/Bolts
Inspect/Tighten/Replace
1
I*
I/C*
I (1) *
I
I/C/R*
I/C
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the frequency of required
maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
* Replacement is recommended based on the finding of damage or wear during inspection.
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T
Carburetor Adjustment
Every unit is run at the factory and the carburetor is set in
compliance with Emission Regulations. In addition, the
carburetor is equipped with “H” (High Speed) and “L” (Low
Speed) needle adjustment limiters that prevent settings
outside acceptable limits.
L
H
Engine Break-In
New engines must be operated a minimum duration of two
tanks of fuel break-in before carburetor adjustments can be
made. During the break-in period your engine performance
will increase and exhaust emissions will stabilize. Idle speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability
performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and
emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized service
dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when
operating the engine below 1,100 feet ASL, otherwise severe engine damage may result.
1. Before adjusting carburetor clean or replace air filter and muffler “Spark Arrestor Screen”.
2. Make sure the bar and chain are properly adjusted.
3. Start engine and run several minutes to bring to operating temperature. Flash choke twice during
warm-up to clear any air from the fuel system.
4. Stop engine. Turn “H” speed needle counterclockwise (CCW) to stop. Turn “L” speed needle midway
between full clockwise (CW) stop and CCW stop.
5. Idle Speed Adjustment:
• Start engine, turn “Idle” speed adjustment screw “T” CW until the saw chain begins to move, then turn
screw out CCW until the saw chain stops moving. Turn screw out, CCW, an additional 1/4 turn.
When carburetor adjustment is completed, the saw chain should not move at idle, otherwise
serious personal injury may result.
6. Accelerate to full throttle for 2 - 3 seconds to clear any excess fuel in the engine, then return to idle.
Accelerate engine to full throttle to check for smooth transition from idle to high speed. If engine hesitates
turn “L” needle CCW 1/8 turn and repeat acceleration. Continue adjustment until smooth acceleration
results.
7. Check idle speed and reset if necessary as described in item 5. If a tachometer is available idle speed
should be set to value listed on technical data page.
When starting, idling adjustment speed should be adjusted to prevent the saw chain from moving.
When you experience trouble with the carburetor, contact your dealer.
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Air Filter
A
1. Check before every use.
2. CLOSE choke (
).
3. Press hand guard FORWARD and LOCK chain brake.
4. Release the cylinder cover latches (C) and remove
cylinder cover (A) and air filter (B).
5. Lightly brush dust off air filter, or clean with
compressed air, or replace the air filter.
C
B
6. Install air filter and cylinder cover, engage latches.
Spark Plug
• Check periodically.
• The standard spark gap is 0.65 mm (0.026 in.).
• Fastening torque: 13 - 17 N•m (110 - 150 in•lbf).
0.65 mm (0.026 in.)
1. Remove cylinder cover and remove spark plug.
2. Correct the spark gap if it is wider or narrower than the standard gap.
Check Fuel System
• Check before every use.
• After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap.
• In case of fuel leakage there is a danger of fire. Stop using the machine immediately and request your
dealer to inspect or replace.
Fuel Filter
• Check periodically.
• Do not allow dust to enter fuel tank.
• A clogged filter (A) will cause difficulty in starting engine
or abnormalities in engine performance.
1. Using a wire bent into the shape of a hook, pull filter
out through gas port, and inspect filter.
A
2. When the filter is dirty, replace it.
3. When the inside of the fuel tank is dirty, rinse the tank out with gasoline to clean it.
Note: Federal EPA regulations require all model year 2012 and later gasoline powered engines produced for
sale in the United States to be equipped with a special low permeation fuel supply hose between the
carburetor and fuel tank. When servicing model year 2012 and later equipment, only fuel supply
hoses certified by EPA can be used to replace the original equipment supply hose. Fines up to
$37,500 may be enforced for using an un-certified replacement part.
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Oil Filter
• Check periodically.
• Do not allow dust to enter into oil tank.
• A clogged oil filter (B) will affect the normal lubricating
system.
1. Using a wire bent into the shape of a hook, pull filter
out through oil port, and inspect filter.
B
2. If the filter is dirty, wash it in gasoline or replace it.
3. When the inside of the tank gets dirty, rinse the tank
out with gasoline to clean it.
Guide Bar
1. Clean before using.
2. Clean the groove (A) of the guide bar with a small
screwdriver.
A
3. Clean oil holes (B) with a wire.
4. Invert guide bar periodically.
B
5. Clean the bar mount area before installing of the bar.
Sprocket
• A damaged sprocket will cause premature damage or
wear of saw chain.
Worn: 0.5 mm (0.020 in.)
• When the sprocket has worn 0.5 mm (0.020 in.) or
more, replace it.
• Check sprocket when you install new chain. Replace it if
worn.
Some tree sap and resins are corrosive. Thoroughly wash the guide bar and sprocket areas after each use,
then coat metal parts with light oil.
Cooling System Cleaning
Cylinder fins
• Check periodically.
• Clogged fins will result in poor engine cooling.
1. Remove cylinder cover and starter.
2. Use compressed air or wooden tool to remove dirt and dust
from between fins to let cooling air pass easily.
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Spark Arrestor Muffler
• The spark arrestor muffler controls the exhaust noise and prevents hot, glowing particles of carbon from
leaving the muffler.
• Make sure the spark arrestor screen is in good repair and properly seated in the muffler.
• Certain internal combustion engines operated on forest, brush, and/or grass-covered areas in the states of
Washington, Oregon, Idaho, California, Minnesota, New Jersey and Maine, are required to be equipped
with a spark arrestor.
This requirement also applies to all U.S. Forest Service lands. In some of these areas, the spark arrestor
system must be certified per USDA Forest Service Regulation SAE J335.
Check with your local or state authorities for specific regulations in your area. Failure to follow these
requirements is a violation of the law.
Spark Arrestor Screen
Carbon deposits in muffler will cause drop in engine output and
overheating. Spark arrestor screen must be checked
periodically.
A
B
C
1. Remove air cleaner cover and remove spark plug lead.
2. Remove spark arrestor cover (C) and screen (B) from
muffler (A) body.
3. Clean carbon deposits from muffler components.
4. Replace screen if it is cracked, or has holes burned through.
5. Assemble components in reverse order.
Note: When cleaning carbon deposit, be careful not to damage the catalytic element inside muffler.
Exhaust Port Cleaning
Level 2.
Parts Required:
As needed: Muffler gasket
1. Remove cylinder cover and remove spark plug lead.
2. Place piston at top dead center.
3. Remove muffler. Check parts for wear or damage, and
replace if necessary.
4. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
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Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the exhaust
port. Do not allow carbon particles to enter the cylinder.
5. Install muffler. Tighten muffler mounting bolts (or nuts) to
7 - 9 N•m (60 - 80 in•lbf).
6. Install cylinder cover and attach spark plug lead.
7. Start engine, and allow unit to warm up at idle for several
minutes.
8. Stop engine, and re-tighten mounting bolts (or nuts) to
7 - 9 N•m (60 - 80 in•lbf).
9. Install guide bar and chain. Adjust chain tension.
10. Start engine and check for exhaust leaks between muffler and cylinder head. Stop engine if leak is found
and correct problem before operating chain saw.
Setting The Saw Chain
Preset tie strap
Drive link
Left hand cutter
Top plate
Tie strap
Side plate
Guard link
Depth gauge
Right hand cutter
For more information
scan this QR code.
Important points for proper maintenance of saw chain:
• Keep the cutters sharp at all times.
• Keep the left and the right cutters properly aligned.
• Note that blunt or irregular cutters will result in poor cutting
performance, increased vibration of chains and premature
breakage of the saw chain.
• Drive link serves to remove sawdust from the groove of the
guide bar. Keep the lower edge of the drive link sharp where
indicated.
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MAINTENANCE
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Setting Saw Chain
• For setting saw chain, round file (4.0 mm [5/32 in.] diam.) and
flat file are used.
30°
• Push file as shown.
Keep this angle
• To keep correct position and correct angle, use a file holder.
• Hold the file horizontally.
90°
• Place the depth gauge tool firmly on guide bar so that depth
gauge protrudes. Then file top of depth gauge with the flat file
until flat with top of the depth gauge tool.
1/5
• One fifth of the file diameter remains above cutter edge.
• Be sure to round off the front edge of the depth gauge.
Depth gauge tool
• Properly filed cutters are shown in illustration.
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MAINTENANCE
• When setting of the chain is finished, soak it in oil and wash
away filings completely before using.
55°
• When chain has been filed on the bar, supply sufficient oil to it,
move the chain slowly to wash away the filings before using
again.
• If the chain saw is operated with filings clogged in the groove,
30°
the saw chain and the guide bar will be damaged prematurely. Top plate filing angle
Side plate angle
• If the saw chain becomes soiled with resin, for instance, clean
it with kerosene and soak in it oil.
0.64 mm (0.025 in.)
To sharpen other chains, follow chain manufacturer’s
instructions.
Parallel
Depth gauge
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TROUBLESHOOTING
305S
TROUBLESHOOTING
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem
Check
Fuel at carburetor
Status
No fuel at carburetor
No fuel at cylinder
Cause
•Fuel strainer clogged
•Fuel line clogged
•Carburetor
Muffler wet with fuel
Spark at end of
plug wire
Engine runs, 
but dies or 
does not
accelerate
properly
Engine does
not crank
No spark
•Clean or replace
•Clean or replace
•See your SHINDAIWA
dealer
Carburetor
See your SHINDAIWA
dealer
Fuel Mixture too rich
•Open choke 
•Clean/replace air filter
•Adjust carburetor 
•See your SHINDAIWA
dealer
Fuel at cylinder
Engine cranks starts hard/ 
doesn’t start
Remedy
•Stop switch OFF 
•Electrical problem

•Interlock switch
•Turn switch to ON 
•See your SHINDAIWA
dealer 
•See your SHINDAIWA
dealer
•Adjust to .65mm (0.026 in.)
•Clean or replace 
•Clean or replace 
•Replace plug
Spark at plug
No spark
•Spark gap incorrect
•Covered with carbon 
•Fouled with fuel
•Plug defective
Air filter
Air filter dirty
Normal wear
Clean or replace
Fuel filter
Fuel filter dirty
Contaminants/residues
in fuel
Replace
Fuel vent
Fuel vent plugged
Contaminants/residues
in fuel
Clean or replace
Spark Plug
Plug dirty/worn
Normal wear
Clean and adjust or replace
Carburetor
Improper adjustment
Vibration
Adjust
Cooling System
Cooling system
dirty/plugged
Extended operation in
dirty/dusty locations
Clean
Spark Arrestor
Screen
Spark arrestor screen
plugged
Normal wear
Replace
N/A
N/A
Internal engine problem
See your SHINDAIWA
dealer
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition
spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may
result.
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STORAGE
STORAGE
Storage After Use
• Inspect and adjust every part of the chain saw.
• Completely clean every part and repair if necessary.
• Apply thin coating of oil on metal parts to prevent rust.
• Remove chain and guide bar.
• Drain fuel tank completely. Press purge bulb 6 - 7 times to remove remaining fuel from carburetor then drain
the tank again. Close choke, start and run the engine until it stops due to lack of fuel.
• Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.) of fresh, clean, two-stroke engine
oil into the cylinder through the spark plug hole.
• Store in a dry area, free from dust.
Do not store in an enclosure where fuel fumes may accumulate or reach an open flame or spark.
Do not lend or rent your chain saw without the Instruction manual and Safety manual.
Note:
• For future reference, you should keep this Instruction manual and the Safety manual.
• If this Instruction manual or the Safety manual has become illegible or is lost, please contact your
Shindaiwa dealer, or go to www.shindaiwa-usa.com.
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TECHNICAL DATA
305S
TECHNICAL DATA
Model
305s
Length
396 mm (15.6 in.)
Width
232 mm (9.1 in.)
Height
273 mm (10.7 in.)
Dry weight
4.0 kg (8.8 lb.) Without chain and guide bar
Engine
Air-cooled two-stroke single cylinder
Displacement
30.5 mL (1.861 cu. in.)
Bore
36.0 mm (1.417 in.)
Stroke
30.0 mm (1.181 in.)
Compressions ratio
6.7:1
Carburetor
Diaphragm type
Spark plug
NGK BPMR8Y (Gap 0.65 mm [0.026 in.])
Fuel tank capacity
250 mL (8.45 US. fl. oz.)
Fuel
50 : 1 ratio with Shindaiwa Red Armor® ISO-L-EGD (ISO/CD 13738) and JASO
M345-FD two-stroke, air-cooled engine oil.
Gasoline
Use 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10%
ethyl alcohol or 15% MTBE. Do not use alternative fuels such as E-15 or E-85.
Oiling system
Adjustable automatic oiler
Chain oil capacity
260 mL (8.8 US. fl. oz.)
Starter system
Automatic rewind starter
Clutch
Centrifugal type
Sprocket type
Spur type, 6-tooth, 3/8 in. pitch
Chain brake
Automatic band brake type
Idle speed
3,200 RPM
Clutch engagement speed
4,200 RPM
Wide open throttle speed
(W.O.T.)
12,500 RPM
Chain tensioner
Side access system
Guide bar
14 in
Saw chain
S91PX
Standard features
Front hand guard, Rear hand guard, Anti-vibration device, Throttle control lockout,
Chain catcher, Spark arrestor muffler, Tip guard, (Spiked bumper; Option)
This spark ignition system complies with the Canadian standard ICES-002.
* Technical data subject to change without notice.
38
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WARRANTY STATEMENTS
WARRANTY STATEMENTS
SHINDAIWA LIMITED WARRANTY STATEMENT FOR
PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2015
ECHO, INC’S RESPONSIBILITY
ECHO Incorporated’s (ECHO, INC.) Limited Warranty, provides to the original purchaser that this Shindaiwa product is free from
defects in material and workmanship. Under normal use and maintenance from date of purchase, ECHO, INC. agrees to repair
or replace at it’s discretion, any defective product free of charge at any authorized Shindaiwa servicing dealer within listed below
application time periods, limitations and exclusions. THIS LIMITED WARRANTY IS ONLY APPLICABLE TO SHINDAIWA PRODUCTS SOLD BY AUTHORIZED SHINDAIWA DEALERS. IT IS EXTENDED TO THE ORIGINAL PURCHASER ONLY, AND IS
NOT TRANSFERABLE TO SUBSEQUENT OWNERS EXCEPT FOR EMISSION RELATED PARTS. Repair parts and accessories replaced under this warranty are warranted only for the balance of the original unit or accessory warranty period. Any damage caused by improper installation or improper maintenance is not covered by this warranty. All parts or products replaced under
warranty become the property of ECHO, INC. This warranty is separate from the Emission control warranty statement supplied with
your new product. Please consult the Emission Control Warranty Statement for details regarding emission related parts. For a list
of Authorized Shindaiwa Dealers refer to WWW.SHINDAIWA.COM or call 1-877-986-7783.
OWNER’S RESPONSIBILITY
To ensure trouble free warranty coverage it is important that you register your Shindaiwa equipment on-line at WWW.SHINDAIWA.
COM RUE\¿OOLQJRXWWKHZDUUDQW\UHJLVWUDWLRQFDUGVXSSOLHGZLWK\RXUXQLW5HJLVWHULQJ\RXUSURGXFWFRQ¿UPV\RXUZDUUDQW\FRYHUDJHDQGSURYLGHVDGLUHFWOLQNLIZH¿QGLWQHFHVVDU\WRFRQWDFW\RX
The owner shall demonstrate reasonable care and use, and follow preventative maintenance, storage, fuel and oil usage as preVFULEHGLQWKHRSHUDWRU¶VPDQXDO6KRXOGDSURGXFWGLI¿FXOW\RFFXU\RXPXVWDW\RXUH[SHQVHGHOLYHURUVKLS\RXU6KLQGDLZDXQLW
to an authorized Shindaiwa servicing dealer for warranty repairs (within the applicable warranty period), and arrange for pick-up
or return of your unit after the repairs have been made. For your nearest authorized Shindaiwa servicing dealer, call Shindaiwa’s
Dealer Referral Center, at 1-877-986-7783 or you can locate a Shindaiwa servicing dealer at WWW.SHINDAIWA.COM. Should you
require assistance or have questions concerning Shindaiwa’s Warranty Statement, you can contact our Consumer Product Support
Department at 1-800-673-1558 or contact us through the web at WWW.SHINDAIWA.COM.
PRODUCT WARRANTY PERIOD
HOMEOWNER APPLICATION
• 5 YEAR WARRANTY - Units for homeowner, or non-income producing use will be covered by this limited warranty for
¿YH\HDUVIURPGDWHRISXUFKDVH
EXCEPTIONS:
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the life* of the product on parts only.
• Cutting attachments such as, but not limited to, bars, chains, sprockets, tines, blades, PowerBroomTM, belts, and nylon
trimmer heads for homeowner or non-income producing use will be covered for failures due to defects in material or
workmanship for a period of 60 days from original product purchase date. Any misuse from contact with concrete,
rocks, or other structures is not covered by this warranty.
‡ 0XOWLSXUSRVH7RRO$WWDFKPHQWVFDUU\WKHVDPHZDUUDQW\GXUDWLRQDVWKHXQLWVWKH\DUHGHVLJQHGWR¿W
COMMERCIAL APPLICATION
• 1 YEAR WARRANTY - All Chain Saws for commercial, institutional, agricultural, industrial, or income producing use will be
covered by this limited warranty for 1 year from the date of purchase.
• 2 YEAR WARRANTY - All other units for commercial, institutional, agricultural, industrial, or income producing use will be covered by this limited warranty for two (2) years from the date of purchase.
EXCEPTIONS:
‡ )RUHQJLQHSRZHUHGSURGXFWVWKHHOHFWURQLFLJQLWLRQPRGXOHÀH[LEOHGULYHFDEOHVDQGVROLGGULYHVKDIWVDUHZDUUDQWHG
for the life* of the product on parts only.
• Cutting attachments such as, but not limited to, bars, chains, sprockets, tines, blades, PowerBroomTM, belts, and nylon
trimmer heads for commercial, institutional, agricultural, industrial, rental, or income producing will be covered for failures due to defects in material or workmanship for a period of 30 days from original product purchase date. Any misuse
from contact with concrete, rocks, or other structures is not covered by this warranty.
‡ 0XOWLSXUSRVH7RRO$WWDFKPHQWVFDUU\WKHVDPHZDUUDQW\GXUDWLRQDVWKHXQLWVWKH\DUHGHVLJQHGWR¿W
RENTAL APPLICATION - 90 DAYS WARRANTY
• Units for rental use will be covered against defects in material and workmanship for a period of 90 days from the date of purchase.
(&+2,1&¶VOLDELOLW\XQGHUWKH³/LIHWLPH´FRYHUDJHLVOLPLWHGWRIXUQLVKLQJSDUWVVSHFL¿HGXQGHUWKH352'8&7:DUUDQW\
PERIOD section of this warranty statement for “Life” free of charge for a period of ten (10) years after the date of the complete
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X7503274501
© 8/2015 ECHO Inc.
39
WARRANTY STATEMENTS
305S
PURCHASED REPAIR PARTS AND ACCESSORIES
• 90-day all applications
ATTENTION ENGINE POWERED PRODUCT OWNERS
This Shindaiwa engine powered product is a quality-engineered unit which has been manufactured to exact tolerances to provide
superior performance. To help ensure the performance of the unit, it is required to use engine oil which meets the ISO-L-EGD
Standard per ISO/CD 13738 and JASO M345/FD Standards. Shindaiwa Red ArmorTMLVDSUHPLXPHQJLQHRLOVSHFL¿FDOO\IRUPXlated to meet ISO-L-EGD (ISO/CD 13738) and JASO M345/FD Standards. The use of engine oils designed for other applications,
such as for outboard motors or lawnmowers can result in severe engine damage, and will void your engine limited warranty.
THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY:
• Lack of lubrication or engine failure, due to the use of engine oils that do not meet the ISO-L-EGD (ISO/CD 13738) and JASO
M345/FD Standards. Shindaiwa Red ArmorTM Engine Oil meets the ISO-L-EGD and JASO M345/FD Standard. Emission related
parts are covered for 5 years homeowner or 2 years commercial use regardless of two-stroke oil used, per the statement listed
in the EPA or California Emission Control Warranty Explanation.
• Damage caused by use of gasohol, containing methanol (wood alcohol), or gasoline containing less than 89 octane. Only use
gasoline which contains 89 octane or higher. Gasohol which contains a maximum 10% ethanol (grain alcohol) or 15% MTBE
(methyl/tertiary/butyl/ether) is also approved. The prescribed mixing ratio of gasoline to oil is listed on the Shindaiwa oil label and
covered in your operator’s manual.
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‡ 'DPDJHFDXVHGE\WDPSHULQJZLWKHQJLQHVSHHGJRYHUQRURUHPLVVLRQFRPSRQHQWVRUUXQQLQJHQJLQHVDERYHVSHFL¿HGDQG
recommended engine speeds as listed in your operator’s manual.
‡ 2SHUDWLRQRIWKHXQLWZLWKLPSURSHUO\PDLQWDLQHGUHPRYHGFXWWLQJVKLHOGRUUHPRYHGGDPDJHGDLU¿OWHU
• Damage caused by dirt, pressure or steam cleaning the unit, salt water, corrosion, rust, varnish, abrasives, and moisture.
‡ 'HIHFWVPDOIXQFWLRQVRUIDLOXUHVUHVXOWLQJIURPDEXVHPLVXVHQHJOHFWPRGL¿FDWLRQVDOWHUDWLRQVQRUPDOZHDULPSURSHUVHUYLFing, or use of unauthorized attachments.
• Incorrect storage procedures, stale fuel, including failure to provide or perform required maintenance services as prescribed in
the operator’s manual. Preventative maintenance as outlined in the operator’s manual is the customer’s responsibility.
• Failures due to improper set-up, pre-delivery service or repair service by anyone other than authorized Shindaiwa servicing
dealer during the warranty period.
• Certain parts and other items are not warranted, including but not limited to: lubricants, starter cords, and engine tune-ups.
• Use of spark plugs other than those meeting performance and durability requirements of the OEM spark plug listed in the Operator’s Manuals.
• Overheating or carbon scoring failures due to restricted, clogged exhaust port or combustion chamber, including damage to
spark arrester screen.
‡ $GMXVWPHQWVDIWHUWKH¿UVWWKLUW\GD\VDQGEH\RQGVXFKDVFDUEXUHWRUDGMXVWPHQWDQGWKURWWOHFDEOHDGMXVWPHQW
• Damage to gears or gear cases caused by contaminated grease or oil, use of incorrect type or viscosity of lubricants, and/or
failure to comply with recommended grease or oil change intervals.
‡ 'DPDJHFDXVHGE\SXPSRUVSUD\HUUXQQLQJGU\SXPSLQJRUVSUD\LQJFDXVWLFRUÀDPPDEOHPDWHULDOVRUODFNRIRUEURNHQ
strainers.
• Additional damage to parts or components due to continued use after operational problem or failure occurs. Should operational
problem or failure occur, the product should not be used, but delivered as is to an authorized Shindaiwa servicing dealer.
It is a dealer’s and/or customer’s responsibility to complete and return the warranty registration card supplied with your Shindaiwa
product or by visiting WWW.SHINDAIWA.COM. Your receipt of purchase including date, model and serial number must be maintained and presented to an authorized Shindaiwa servicing dealer for warranty service. Proof of purchase rests solely with the customer. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
6RPHVWDWHVGRQRWDOORZWKHH[FOXVLRQRUOLPLWDWLRQRILQFLGHQWDORUFRQVHTXHQWLDOGDPDJHVVR\RXPD\DOVRKDYHRWKHUVSHFL¿F
legal rights which vary from state to state. This limited warranty is given by ECHO Incorporated, 400 Oakwood Rd., Lake Zurich, IL
60047.
DISCLAIMER OF IMPLIED WARRANTIES
This limited warranty is in lieu of all other expressed or implied warranties, including any warranty of FITNESS FOR A PARTICULAR PURPOSE OR USE and any implied warranty of MERCHANTABILITY otherwise applicable to this product. ECHO, INC. and
LWVDI¿OLDWHGFRPSDQLHVVKDOOQRWEHOLDEOHIRUDQ\VSHFLDOLQFLGHQWDORUFRQVHTXHQWLDOGDPDJHLQFOXGLQJORVWSUR¿WV7KHUHDUHQR
ZDUUDQWLHVH[WHQGHGRWKHUWKDQDVSURYLGHGKHUHLQ7KLVOLPLWHGZDUUDQW\PD\EHPRGL¿HGRQO\E\(&+2,1&
X7561120400
8/15
40
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305S
PRODUCT REGISTRATION
PRODUCT REGISTRATION
Thank you for choosing Shindaiwa Power Equipment
Please go to http://www.shindaiwa-usa.com to register your new product on-line. It's FAST and EASY! NOTE: your
information will never be sold or misused by ECHO, Inc. Registering your purchase enables us to contact you in the
unlikely event of a service update or product recall, and verifies your ownership for warranty consideration.
If you do not have access to the Internet, you can complete the form below and mail to:
ECHO Inc., Product Registration, PO Box 1139, Lake Zurich IL 60047.
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NOTES
305S
NOTES
42
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SERVICING INFORMATION
SERVICING INFORMATION
Parts/Serial Number
Genuine SHINDAIWA Parts and Assemblies for your SHINDAIWA
products are available only from an Authorized SHINDAIWA Dealer.
When you do need to buy parts always have the Model Number
and Serial Number of the unit with you. You can find these numbers
on the engine housing. For future reference, write them in the space
provided below.
Model No. _________________ SN. ___________________

Service
Service of this product during the warranty period must be performed by an Authorized SHINDAIWA Service
Dealer. For the name and address of the Authorized SHINDAIWA Service Dealer nearest you, ask your
retailer or call: 1-877-986-7783. Dealer information is also available on WWW.SHINDAIWA-USA.COM.
When presenting your unit for Warranty service/repairs, proof of purchase is required.
Consumer Product Support
If you require assistance or have questions concerning the application, operation or maintenance of this
product you may call the SHINDAIWA Consumer Product Support Department at 1-877-986-7783 from 8:00
am to 5:00 pm (Central Standard Time) Monday through Friday. Before calling, please know the model and
serial number of your unit.
Product Registration
To ensure trouble free warranty coverage it is important that you register your SHINDAIWA equipment
on-line at WWW.SHINDAIWA-USA.COMor by filling out the product registration sheet included in this
manual. Registering your product confirms your warranty coverage and provides a direct link between you
and ECHO if we find it necessary to contact you.
Additional or Replacement Manuals
Replacement Operator and Parts Catalogs are available from your SHINDAIWA dealer or at
WWW.SHINDAIWA-USA.COM or by contacting the Consumer Product Support Department
(1-877-986-7783). Always check WWW.SHINDAIWA-USA.COM for updated information.
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43
ECHO, INCORPORATED
44
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com
C37113001001/C37113999999