Craftsman 316794990 Operator`s manual

Operator’s Manual
2-Cycle
GAS BACKPACK BLOWER
Model No. 316.794990
with
CAUTION: Before using this
product, read this manual and
follow all safety rules and operating instructions.
•
•
•
•
•
SAFETY
ASSEMBLY
OPERATION
MAINTENANCE
PARTS LIST
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.com/craftsman
9096-320601 date(12/04)
TABLE OF CONTENTS
Warranty
Page
2
Safety Rules
Pages 3 - 8
Troubleshooting
Page
16
Assembly
Page
Repair Parts
Page
18
Starting / Stopping instrustion
Pages 10 - 11
Operation
Page 12
Maintenance
9
Pages 13 - 15
WARRANTY STATEMENT
TWO YEAR LIMITED WARRANTY ON CRAFTSMAN GAS BACKPACK BLOWER
For two years from the date of purchase, when this Blower is used and maintained according to the
operator’s manual, Sears will repair any defect in material or workmanship free of charge.
This warranty excludes the spark plug and air filter, which are expendable parts that can wear out from
normal use in less than two years.
If this Blower is used for commercial or rental purposes, this warranty applies for only 30 days from
the date of purchase.
WARRANTY SERVICE IS AVAILABLE BY RETURNING THIS BLOWER TO THE NEAREST SEARS
STORE OR SEARS PARTS & REPAIR CENTER IN THE UNITED STATES.
This warranty gives you specific legal rights, and you may also have other rights which vary from state
to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
SPARK ARRESTOR NOTE
CALIFORNIA PROPOSITION 65 WARNING
NOTE: For users on U.S. Forest Land and in the
states of California, Maine, Oregon and Washington.
All U.S. Forest Land and the state of California (Public
Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained
in effective working order, or the engine be constructed,
equipped and maintained for the prevention of fire.
Check with your state or local authorities for regulations
pertaining to these requirements. Failure to follow these
requirements could subject you to liability or a fine. This
unit is factory equipped with a spark arrestor. If it
requires replacement, ask a Sears or other qualified service dealer to install the Spark Arrestor Kit.
WARNING
THE ENGINE EXHAUST FROM THIS
PRODUCT CONTAINS CHEMICALS
KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS OR
OTHER REPRODUCTIVE HARM.
2
RULES FOR SAFE OPERATION
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their
explanations, deserve your careful attention and understanding. The safety warnings do not by themselves
eliminate any danger. The instructions or warnings they
give are not substitutes for proper accident prevention
measures.
SYMBOL
SYMBOL
MEANING
Failure to obey a safety
warning will result in
serious injury to yourself or to others. Always
follow the safety precautions to reduce the
risk of fire, electric shock and personal injury.
DANGER:
MEANING
Indicates
danger,
warning or caution. Attention is required in
order to avoid serious personal injury. May
be used in conjunction with other symbols
or pictographs.
SAFETY ALERT:
Failure to obey a
safety warning can
result in injury to yourself and others.
Always follow the safety precautions to
reduce the risk of fire, electric shock and
personal injury.
NOTE: Advises you of information or instructions vital to
the operation or maintenance of the equipment.
Failure to obey a
safety warning may
result in property damage or personal injury
to yourself or to others. Always follow the
safety precautions to reduce the risk of fire,
electric shock and personal injury.
WARNING:
CAUTION:
Read the Operator’s Manual(s) and follow all warnings
and safety instructions.
Failure to do so can result in serious injury to the
operator and/or bystanders.
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS
BEFORE OPERATING
FUEL SAFETY WARNINGS
WARNING:
Gasoline is highly
flammable, and its
vapors can explode if ignited. Take the following precautions:
• Read the instructions carefully. Be familiar with the controls and proper use of the unit.
When using the unit,
you must follow the
safety rules. Please read these instructions
before operating the unit in order to ensure the
safety of the operator and any by standers.
Please keep these instructions for later use.
WARNING:
• Store fuel only in containers specifically designed and
approved for the storage of such material.
• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
• Always stop the engine and allow it to cool before
filling the fuel tank. Never remove the cap of the fuel
tank, or add fuel, when the engine is hot. Never
operate the unit without the fuel cap securely in place.
Loosen the fuel tank cap slowly to relieve any pressure
in the tank.
• Do not operate this unit when tired, ill, or under the
influence of alcohol, drugs, or medication.
• Children must not operate the unit. Teens must be
accompanied and guided by an adult.
• All guards and safety attachments must be installed
properly before operating the unit.
• Add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Slowly remove the fuel
cap only after stopping engine. Do not smoke while
fueling or mixing fuel. Wipe up any spilled fuel from the
unit immediately. Always wipe unit dry before using.
• Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace parts that are cracked,
chipped, or damaged in any way. Do not operate the
unit with loose or damaged parts.
• Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke. Keep sparks and open flames away from the
area while adding fuel or operating the unit.
• Carefully inspect the area before starting the unit.
Remove all debris and hard or sharp objects such as
glass, wire, etc.
• Clear the area of children, bystanders, and pets. At a
minimum, keep all children, bystanders, and pets outside a 50 feet (15 m.) radius; there still may be a risk to
bystanders from thrown objects. Bystanders should be
encouraged to wear eye protection. If you are
approached, stop the unit immediately.
3
RULES FOR SAFE OPERATION
• Do not operate the engine faster than the speed needed to do the job. Do not run the engine at high speed
when not in use.
WHILE OPERATING
• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill. Operate this
unit only in a well-ventilated outdoor area.
• Always stop the engine when operation is delayed or
when walking from one location to another.
• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1 standards and are marked as
such. Wear ear/hearing protection when operating this
unit.
• Stop the engine for maintenance, repair, to install or
remove the blower tubes attachments. The unit must
be stopped and the impeller no longer turning to avoid
contact with the rotating blades.
• Never run the unit without the the proper equipment
attached. When using this unit, always install the blower tubes depending on blower application.
• If you strike or come into contact with a foreign object,
stop the engine immediately and check for damage. Do
not operate before repairing damage. Do not operate
the unit with loose or damaged parts.
• To reduce the risk of hearing loss associated with
sound level(s), always wear ear/hearing protection
when operating this unit.
• Wear heavy long pants, boots, gloves, and a long
sleeve shirt. Do not wear loose clothing, jewelry, short
pants, sandals, or go barefoot. Secure hair above
shoulder level.
• Use only original equipment manufacturer replacement
parts when servicing this unit. These parts are available
from your authorized service dealer. Do not use unauthorized parts, accessories, or attachments for this
unit. Doing so could lead to serious injury to the user,
or damage to the unit, and void your
warranty.
• To avoid static electricity shock, do not wear rubber
gloves or any other insulated gloves while operating
this unit.
• Never use this unit for spreading chemicals, fertilizers or
other substances which may contain toxic
materials.
• Use the unit only in daylight or good artificial light.
• To reduce fire hazard, replace faulty muffler and spark
arrestor. Keep the engine and muffler free from grass,
leaves, excessive grease or carbon build up.
• Keep outside surfaces free from oil and fuel.
• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and
unit must be in a stable position while starting. Refer to
Starting/Stopping Instructions.
• Turn the engine off and disconnect the spark plug for
maintenance of repair.
• Never point the blower or blowing debris in the direction of people, animals or in the direction of windows.
Always direct the blowing debris away from people,
animals, and windows. Use extra caution when blowing
debris near solid objects such as trees, automobiles,
walls, etc.
• Do not set unit on any surface except a clean, hard
area while engine is running. Debris such as gravel,
sand, dust, grass, etc. could be picked up by the air
intake and thrown out by the discharge opening, damaging unit, property, or causing serious injury to
bystanders or operator.
• Use the right tool. Only use this tool for its intended
purpose.
• Do not force unit. It will do the job better and with less
likelihood of injury at a rate for which it was designed.
• Do not overreach or use from unstable surfaces such
as ladders, trees, steep slopes, rooftops, etc. Always
keep proper footing and balance.
• Always hold the unit with a firm grip when operating.
• Keep hands, face, and feet away from all moving parts.
Do not touch or try to stop the impeller when it is rotating. Do not operate without guards in place.
• Do not put any object into openings. Do not use with
any opening blocked; keep free of dirt, debris, and anything that may reduce the air flow.
• Do not touch the engine or muffler. These parts get
extremely hot from operation, even after the unit is
turned off.
4
RULES FOR SAFE OPERATION
OTHER SAFETY WARNINGS
SPECIAL NOTE: Exposure to vibrations through prolonged use of gasoline powered hand tools could cause
blood vessel or nerve damage in the fingers, hands, and
joints of people prone to circulation disorders or abnormal
swelling. Prolonged use in cold weather has been linked
to blood vessel damage in otherwise healthy people. If
symptoms occur such as numbness, pain, loss of
strength, change in skin color or texture, or loss of feeling
in the fingers, hands or joints, discontinue use of this tool
and seek medical attention. An anti-vibration system does
not guarantee avoidance of these problems. Users who
operate power tools on a regular basis must closely
monitor their physical condition and the condition of this
tool.
• Always disconnect the spark plug before performing
maintenance or accessing movable parts.
• Never store the unit, with fuel in the tank, inside a building where fumes may reach an open flame (pilot lights,
etc.) or sparks (switches, electrical motors, etc.).
• Allow the engine to cool before storing or transporting.
Be sure to secure the unit while transporting.
• Store the unit in a dry place, secured, or at a height to
prevent unauthorized use or damage. Keep out of the
reach of children.
• Never douse or squirt the unit with water or any other
liquid. Keep handles dry, clean, and free from debris.
Clean after each use, see Cleaning and Storage
instructions.
SAVE THESE INSTRUCTIONS
• Keep these instructions. Refer to them often and use
them to instruct other users. If you loan this unit to others, also loan these instructions to them.
5
RULES FOR SAFE OPERATION
SAFETY AND INTERNATIONAL SYMBOLS
This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.
SYMBOL
SYMBOL
MEANING
MEANING
• ON/OFF CONTROL
• SAFETY ALERT SYMBOL
ON / START / RUN
Indicates danger, warning, or caution.
May be used in conjunction with
other symbols or pictographs.
• ON/OFF CONTROL
• READ OPERATOR'S MANUAL
OFF OR STOP
WARNING:
Read the
Operator’s Manual(s) and follow
all warnings and safety
instructions. Failure to do so can
result in serious injury to the
operator and/or bystanders.
• WEAR EYE, HEARING AND HARDHAT PROTECTION
WARNING:
Thrown
objects and loud noise can
cause severe eye injury and
hearing loss. Wear eye protection meeting ANSI Z87.1-1989
standards and ear protection
when operating this unit. Wear a
hard hat. Use a full face shield
when needed.
• MINIMUM OPERATING DISTANCE
• RED CHOKE LEVER POSITIONS
WARNING:
Keep
children, bystanders, and
1 • FULL Choke Position
animals 50 feet (15 meters)
away. If approached stop unit
immediately.
2 • PARTIAL Choke Position
3 • RUN Position
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
• OIL
Refer to operator's manual for the
proper type of oil.
6
RULES FOR SAFE OPERATION
KNOW YOUR BLOWER
4
22
5
23
3
2
21
6
7
1
8
9
10
20
11
12
19
13
18
14
17
16
24
15
BLOWER COMPONENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
THROTTLE TRIGGER
THROTTLE LOCK
ON/OFF IGNITION SWITCH
TOP ASSIST HANDLE
SPARK PLUG WIRE / SPARK PLUG
CHOKE LEVER
STARTER HANDLE
AIR CLEANER COVER
FUEL CAP
FUEL TANK
PRIMER BULB
HARNESS
CONTROL HANDLE
OPERATING TUBE
7
HOSE CLAMP
FLEX TUBE
THROTTLE LINKAGE
MUFFLER COVER
SPARK ARRESTER SCREEN
VENTED BACK PAD
INTERMEDIATE TUBE
56mm NOZZLE
45mm CONCENTRATOR NOZZLE
THROTTLE LINKAGE CLIPS
OIL AND FUEL INFORMATION
OIL AND FUEL MIXING INSTRUCTIONS
To Obtain Correct Fuel Mix:
Old and/or improperly mixed fuel are the main reasons
for the unit not running properly. Be sure to use fresh,
(less than 60 days old) clean unleaded fuel. Follow the
instructions carefully for the proper fuel/oil mixture.
Thoroughly mix the proper ratio of 2-cycle engine oil
with unleaded gasoline in a separate fuel can. Use a 40:1
fuel/oil ratio. Do not mix them directly in the engine fuel
tank. See the table below for specific gas and oil mixing
ratios.
Definition of Blended Fuels
NOTE: One gallon (3.8 liters) of unleaded gasoline mixed
with one 3.2 oz. (95 ml.) bottle of
2-cycle oil makes a 40:1 fuel/oil ratio.
Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol, or MTBE (ether).
Alcohol-blended fuel absorbs water. As little as 1% water
in the fuel can make fuel and oil separate and leads to
formation of acids during storage. When using alcoholblended fuel, use fresh fuel.
+
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable, follow recommended precautions:
• Always use the fresh fuel mix explained in your operator's manual
• Always agitate the fuel mix before fueling the unit
• Drain the tank and run the engine dry before storing the
unit
UNLEADED GAS
2 CYCLE OIL
1 GALLON US
(3.8 LITERS)
3.2 FL. OZ.
(95 ml)
1 LITER
25 ml
MIXING RATIO - 40:1
Using Fuel Additives
WARNING:
Gasoline is
extremely flammable. Ignited Vapors may explode. Always
stop the engine and allow it to cool before
filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames
at a distance from the area.
The bottle of 2-cycle oil that came with your unit contains
a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits. It is recommended
that you use our 2-cycle oil with this unit.
If unavailable, use a good 2-cycle oil designed for
air-cooled engines along with a fuel additive, such as
STA-BIL® Gas Stabilizer or an equivalent. Add 0.8 oz.
(23 ml.) of fuel additive per gallon of fuel according to the
instructions on the container. NEVER add fuel additives
directly to the unit's fuel tank.
WARNING:
Remove fuel cap
slowly to avoid injury
from fuel spray. Never operate the unit without
the fuel cap securely in place.
CAUTION:
For proper engine
operation and maximum reliability, pay strict attention to the
oil and fuel mixing instructions on the
2-cycle oil container. Using improperly
mixed fuel can severely damage the
engine.
WARNING:
Add fuel in a clean,
well ventilated outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for
spilled fuel. Do not start the engine until fuel
vapors dissipate.
NOTE: Dispose of the old fuel/oil mix in accordance to
Federal, State and Local regulations.
8
ASSEMBLY INSTRUCTIONS
ATTACH FLEX TUBE
Connect the flexible tube (B) to the fan’s outlet tube (A)
(Fig. 1) with a hose clamp (C) (Fig. 2) and tighten securely (Fig. 2).
B
D
F
B
180˚
A
E
Fig. 3
Fig. 1
G
Fig. 4
C
THROTTLE LINKAGE CLIPS
Fig. 2
ATTACH OPERATING TUBE
1. Place the unit on flat surface during assemble. Insure
screw mechanism of clamp is positioned away from
operator.
2. Turn the rotary ring mark(D) align the throttle handle
(F). Then insert the operating tube(E) into the flexible
tube (B) (Fig. 3) with a hose clamp (G)(Fig. 4) and
tighten securely.
Fig. 5
3. Attache throttle linkage clips (# 24-know your blower)to both ends of the flex tube. ( See Fig. 5 and Fig. 6)
THROTTLE LINKAGE CLIPS
Fig. 6
9
ASSEMBLY INSTRUCTIONS
ATTACH INTERMEDIATE TUBE AND CONCENTRATOR NOZZLE
ADJUST BACK PACK HARNESS AND
CONTROL HANDLE
1.
Connect the intermediate tube (H) and air nozzle (I). Push
the tubes together and turn them clockwise so that they
lock together. (Fig. 7)
B
D
H
2.
3.
I
Place blower on your back by slipping arms through
the shoulder straps as if you were putting on a jacket
(Figure 8).
Once adjustments have been made, to the straps for
user comfort, remove the blower from your back and
place on level ground in an upright position.
Adjust backpack harness and control handle.
45mm
56mm
Fig. 7
Fig. 8
STARTING/STOPPING INSTRUCTIONS
STARTING A COLD ENGINE (Above 55˚F)
Fill fuel tank with proper gas and oil mixture. See FUEL
AND LUBRICATION. Set unit upright on ground so that it
rests on the back pack frame.
1. Move on/off ignition switch (A) to the “RUN (I) ” position. (Figure 9)
2. Pump primer bulb10 X by pushing up on the bulb(D).
(Figure 11)
3. Your unit is designed with a 3 position choke: FULL
CHOKE “ ”, PARTIAL CHOKE “ ”, and RUN “ ”.
Move choke lever to FULL CHOKE “ ” position.
(Figure 10)(DO NOT PRESS THROTTLE LOCK OR
TRIGGER.)
4. With unit on the ground, hold top of blower-not engine
housing cover as it may be hot-step on bottom of
frame with foot. (Figure 12)
1
2
3
Fig. 10
C
D
A
Fig. 11
B
Fig. 9
10
STARTING/STOPPING INSTRUCTIONS
NOTE: The unit uses the INCREDI-PULL™ starting
system with MAX FIRE IGNITION™, which significantly reduces the effort required to start the engine.
You must pull the starter rope out far enough to hear
the engine attempt to start. There is no need to pull
the rope briskly--there is no harsh resistance when
pulling. Be aware that this starting method is vastly
different from (and much easier than) what you may
be used to.
5. Pull starter 4 to 6 times-when unit starts move choke
to position 3. If unit fails to start move choke to position 2 and pull 4-6 times until it starts. (Fig.13 & 14 )
6. Once engine starts move choke to position 3.
7. After unit starts apply 1/4 throttle slightly and slowly
then allow engine to warm up for 30 seconds.
8. Pull throttle to run.
NOTE: If engine fails to start after repeated attempts,
refer to Troubleshooting section.
NOTE: Always pull starter rope straight out. Pulling
starter at an angle will cause rope to rub against the eyelet. This friction will cause the rope to fray and wear more
quickly. Always hold starter handle when rope retracts.
Never allow rope to snap back from extended position.
This could cause rope to snag or fray and also damage
the starter assembly.
2.
engine), pull starter rope briskly.
If engine does not start, or starts and then stops
after 5 rope pulls, follow procedure “STARTING A
COLD ENGINE”.
Fig. 12
1
2
3
COLD STARTS (below 55˚F)
1.
2.
3.
4.
5.
6.
7.
8.
Fig. 13
Switch to “RUN (I)” position.
Prime 10 times.
Choke in position “ ”.
Do not press throttle lock or trigger.
Pull rope until engine starts should be 1-10 times.
Move choke to position “ ”.
After unit starts apply 1/4 throttle slightly and slowly
then allow engine to warm up for 30 seconds.
Press trigger to run.
1
2
3
IMPORTANT IDLING INFORMATION
Fig. 14
In some cases due to operating conditions (altitude, temperature etc.) your blower may need a slight adjustment
to the idle speed.
After warm up, If unit does not Idle after restarting 2
times, follow these steps to adjust idle.
1. Locate the idle adjustment screw (G) on the carburetor (Figure 15).
2. Using a Phillips or slotted screwdriver - turn screw
1/4 to 1/2 turn clockwise (to the right). Unit should
then idle properly.
G
STOPPING THE ENGINE
Fig. 15
Emergency Stopping Procedure. When it is necessary
to stop blower engine immediately, DEPRESS the OFF
“STOP ” switch (A) until the engine stops completely
(Figure 16).
Normal Stopping Method. For normal stopping, release
trigger and allow engine to return to idle speed. Then
DEPRESS the OFF “STOP ” switch (A) until the engine
stops completely. (Figure 16)
A
STARTING A WARM ENGINE (Engine has been
stopped for no more than 15-20 minutes).
1. Set throttle latch (see step 2 for starting a cold
11
Fig. 16
OPERATING INSTRUCTIONS
BLOWER OPERATIONS
OPERATION INSTRUCTIONS
1. Use the blower for trees, shrubs, flower beds, and
hard-to-clean areas.
2. Use the unit around buildings and for other normal
cleaning procedures.
3. Use the blower around walls, overhangs, fences,
and screens.
1.
2.
3.
WARNING:
Because of flying
debris, always wear
American National Standards Institute
approved shielded safety glasses or face
shield when operating blower.
4.
5.
WARNING:
Before using your
blower, review Safety
Precautions in your User Manual, and all regulations for operation of the unit. These precautions and regulations are for your protection.
Follow the instructions “STARTING A COLD
ENGINE”.
Once unit is running, place unit on your back by
slipping arms through the shoulder straps as if your
were putting on a jacket (Figure 17).
When preparing to clear an area of debris, always
position yourself so that you can control the direction debris will be blown .
The control handle (A, Fig. 16) and the flexibility of
the blower tube assembly will allow you to clear the
most hard-to-reach areas .
The hand grip, throttle trigger, throttle lock and ignition on/off switch (B) are all mounted on a swivel
handle that offers a wide range of operating positions and comfort (Figure 19).
CAUTION:
DO NOT operate the
blower with other
people or animals in the immediate vicinity.
Allow a minimum of 50 feet (15 meters)
between operator and other people or animals.
4. We recommend that a face mask be worn when
operating blower in dusty areas.
5. Stand away from the debris, at a distance that will
easily allow you to control the direction of blown
debris. Never blow debris in direction of bystanders.
6. To control velocity of airstream, blower can be
operated at any speed between idle and full throttle.
Experience with the unit will help you determine the
amount of airflow necessary for each application.
7. Operate power equipment only at reasonable
hours--not early in the morning or late at night when
people might be disturbed. Comply with times listed
in local ordinances.
8. To reduce sound levels, limit the number of pieces of
equipment used at any one time.
9. Operate power blowers at the lowest possible
throttle speed to do the job.
10. Check your equipment before operation, especially
the muffler, air intakes and air filters.
11. Use rakes and brooms to loosen debris before
blowing.In dusty conditions, slightly dampen
surfaces when water is available.
12. Conserve water by using power blowers instead of
hoses for many lawn and garden applications,
including areas such as gutters, screens, patios,
grills, porches and gardens.
13. Watch out for children, pets, open windows or
freshly washed cars, and blow debris safely away.
14. Use intermediate tube plus nozzle of your choice so
the airstream can work close to the ground.
15. After using blowers and other equipment, CLEAN
UP! Dispose of debris in trash receptacles.
Fig. 17
Fig. 18
12
Fig. 19
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
NOTE: Maintenance, replacement, or repair of the emission control devices and system may be perormed
by a Sears or other qualified service dealer.
Perform these required maintenance procedures at the frequency stated in the table. These procedures should also
be a part of any seasonal tune-up.
NOTE: Maintenance, replacement, or repair of the
emission control devices and system may only be
performed by a Sears or other qualified service
dealer.
To prevent serious
injury, never perform
maintenance or repairs with unit running.
Always service and repair a cool unit.
Disconnect the spark plug wire to ensure that
the unit cannot start.
WARNING:
A good preventive maintenance program of regular inspection and care will increase life and improve performance of your
chain saw. This maintenance checklist is a guide for such a program.
Cleaning, adjustment, and part replacement may be required, under certain conditions, at more frequent intervals than
those indicated.
CUSTOMER RESPONSIBILITY
AFTER
EACH USE
MAINTENANCE CHECKLIST
ITEM
BEFORE EACH USE
CHECK FOR LOOSE SCREWS/
NUTS/BOLTS
CLEAN OR REPLACE THE FILTER
REPLACE FUEL FILTER
REPLACE SPARK PLUG
INSPECT SPARK ARRESTER SCREEN
INSPECT FUEL HOSES
INSPECT VACUUM TUBES
13
HOURS OF
OPERATION
10
20
MAINTENANCE AND REPAIR INSTRUCTIONS
2. Pull filter (D) off with a twisting motion. (Figure 24)
3. Replace fuel filter (D). (Figure 24)
AIR FILTER
CAUTION:
NEVER operate blower without the air filter. The air filter must be kept clean. If it
becomes damaged, install a new filter.
NOTE: Never operate the blower without the fuel filter.
Internal engine damage could result!
A
To Clean Air Filter:
1. Loosen knob (A) holding air filter cover in place,
remove cover (B) and lift filter (C) from air box (Figure
20 & Figure 21).
2. Wash filter in soap and water. DO NOT USE GASOLINE!
3. Air dry filter.
4. Reinstall filter.
NOTE: Replace filter if frayed, torn, damaged or unable
to be cleaned.
Fig. 22
B
C
A
B
Fig. 20
Fig. 23
C
D
Fig. 21
Fig. 24
FUEL CAP / FUEL FILTER
CAUTION:
Remove fuel from unit
and store in approved
container before starting this procedure. Open
fuel cap slowly to release any pressure which
may have formed in fuel tank.
NOTE: Keep vent (A) on fuel cap clean of debris (Figure
22).
Fuel Filter:
1. Completely remove fuel cap from fuel tank (B) to be
able to remove fuel filter (C) from tank. Use a piece of
wire (C) with a hook formed at the end to pull filter
out of tank. (Figure 23)
IDLE ADJUSTMENT
The carburetor was pre-set at the factory for optimum
performance. If further adjustments are necessary take
your blower to a Sears or other qualified service dealer.
14
MAINTENANCE AND REPAIR INSTRUCTIONS
SPARK PLUG
STORAGE
1. To remove spark plug (B) (Fig. 26) for cleaning or
replacement: make sure engine is off, spark plug is
cool, then grasp spark plug boot firmly and remove
from spark plug. Remove spark plug with correct
spark plug tool. Inspect, clean or replace as needed.
2. Spark plug gap = .025" (.635mm) (Figure 25).
3. Torque to 105 to 130 inch pounds (12 to 15 N•m).
Connect spark plug boot.
4. If need replace spark plug with Champion RDJ8J or
equivalent.
Failure to follow these steps may cause varnish to form in
the carburetor which can cause difficult starting or permanent damage following storage.
1. Perform all the general maintenance recommended in
the Maintenance Section of your User Manual.
2. Clean exterior of engine and blower tubes.
3. Drain fuel from the fuel tank by running the unit dry or
by removing the fuel cap and tipping the motor housing/fuel tank over and draining oil/fuel mixture into a
container with the same 2-cycle fuel mixture.
4. After fuel is drained, start engine.
5. Run engine at idle until unit stops. This will purge the
carburetor of fuel.
6. Allow engine to cool (approx. 5 minutes).
7. Using a spark plug wrench, remove the spark plug.
8. Pour 1 teaspoon of clean 2-cycle oil into the
combustion chamber. Pull starter rope slowly several
times to coat internal components. Replace spark
plug.
9. Store unit in a cool, dry place away from any source
of ignition such as an oil burner, water heater, etc.
.025" (.635mm)
Spark
Plug
REMOVING A UNIT FROM STORAGE
Fig. 25
SPARK ARRESTOR SCREEN/
COLLAR ASSEMBLY
1. Remove spark plug.
2. Pull starter rope briskly to clear excess oil from combustion chamber.
3. Clean and gap spark plug or install a new spark plug
with proper gap. (Fig. 25)
4. Prepare unit for operation.
5. Fill fuel tank with proper fuel / oil mixture. See Fuel
and Lubrication Section.
1. To replace spark arrestor screen/collar assembly (A)
(Figure 26), use a needle nose pliers and pinch an
edge of the collar. Pull out the whole spark arrestor
screen assembly.
2. Use the needle nose pliers to push in a new spark
arrestor screen assembly by opening the pliers slightly to press the inner surface of the asembly securely
into place
B
A
Fig. 26
15
TROUBLESHOOTING
UNIT WON’T START OR STARTS BUT WILL NOT RUN
CAUSE
ACTION
1. Incorrect starting procedures
2. Incorrect carburetor mixture adjustment setting
1. Follow instructions in the Starting/Stopping section
2. Have carburetor adjusted by a Sears or other
qualified service dealer
3. Clean/gap or replace plug
4. Fill fuel tank with properly mixed fuel
5. Press primer bulb fully and slowly 10 times
3. Fouled spark plug
4. Empty fuel tank
5. Primer bulb was not pressed enough
UNIT STARTS, BUT ENGINE HAS LOW POWER
CAUSE
ACTION
1. Fuel filter is plugged
2. Incorrect lever position
3. Dirty spark arrestor screen
4. Dirty air filter
5. Incorrect carburetor mixture adjustment setting
service dealer
1.
2.
3.
4.
5.
Replace the fuel filter
Move to Position 3
Replace spark arrestor screen
Remove, clean and reinstall filter
Have carburetor adjusted by a Sears or other qualified
ENGINE HESITATES
CAUSE
ACTION
1. Incorrect carburetor mixture adjustment setting
1. Have carburetor adjusted by a Sears or other
qualified service dealer
2. Replace or clean the air filter
3. Drain gas tank/add fresh fuel mixture
2. Air filter is plugged
3. Old or improperly mixed fuel
NO POWER UNDER LOAD
CAUSE
ACTION
1. Incorrect carburetor mixture adjustment setting
1. Have carburetor adjusted by a Sears or other
qualified service dealer
2. Drain gas tank (see Storage)/add fresh fuel mixture
3. Replace or clean the air filter
4. Replace or clean the spark plug
2. Old or improperly mixed fuel
3. Air filter is plugged
4. Fouled spark plug
RUNS ERRATICALLY
CAUSE
ACTION
1. Incorrectly gapped spark plug
2. Plugged spark arrestor
3. Dirty air filter
1. Clean/gap or replace plug
2. Clean or replace spark arrestor
3. Clean or replace air filter
SMOKES EXCESSIVELY
C A U SE
ACTION
1. Incorrect carburetor mixture adjustment setting
1. Have carburetor adjusted by a Sears or other
qualified service dealer
2. Use properly mixed fuel (40:1 mixture)
2. Incorrect fuel mixture
NOTE:
For repairs beyond the minor adjustments listed above, contact your nearest Sears Parts & Repair center at
(1-800-4-MY-HOME®) or other qualified service dealer for an adjustment.
16
SPECIFICATIONS
ENGINE*
Engine Type ................................................................................................................................................. Air-Cooled, 2-Cycle
Displacement................................................................................................................................................. (30 cc) (1.83 cu in.)
Idle Speed RPM ............................................................................................................................................. 3,400 - 4,400 rpm
Operating RPM......................................................................................................................................................... 7,200+ rpm
Ignition Type ........................................................................................................................... Electronic-MAX FIRE IGNITION™
Ignition Switch ..................................................................................................................................................... Rocker Switch
Spark Plug Gap.......................................................................................................................................... 0.025 in. (0.635 mm)
Lubrication .......................................................................................................................................................... Fuel/Oil Mixture
Fuel/Oil Ratio......................................................................................................................................................................... 40:1
Carburetor .................................................................................................................................................................. with primer
Starter .................................................................................................................................... INCREDI-PULL™ Starting system
Muffler ............................................................................................................................................................ Baffled with Guard
Fuel Tank Capacity ............................................................................................................................................. 20 oz. (600 ml.)
BLOWER
Throttle Control ................................................................................................................................................ Finger-Tip Trigger
Blower Velocity ..................................................................................................................................................... up to 170 mph
Blower Air Output .................................................................................................................................................. up to 485 cfm
Approximate Unit Weight (No fuel) ............................................................................................................................... 19.5 lb.
Use goggles and hearing protection
17
MODEL NO.
79499 / 41AR322G799
SPECIFY MODEL NO. WHEN ORDERING PARTS
30CC BACK PACK BLOWER
SERVICE SPARE PARTS LIST
REVISED DATE
N/A
DATE
11/19/2004
1/2
PAGE
MC-9211-334502
MC-9012-330301
MC-9SRCB-05-22
MC-9SXMBJ05-50
MC-9228-334503
MC-9014-GP0102
MC-9211-334501
MC-9017-334501
MC-9SGEB-04-10
MC-9017-334502
MC-9014-334507
MC-9292-334501F
MC-9014-334501
MC-9189-334501
MC-9131-334501
MC-9115-334501
MC-9290-334501
MC-9067-334501
MC-9NR-KV9129.8
MC-6221-830301
MC-9228-334502
MC-9288-320601-CH
MC-9SRCB-05-20
MC-9010-332102
MC-9SGKB-05-12.5
MC-9228-320602
MC-9228-MD0107
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Stocking Codes are:
A - Dealer stocked
MC-9SGEB-05-10
2
JFT Parts No.
MC-9295-310501
STK CODE
1
No.
MODEL NO.
B - Distributor stocked
PAWLS ASS'Y
STARTER HOUSING ASS'Y
SCREW
COIL WIRE
SCREW
IGNITION COIL
CRANK/ROD ASS'Y
KEY
NEEDLE BEARING
AXIS COVER
PISTON
PISTON PIN
CIRCLIP
PISTON RING
GASKET
CYLINDER
GASKET
COVER, STARTER SIDE
SCREW
COVER, FLYWHEEL SIDE
MUFFLER PLATE
MUFFLER GASKET
MUFFLER ASS'Y
SCREW
SCREW
GROMMET
PLATE, SPARK SIDE
SCREW
SPARK PLUG
Description
1
1
4
1
2
1
1
1
1
2
1
1
2
2
1
1
2
1
4
1
1
2
1
2
4
1
1
2
1
Q
79499 / 41AR322G799
SPECIFY MODEL NO. WHEN ORDERING PARTS
30CC BACK PACK BLOWER
54
53
52
51
50
49
48
47
46
45
44
43-4
43-3
43-2
43-1
43
42
41
40
39
38
37
36
35
34
33
32
31
30
No.
MC-9038-320601
MC-6NGB-05
MC-9WFB-12.1-30
MC-9127-320601
MC-9SKKBY05-18
MC-9228-334506
MC-9169-334501
MC-9CB-32
MC-9157-334501
MC-9014-334502
MC-9DB-620101
MC-9SGEB-05-20
MC-9151-334501F
MC-9PC03-08
MC-9151-334502F
MC-9228-334501
MC-9157-332101
MC-9014-334506
MC-9072-334501
MC-9012-334501
MC-9211-334503
MC-9SKKB-05-19
MC-9014-334505
MC-9287-334501
MC-9228-334511
MC-9SGEB-05-52
MC-9183-334501
MC-9017-334510
MC-9134-334501
JFT Parts No.
C - Factory stocked
STK CODE
SCREW HOUSING
NUT
WASHER
CONNECT AXIS
SCREW
FUEL TANK ASS'Y
FLYWHEEL
C RING
SEAL
GASKET, CRANKCASE SIDE
BEARING
SCREW
CRANKCASE, FLYWHEEL SIDE
PIN
CRANKCASE, STARTWE SIDE
CRANKCASE ASS'Y
SEAL
INSULATOR GASKET
INSULATOR
GROMMET
PLATE
SCREW
CARBURETOR GASKET
CARBURETOR
FILTER ASS'Y
SCREW
FILTER
FILTER COVER
SCREW
Description
SERVICE SPARE PARTS LIST
1
2
1
1
3
1
1
1
1
1
2
3
1
3
1
1
1
1
1
1
1
4
1
1
1
2
1
1
1
Q
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
STK CODE
MC-9228-320603
MC-9186-320603
MC-9186-320604
MC-9186-320605
MC-9189-320601
MC-9186-320602
MC-9036-320602
MC-9036-320601
MC-9186-320601
MC-9076-320601
MC-9SKKB-06-15
MC-9NHB-06
MC-9149-320601
MC-9RGP7.14-16.27
MC-9014-320601
MC-6NGB-06
MC-6WFB-06-18
MC-9038-320602
MC-9017-320601
MC-9SRCB-05-75
MC-9SKKBB-05-18
MC-9199-320601
MC-9NHC-08
MC-9WFB-8.1-30
MC-9151-320601
MC-9SRCBM05-30
MC-9012-320601
MC-6NDB-06
JFT Parts No.
THROTTLE LEVER ASS'Y
END PIPE
MIDDLE PIPE
BASE PIPE
ACTIVE RING
FLEX PIPE
WIRE CLAMP
HOSE BEND
ELBOW PIPE
O RING
SCREW
NUT
HARNESS
RIVET RIBBED
CUSHION BACK
NUT
WASHER
FRAME
COVER
SCREW
SCREW
SCREW HOUSING
NUT
WASHER
IMPELLER
SCREW
VIBRO-ISOLATING RUBBER
NUT
Description
N/A
11/19/2004
No.
REVISED DATE
DATE
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
3
4
1
1
2
10
1
1
1
1
4
3
2
Q
2/2
PAGE
California / EPA Emission Control Warranty Statement
Your Warranty Rights and Obligations
The California Air Resources Board, The Environmental Protection Agency and Sears, Roebuck and Co., are pleased to
explain the emission control system warranty on your 2005 and later small off-road engine. In California and the 49 states,
new small off-road engines must be designed, built and equipped to meet stringent anti-smog standards. Sears must warrant the emission control system on your small off-road engine for the periods of time listed below provided there has been
no abuse, neglect or improper maintenance of your small off-road engine.
Your Emission control system may include parts such as the carburetor or fuel-injection system, the ignition system, and catalytic converter. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, Sears will repair your small off-road engine at no cost to you including diagnosis, parts
and labor.
The 2005 and later small off-road engines are warranted for two years. If any emission-related part on your engine is
defective, the part will be repaired or replaced by Sears.
Owner’s Warranty Responsibilities
• As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your
operator’s manual. Sears recommends that you retain all receipts covering maintenance on your small off-road engine, but
Sears cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled
maintenance.
• As the small off-road engine owner, you should however be aware that Sears may deny you warranty coverage if your small
off-road engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
• You are responsible for presenting your small off-road engine to a Sears authorized service center as soon as problem
exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should call 1-800-4-MY-HOME®.
Manufacturer’s Warranty Coverage
• The warranty period begins on the date the engine or equipment is delivered to the retail purchaser.
• The manufacturer warrants to the initial owner and each subsequent purchaser, that the engine is free from defects in material and workmanship which cause the failure of a warranted part for a period of two years.
• Repair and replacement of warranted part will be performed at no charge to the owner at an authorized Sears service center. For the nearest location please contact Sears at: 1-800-4-MY-HOME®.
• Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled only for regular inspection to the effect of “Repair or Replace as Necessary” is warranted for the period. Any warranted part which is
scheduled for replacement as required maintenance will be warranted for the period of time up to the first scheduled
replacement point for that part.
• The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective if the
diagnostic work is performed at an authorized Sears Service Center.
• The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still under
warranty.
• Failures caused by abuse, neglect or improper maintenance are not covered under warranty.
• The use of add-on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to cover
failures of warranted parts caused by the use of add-on or modified parts.
• In order to file a claim, go to your nearest authorized Sears Service Center. Warranty service or repairs will be provided at
all authorized Sears Service Centers.
• Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair of
emission related parts and will be provided without charge to the owner. Any replacement part that is equivalent in performance or durability may be used in non-warranty maintenance or repair and will not reduce the warranty obligations of the
manufacturer.
• The following components are included in the emission related warranty: engine, air filter, carburetor, primer, fuel lines, fuel
pick up/fuel filter, ignition module, spark plug and muffler.
20
21