Shindaiwa B45_B45LA Trimmer Operator's Manual
Shindaiwa B45/B45LA is a powerful and versatile brushcutter designed for demanding tasks in forestry and landscaping. With its high-performance engine and exceptional cutting capabilities, it delivers reliable performance and efficiency. The B45/B45LA is ideal for clearing dense brush, overgrown vegetation, and maintaining landscapes. Its lightweight design and ergonomic features ensure comfortable handling and reduced operator fatigue during extended use.
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SHINDAIWA OWNER'S/OPERATOR'S MANUAL
B45/B45LA BRUSHCUTTER
B45
X750-015975
X750284-0005
1302D 1048 ES
Printed in Japan
B45LA
WARNING!
Minimize the risk of injury to yourself and others!
Read this manual and familiarize yourself with the contents. Always wear eye and hearing protection when operating this unit.
2
Introduction
The shindaiwa 45-series of hand power tools has been designed and built to deliver superior performance and reliability without compromise to quality, comfort, or durability.
Shindaiwa high performance engines represent the leading edge of 2-cycle engine technology, delivering exceptionally high power from remarkably low displacement and weight. As an owner/ operator, you’ll soon discover for yourself why shindaiwa is simply in a class by itself!
Attention Statements
Throughout this manual are special attention statements.
WARNING!
A statement preceded by the triangular attention symbol and the word “WARNING” contains information that should be acted upon to prevent serious bodily injury.
IMPORTANT!
The information contained in this manual describes units available at the time of publication.
YAMABIKO CORPORATION reserves the right to make changes to products without prior noti
¿
cation, and without obligation to make alterations to units previously manufactured.
CAUTION!
A statement preceded by the word
“CAUTION” contains information that should be acted upon to prevent mechanical damage.
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses special signi
¿
cance.
Contents
PAGE
Attention Statements ......................... 2
NOTE:
A statement preceded by the word “NOTE” contains information that is handy to know and may make your job easier.
General Safety Instructions ............... 3
Checking Unit Condition .................... 3
Safety Labels ..................................... 5
Unit Description ................................. 6
Speci
¿
cations .................................... 6
Assembly ........................................... 7
Mixing Fuel ...................................... 11
Starting the Engine .......................... 12
Stopping the Engine ........................ 12
Engine Idle Adjustment .................... 13
Harness ........................................... 13
Using a Brushcutter Blade ............... 14
Cutting Grass .................................. 15
General Maintenance ...................... 15
Spark Arrester Installation ............... 17
Long Term Storage .......................... 18
Blade Sharpening ............................ 18
Troubleshooting Guide .................... 19
IMPORTANT!
The operational procedures described in this manual are intended to help you get the most from this unit as well as to protect you and others from harm.
These procedures are guidelines for safe operation under most conditions, and are not intended to replace any safety rules and/or laws that may be in force in your area. If you have questions regarding your shindaiwa power tool, or if you do not understand something in this manual, your shindaiwa dealer will be glad to assist you. You may also contact YAMABIKO CORPORATION at the address printed on the back of this manual.
Read and follow this operators manual.
Failure to do so could result in serious injury.
Wear eye and hearing protection at all times during the operation of this unit.
Keep bystanders at least 50 feet (15 m) away during operation.
Beware of thrown or ricocheted objects.
Do not operate this unit with a blade unless the unit is equipped with a
Shindaiwa-approved handlebar.
Always wear a harness when operating this unit with a blade.
A harness is also recommended when using trimmer line.
Beware of blade thrust. A jammed blade can cause the brushcutter to jerk suddenly and may cause the operator to lose control of the unit.
General Safety Instructions
Work Safely
Brushcutters operate at very high speeds and can do serious damage or injury if they are misused or abused.
Never allow a person without training or instruction to operate this unit!
Stay Alert
You must be physically and mentally
¿
t to operate this unit safely.
WARNING!
WARNING!
Never make unauthorized attachment installations.
Never operate power equipment of any kind if you are tired or if you are under the in
À
uence of alcohol, drugs, medication or any other substance that could affect your ability or judgement.
WARNING!
Use Good Judgment
NEVER
operate the engine when transporting the unit.
NEVER
operate the engine indoors!
Make sure there is always good ventilation. Fumes from engine exhaust can cause serious injury or death.
ALWAYS
use the proper cutting tool for the job.
ALWAYS
stop the unit immediately if it suddenly begins to vibrate or shake. Inspect for broken, missing or improperly installed parts or attachments.
NEVER
extend trimming line beyond the length speci
¿
ed for your unit.
ALWAYS
keep the unit as clean as practical. Keep it free of loose vegetation, mud, etc.
ALWAYS
hold the unit
¿
rmly with both hands when cutting or trimming, and maintain control at all times.
ALWAYS
keep the handles clean.
ALWAYS
disconnect the spark plug wire before performing any maintenance work.
ALWAYS
, if a blade should bind fast in a cut, shut off the engine immediately. Push the branch or tree to ease the bind and free the blade.
WARNING!
Minimize the Risk of Fire
NEVER
smoke or light
¿
res near the unit.
ALWAYS
stop the engine and allow it to cool before refueling. Avoid over
¿
lling and wipe off any fuel that may have spilled.
ALWAYS
inspect the unit for fuel leaks before each use. During each re
¿
ll, check that no fuel leaks from around the fuel cap and/or fuel tank.
If fuel leaks are evident, stop using the unit immediately. Fuel leaks must be repaired before using the unit.
ALWAYS
move the unit to a place well away from a fuel storage area or other readily
À
ammable materials before starting the engine.
NEVER
place
À
ammable material close to the engine muf
À
er.
Checking Unit Condition
NEVER
operate the unit with the cutting attachment shield or other protective devices (harness, ignition switch, blade retention clip, etc.) removed!
WARNING!
A cutting attachment shield or other protective device is no guarantee of protection against ricochet. YOU
MUST ALWAYS GUARD AGAINST
FLYING DEBRIS!
Use only authorized shindaiwa parts and accessories with your shindaiwa brushcutter. Do not make modi
¿
cations to this unit without the written approval of YAMABIKO CORPORATION.
ALWAYS
make sure the cutting attachment is properly installed and
¿
rmly tightened before operation.
NEVER
use a cracked or warped cutting attachment. If a properly installed attachment vibrates, replace the attachment with new one and re-check.
ALWAYS
stop the engine immediately and check for damage if you strike a foreign object or if the unit becomes tangled. Do not operate with broken or damaged equipment.
NEVER
allow the engine to operate at high RPM without a load. Doing so could damage the engine.
NEVER
operate a unit with worn or damaged fasteners or attachment holders.
NEVER
cut with a dull blade. Doing so will increase the risk of blade thrust and may also cause equipment damage.
3
The Properly Equipped Operator
Wear hearing protection devices and a broad-brimmed hat or helmet.
Wear close-
¿
tting clothing to protect legs and arms. Gloves offer added protection and are strongly recommended. Do not wear clothing or jewelry that could get caught in machinery or underbrush. Secure long hair so that it is above shoulder level.
NEVER wear shorts!
Keep a proper footing and
do not overreach.
Maintain your balance at all times during operation.
Always wear eye protection such as goggles or safety glasses to shield against thrown objects.
Always wear a harness when operating a unit equipped with a blade.
Always operate with both hands
¿
rmly gripping the unit.
When operating with a blade, make sure the handle is positioned to provide you with maximum protection from contacting the blade.
Always make sure the appropriate cutting attachment shield is correctly installed and in good condition.
Keep away from the rotating trimmer line or blade at all times, and never lift a moving attachment above waist-high.
Wear appropriate footwear (nonskid boots or shoes): do not wear open-toed shoes or sandals.
Never work barefooted!
FIG1B
Figure 1
4
Be Aware of the Working Environment
Avoid long-term operation in very hot or very cold weather.
Make sure bystanders or observers outside the 50-foot
“danger zone” wear eye protection.
Be extremely careful of slippery terrain, especially during rainy weather.
If contact is made with a hard object, stop the engine and inspect the cutting attachment for damage.
50
FEET
Reduce the risk of bystanders being struck by
À
ying debris. Make sure no one is within 50 feet (15 meters)— that’s about 16 paces—of an operating attachment.
Be constantly alert for objects and debris that could be thrown either from the rotating cutting attachment or bounced from a hard surface.
50'
FIG2B
Beware of a coasting blade when brushcutting. A coasting blade can injure while it continues to spin after the throttle trigger is released or after the engine is stopped.
ALWAYS clear your work area of trash or hidden debris that could be thrown back at you or toward a bystander. When operating in rocky terrain or near electric wires or fences, use extreme caution to avoid contacting such items with the cutting attachment.
Figure 2
Safety Labels
Figure 3
B45
B45LA
IMPORTANT!
Safety and Operation Information Labels:
Make sure all information labels are undamaged and readable. Immediately replace damaged or missing information labels. New labels are available from your local authorized shindaiwa dealer.
5
Unit Description
Using the accompanying illustrations as a guide, familiarize yourself with this unit and its various components.
Understanding this unit helps ensure top performance, long service life, and safer operation.
Prior to Assembly
Before assembling this product, please make sure you have all the components required for a complete unit:
Ŷ
Engine Assembly (Powerhead)
Ŷ
Outer Tube Assembly
Ŷ
Cutting Attachment Shield
Ŷ
Handle Bar
Ŷ
Tool kit including: Hex wrenches and a combination spark plug wrench.
Ŷ
Goggles
Carefully inspect all components for damage.
IMPORTANT!
The terms “left,” “left-hand,” and “LH”:
“right,” “right-hand,” and “RH”; “front” and “rear” refer to directions as viewed by the operator during normal operation of this product.
Gearcase
Throttle Trigger
Outer Tube
Cutting
Attachment
Shield
Brushcutter Blade
Throttle Trigger
Outer Tube
Gearcase
Ignition
Switch
B45 BRUSHCUTTER
Cylinder
Cover
Spark
Plug
Hanger
Fuel
Tank
Handlebar
Stand
Ignition
Switch
B45LA BRUSHCUTTER
Cylinder
Cover
Spark
Plug
Hanger
Fuel
Tank
Handlebar
Stand
Cutting
Attachment
Shield
WARNING!
Do not make unauthorized modi
¿
cations or alterations to this unit or its components.
Brushcutter Blade
Figure 4
IMPORTANT!
International B45/B45LA brushcutter units do not have the spark arrester installed in the muf
À
er. Before placing the brushcutter in service, check local, state and federal regulations to determine if a spark arrester is required in your area.
6
Speci
¿
cations
Model ................................................................................................................
B45LA
Engine Model....................................................................................................
Dry weight without cutting attachment ..............................................................
SM45 Engine
17.6 lb./8.0kg
SB45LA Engine
17.8 lb./8.1kg
2-cycle, vertical cylinder, air cooled
Type ..................................................................................................................
Bore x Stroke ....................................................................................................
Displacement ................................................................................................... .
Maximum Power Output ...................................................................................
Operating rpm Range .......................................................................................
Transmission Type............................................................................................
40mm x 33mm
41.5.cc/2.58 cu. in.
2.3 hp @ 7500 rpm (r/min)
5500–8500 rpm (r/min)
Fuel/Oil Ratio ....................................................................................................
Fuel Tank Capacity ...........................................................................................
Carburetion .......................................................................................................
Ignition ..............................................................................................................
Automatic centrifugal clutch through bevel gears
50:1 with shindaiwa Premium 2-cycle mixing oil
25.7 oz./760 ml
TK, Diaphragm type
Fully electronic, transistor controlled
Champion CJ8
Spark Plug ........................................................................................................
Air Cleaner........................................................................................................
Starting Method ................................................................................................
Stopping Method ..............................................................................................
Foam element
Recoil
Toggle on-off switch, grounding type
Speci
¿
cations subject to change without notice
Assembly: Driveshaft/Powerhead B45
B45 Brushcutter
1. Place the powerhead on a
À
at surface, resting on its stand.
2. Lubricate the mainshaft splines with molybdenum disul
¿
de (moly) type grease.
3. Slide the outer tube/cap assembly on to the fan cover. Make sure the mainshaft splines are fully engaged into the clutch drum. See Figure 5-A.
CAUTION!
Do not force the outer tube into the powerhead! If the outer tube installation is dif
¿
cult, rotate the outer tube or mainshaft until you feel the mainshaft splines engage inside the fan cover housing.
4. If necessary, rotate the outer tube assembly until the gearcase output shaft is pointing down, opposite to the spark plug.
5. Install four screws with ignition switch in upper right mounting position as shown in Figure 5-A. Tighten all screws evenly to 26-44 in/lbs.
Figure 5A
Ignition Switch
Hanger
Powerhead
Fan Cover
Outer
Tube
Assembly: Driveshaft/Powerhead B45LA
B45LA Brushcutter
1. Place the powerhead on a
À
at surface, resting on its built-in stand.
(spark plug facing “up”)
2. Use the 4mm hex wrench to loosen the two clamp screws on the powerhead tube clamp.
3. Slide the outer tube assembly into the powerhead tube clamp. See
Figure 5-B.
Decal
CAUTION!
Do not force the outer tube into the powerhead! If the outer tube installation is dif
¿
cult, rotate the outer tube or mainshaft until you feel the mainshaft splines engage inside the fan cover housing. The outer tube decal must align with the powerhead tube clamp as shown!
Figure 5B
4. Rotate the outer tube until the gearcase output shaft faces down, away from the spark plug on the powerhead.
5. Tighten both tube clamp screws equally.
Powerhead
Clamp
Screws
Mainshaft
Outer
Tube
Tube
Clamp
04503
Stand
Stand
Spark
Plug
Spark
Plug
7
8
Install the Cutting Attachment Shield
1. If using a blade-type cutting attachment, remove the line cutter and save for future use.
2. Remove the 6mm clamp screw from the gearcase clamp.
3. Mount the cutting attachment shield onto the outer tube assembly using the longer (40 mm) 6 mm clamp screw (supplied in the parts package)
¿
nger tight only. See Figure 6.
4. Loosely install the four socket-head cap screws through the upper bracket and into the cutting attachment shield.
5. Firmly tighten the clamp screw.
6. Install the
À
at washer and retaining nut onto the clamp screw and tighten securely.
Figure 6
CAUTION!
Make sure the clamp screw and retaining nut are securely tightened before tightening the four sockethead cap screws
.
Clamp
Screw
Socket-
Head Cap
Screw
Flat
Washer
Retaining
Nut
Bracket
Gearcase
WARNING!
7. Tighten the four socket-head cap screws to secure the cutting attachment shield.
NEVER operate the B45/B45LA without the cutting attachment shield installed and tightly secured!
35005
Outer
Tube
Cutting Attachment Shield
Line Cutter
Assembly: Handlebar and Throttle Assembly
Install the Handlebar:
1. Use the 4mm hex wrench to remove the lower clamp retaining screws from the handlebar bracket. Seperate the clamp from the bracket.
2. Position the handle bar on the outer tube behind the handle positioning lable. Reassemble the lower clamp to the handlebar bracket in the reverse order of disassembly. See Figure 7.
3. Firmly tighten both lower cap retaining screws.
Throttle Assembly
Handlebar
Handlebar
Bracket
Install the Throttle Cable:
1. Route the throttle cable through the cable holder and up and through the right handlebar grip. See Figures 8 and 9.
2. Using a small screwdriver, pry on the throttle trigger retaining clip and partially pull it out of the throttle assembly to allow the throttle trigger to swing out. See Figure 9.
3. Insert the cable end into the recess in the trigger and swing the trigger back into the throttle assembly then push the trigger retaining clip back into place. See Figure 9.
4. Install the hip protector with the throttle cable inside as shown in
Figure 9A.
5. Operate the throttle and check for smooth operation.
Handle Position
Label
03509
Outer Tube
Lower
Clamp
Lower Clamp
Retaining Screws
Figure 7
Throttle
Cable
Figure 8
Throttle
Lever
03511
Cable End
Throttle Cable
Figure 9
Cable
Holder
Trigger
Retaining
Clip
03510
Figure 9A
Hip
Protector
Adjust Throttle Cable Free Play
1. Test the throttle lever for smooth operation. If any stiffness or binding are noted, the cause must be identi
¿
ed and corrected before the brushcutter can be placed in service.
2. Test the throttle lever for proper “free play” of approximately 7mm in the idle position. See Figure 10. If necessary, adjustments can be made at the carburetor by:
Ŷ
Temporarily moving the adjuster cover to expose the cable adjuster.
Ŷ
Loosening the cable locknut and then screwing the cable adjuster in or out until proper free play is achieved.
See Figure 11.
Adjusting Free Play
Adjuster
Cover
Checking Free Play
B45/B45LA Brushcutter
7mm
Free
Play
Figure 10
03516
Cable
Adjuster
Figure 11
Cable
Locknut
Blade Selection
WARNING!
Use only cutting attachments recommended by YAMABIKO CORPORA-
TION.
WARNING!
The type of BLADE used MUST be matched to the type and size of material cut.
An improper or dull blade can cause serious personal injury. Blades
MUST be sharp. Dull blades increase the chance of kick-out and injury to yourself and bystanders.
Plastic/Nylon Grass/Weed Blades
may be used where ever the nylon line head is used. DO NOT use this blade for heavy weeds or brush.
8 Tooth Weed/Grass Blade
is designed for grass, garden debris and thick weeds. DO NOT use this blade for brush or heavy woody growth, 19 mm diameter or larger.
80 Tooth Brush Blade
is designed for cutting brush and woody growth up to 13 mm diameter.
22 Tooth Clearing Blade
is designed for dense thickets and saplings up to
64 mm diameter.
9
10
Assembly: Install the Blade
NOTE:
The B45/B45LA is shipped with Holder
“A,” the safety clip, Holder “B,” shaft bolt, and bolt guard installed. The shaft bolt is a
LEFT-HAND THREAD AND IS REMOVED
IN A CLOCKWISE ROTATION!
Shaft Bolt
Bolt Guard
1. With the gearcase output shaft facing up, rotate the gearshaft and
Holder “A” until the hole in Holder “A” aligns with the matching hole in the gearcase
À
ange, and then lock the holder to the gearcase by inserting the long end of the hex wrench through both holes. See Figure 12.
2. Remove the shaft bolt, bolt guard and
Holder “B”. See Figure 12.
3. Slide the safety clip off center on the gearcase shaft. See Figure 12-A.
4. Slide the blade over the safety clip and onto the
À
ange on Holder “A”.
See
¿
gure 12-B.
5. Lock the blade on the shaft by centering the safety clip. See Figure 12-C.
6. Install holder “B” on the gearcase shaft. See Figure 13.
B
Holder “B”
Safety
Clip
Holder
“A”
Hex
Wrench
Gearcase
Shaft
Slip the blade into place
35012
35010
IMPORTANT!
The machined recess in Holder “B” must completely surround the safety clip, and both holders must be
À
at against the surface of the blade.
Figure 12
WARNING!
Never operate the brushcutter without the safety clip installed and both holders tightly secured and
À
at against the blade surface!
7. Lock Holder “A” to the gearcase by inserting the long end of the hex wrench through both holes as done in step 1 and tighten the shaft bolt securely with the combination spark plug wrench. See Figure 14.
8. Remove the hex wrench.
A
C
Slide the saftey clip off-center
Center the safety clip
35013
35011
The B45/B45LA should now be completely assembled.
35014
Install Holder
“B”
Saw Blade
Figure 13
Tighten the assembly
Combination Spark
Plug/Screwdriver
Wrench
Holder “B”
Bolt Guard
35015
Hex Wrench
Blade not shown for clarity
Figure 14
Assembly: Installing a Trimmer Head
NOTE:
The B45/B45LA is shipped with Holder
“A”, the blade retainer (safety clip), Holder
“B,” shaft bolt, and bolt guard installed.
The shaft bolt is a LEFT-HAND thread.
Remove it by turning CLOCKWISE!
A
Bolt Guard
(not used)
Shaft Bolt
(not used)
Holder “B”
1. Remove the shaft bolt, bolt guard,
Holder “B,” safety clip and the exsisting cutting attachment.
2. With the gearcase output shaft facing up, rotate the gearshaft and
Holder “A” until the hole in Holder “A” aligns with the matching hole in the gearcase
À
ange, and then lock the holder to the gearcase by inserting the long end of the hex wrench through both holes. See Figure 15-
A.
3. Using the combination spark plug wrench, remove the shaft bolt, bolt guard, Holder “B” and the safety clip.
(The bolt guard, shaft bolt and safety clip are not used with a trimmer head). See Figure 15-A.
4. Install Holder “B” on the gearcase shaft. The splined hole on Holder “A” must engage with the gearcase shaft.
Safety Clip
(not used)
Holder “A”
Figure 15
35007
Gearcase
Shaft
5. Using the hex wrench to secure
Holder “A,” install and hand-tighten the trimmer head (counter-clockwise to install). See Figure 15-B.
B
Hand-tighten Trimmer Head
(counter-clockwise to install)
Hex Wrench
35008
6. Remove the hex wrench from the gearcase and holder.
Mixing Fuel
CAUTION!
Some gasolines contain alcohol as an oxygenate! Oxygenated fuels may cause increased operating temperatures. Under certain conditions, alcohol-based fuels may also reduce the lubricating qualities of some mixing oils. Never use any fuel containing more than 10% alcohol by volume!
Generic oils and some outboard motor oils may not be intended for use in high-performance air cooled
2-cycle engines, and should never be used in your shindaiwa engine!
CAUTION!
This engine is designed to operate on a 50:1 mixture consisting of unleaded gasoline and a premium
2-cycle mixing oil only. Use of non-approved mixing oils can lead to excessive maintenance costs and/or engine damage.
Ŷ
Use only fresh, clean unleaded gasoline with a pump octane rating of 87 or higher.
Ŷ
Mix gasoline with 50:1 shindaiwa
Premium 2-cycle mixing oil or with an equivalent high quality 2-cycle mixing oil.
Example of 50:1 mixing quantites:
Ŷ
1 gallon of gasoline to 2.6 oz. mixing oil.
Ŷ
5 liters of gasoline to 100 ml. mixing oil.
IMPORTANT!
Mix only enough fuel for your immediate needs! If fuel must be stored longer than 30 days and shindaiwa One oil with fuel stabilizer is not used, it should
¿
rst be treated with a fuel stabilizer such as
STA-BIL™.
Filling the Fuel Tank
1. Place the unit on a
À
at, level surface.
2. Clear any dirt or other debris from around the fuel
¿
ller cap.
3. Remove the fuel cap, and
¿
ll the tank with clean, fresh fuel.
It is not permitted to
¿
ll fuel above the shoulder level of fuel tank.
Shoulder Level
WARNING!
Minimize the risk of
¿
Ŷ
STOP
the engine before refueling.
Ŷ
ALWAYS
allow the unit to cool before refueling!
Ŷ
Wipe all spilled fuel and move the unit at least 10 feet (3 meters) from the fueling point before restarting!
Ŷ
NEVER
start or operate this unit if the carburetor, fuel lines, fuel tank and/or fuel tank cap are damaged or leaking.
Ŷ
NEVER
smoke or light any
¿
res near the unit or fuels!
Ŷ
NEVER
place any
À
ammable material near the engine muf
À
er!
Ŷ
NEVER
operate the engine without the muf
À
er in place and properly functioning!
4. Reinstall the fuel
¿
ller cap and tighten
¿
rmly.
11
Starting the Engine
B45/B45LA Throttle Assembly
Lock
Button
Throttle
Lever
03518
Figure 16
1. Set the throttle lever to “fast idle” by performing the following: a. Squeeze and hold throttle lever
(toward the handgrip).
b. Depress and hold throttle lever lock button.
c. While depressing throttle lever lock, release throttle lock lever.
Primer
Lever
WARNING!
KEEP WELL CLEAR OF THE
CUTTING ATTACHMENT! THE
CUTTING ATTACHMENT MAY
ROTATE WHEN THE ENGINE IS
STARTED!
Ŷ
Place the unit on the ground during all starting operations.
Ŷ
Make sure you have a secure footing, and keep a
¿
rm grip on the unit as well.
Ŷ
Keep all bystanders and pets well clear of the trimmer during starting.
Make sure the cutting attachment is clear of obstructions!
7. If the engine does not continue to run, repeat the starting procedure as previously described.
8. When the engine starts, clear excess fuel from the combustion area by revving the engine several times with the throttle lever.
WARNING!
The cutting attachment will rotate as the engine accelerates!
9. Operating the throttle will automatically disengage the fast-idle setting.
If the engine does not start–
Repeat the appropriate starting procedures for a hot or cold engine. If the engine still fails to start, use the following procedure for “Starting a Flooded
Engine”. See page 12.
Stopping the engine
12
Figure 19
Figure 17A
Primer
Bulb
03523
WARNING!
Ignition
OFF
Figure 17
Over
À
ow Tube
2. Prime the engine by repeatedly depressing the carburetor primer bulb while pushing down on the primer lever (Fig. 17A) until fuel can be seen
À
owing through the transparent over
À
ow tube. See Figure 17.
IMPORTANT!
The primer system only pushes fuel through the carburetor and out the over
À
ow tube. Repeatedly pressing the primer bulb will not
À
ood the engine with fuel.
Choke
Closed
Never start engine from the operating position!
Figure 21
4. While holding the outer tube
¿
rmly with your left hand, use your right hand to pull the starter handle slowly upward until you feel the starter engage. See Figure 19.
5. Start the trimmer by pulling the starter handle upward rapidly.
Idle the engine brie
À
y before stopping
(about 2 minutes), then push down on the ignition switch to turn ignition “OFF”.
See Figure 21.
CAUTION!
The recoil starter can be easily damaged by abuse!
Ŷ
Always engage the starter before attempting to crank the engine.
Ŷ
Never pull the starter cord to its full length.
Ŷ
Always rewind the starter cord slowly.
When the engine starts or
¿
res–
Choke
Open
Figure 18
3.
(Cold Engine Only)
Choke the engine by moving the choke lever up towards the spark plug (choke is closed). See Figure 18.
Figure 20
6. Open the choke by moving the choke lever down (toward the fuel tank).
See Figure 20.
Starting a Flooded Engine
1. Disconnect the spark plug lead, and then use the spark plug wrench to remove the spark plug (turn counterclockwise to remove).
2. If the spark plug is fouled or is soaked with fuel, clean or replace the plug as necessary. For spark plug speci
¿
cations and gapping procedure, see page 15.
3. Crank the engine several times with the choke open and at wide open throttle to clear excess fuel from the combustion chamber.
Spark Plug
Turn counterclockwise to remove
Engine Idle Adjustment
The engine must return to idle speed whenever the throttle lever is released.
Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutting attachment when the throttle is released.
Idle Speed Adjustment
WARNING!
The cutting attachment must NEVER rotate at engine idle! if the idle speed cannot be adjusted by the proceedure described here, have the unit inspected at an authorized shindaiwa dealer.
1. Place the unit on the ground, then start the engine and allow it to idle
2-3 minutes until warm.
Slow Air
Screw
Harness
Brushcutter Harness
A harness provides protection against blade thrust. In addition, a harness gives signi
¿
cant support and comfort to help ensure safe and ef
¿
cient operation.
When operating a brushcutter, make sure both the handle and harness are adjusted to the size of the operator using the unit.
WARNING!
Always wear a harness when operating this unit with a blade.
IMPORTANT!
Adjust the harness so the shoulder pads rest comfortably on both shoulders and the cutting path of the cutting attachment is parallel to the ground. Make sure all hooks and adjustment devices are secure.
A harness is required for use with brushcutters
Figure 22
4. Replace the spark plug and tighten it
¿
rmly with the spark plug wrench. If a torque wrench is available, torque the spark plug to 148-165 inch-pounds
(170-190 kg/cm).
CAUTION!
Incorrect spark plug installation can result in serious engine damage!
5. Repeat the starting procedures for a warm engine.
6. If the engine still fails to start or
¿
re, refer to the troubleshooting chart at the end of this manual.
Idle
Adjusting Screw
Main Carburetor
Adjustment Screw
Figure 23
2. If the attachment rotates when the engine is at idle, reduce the idle speed by turning the idle adjustment screw counter-clockwise. See Figure
23.
3. If a tachometer is available, the engine idle speed should be
¿
nal adjusted to 2,750 (±250) rpm (r/min).
Initial carburetor mixture adjustments are:
Slow air screw 0 turn.
Main adjusting screw 2 turns ± 1/4.
Adjustments may vary because of altitudes and other factors. See your authorized shindaiwa dealer for correct adjustments.
Figure 24
13
14
Using A Brushcutter Blade
WARNING!
Ŷ
Before working with a bladeequipped unit, always inspect and clean the area of objects that could interfere with or damage the blade.
Ŷ
Never use a blade near sidewalks, fence posts, buildings or other objects that could cause injury or damage.
Ŷ
Never use a blade for purposes other than those for which it was designed.
Ŷ
Whenever you strike a hard object with a blade, always stop the brushcutter and carefully inspect the blade for damage. NEVER
OPERATE THE BRUSHCUTTER
WITH A DAMAGED BLADE!
Ŷ
A blade-equipped unit
must
be equipped with a bicycle-type handlebar as well as a harness or strap.
Ŷ
Always make sure the cutting attachment shield is properly installed before operating the unit.
The blade rotates counter-clockwise.
For best performance and to minimize being struck by debris, move the blade from right to left while advancing on your work.
Position the blade so cuts are made between the blade’s 7 o’clock and
10 o’clock positions (as viewed from above). DO NOT cut between the 10 o’clock and 5 o’clock positions (shaded area). See Figure 25.
WARNING!
When cutting wood with a blade, feed the blade slowly.
Never strike or
“slam” a spinning blade against the wood.
WARNING!
DO NOT use 2-tooth or NON- shindaiwa approved 4-tooth cutting blades with shindaiwa brushcutters.
Blade Thrust
‘Blade thrust’ is a sudden sideways or backward motion of the brushcutter.
Such motion may occur when the blade jams or catches on an object such as a sapling tree or tree stump. BE CON-
STANTLY ALERT FOR BLADE THRUST
AND GUARD AGAINST ITS EFFECTS!
Vertical cuts
Hold the brushcutter with the blade at a
90° angle to the ground so the blade’s bottom edge rotates toward the operator. Move the blade from top to bottom through the cut, and cut only with the bottom edge of the blade. See Figure
26.
WARNING!
Brushcutter Handlebar
A brushcutter’s handlebar helps prevent the operator from moving forward, or the unit moving rearward, thus preventing inadvertent bodily contact with the blade. ALWAYS KEEP THE HANDLE-
BAR SECURELY IN PLACE ON THE
UNIT!
When making vertical cuts, never allow the blade to exceed waist height.
Engine Operating Speeds
Operate the engine at full throttle while cutting. Best fuel ef
¿
ciency is obtained by releasing the throttle when swinging back after a cut.
Ŷ
To prevent possible engine damage, do not allow the brushcutter to run at high speeds without a load.
Ŷ
Avoid operating the attachment at low speeds. Doing so can lead to rapid clutch wear. In addition, slow-speed operation tends to cause grass and debris to wrap around the cutting attachment.
OK To Cut
Seven
O’Clock
Figure 25
DO NOT CU
T
Blade
Rotation
Five
O’Clock
35032
Cut on the left side of the blade.
KEEP YOUR BODY OUTSIDE THE
PATH OF BLADE ROTATION
Figure 26
Ten O’Clock
Cutting Grass General Maintenance
Your shindaiwa B45/B45LA Brushcutter may be
¿
tted with one of several shindaiwa trimmer head models, each with features for speci
¿
c applications and/or operational requirements.
For proper operation, always refer to the instructions accompanying the trimmer head being used. Available trimmer head styles include:
Ŷ
Semi-automatic.
Trimmer line is indexed when the operator taps the trimmer head on the ground during operation.
Ŷ
Manual.
The operator indexes line manually with the grass trimmer stopped.
Ŷ
Fixed.
The operator must stop the unit and add new lengths of trimmer line manually.
Ŷ
Flail.
This device, designed for clearing weeds and light brush, features three nylon blades attached to the head by pivots.
WARNING!
Before performing any maintenance, repair or cleaning work on the unit, make sure the engine and cutting attachment are completely stopped.
Disconnect the spark plug wire before performing service or maintnenance work.
WARNING!
Non-standard parts may not operate properly with your unit and may cause damage and lead to personal injury.
NOTE:
Using non-standard replacement parts could invalidate your shindaiwa warranty.
CAUTION!
Do not push the rotating line into trees, wire fences or any material that could tangle or break line ends.
Engine Operating Speeds
Operate at full throttle while cutting grass.
CAUTION!
Operation at low rpm can lead to premature clutch failure.
Trimming and Mowing Grass
RETURN
PATH
CUTTING
PATH
Blades
Keep blades sharp and check blade condition frequently. If a blade’s performance changes suddenly, stop the engine and check the blade for cracks or other damage. Replace a damaged blade IMMEDIATELY!
WARNING!
Ŷ
Never repair a damaged blade by welding, straightening, or by modifying its shape. An altered blade may break during operation, resulting in serious personal injury.
Ŷ
DO NOT use 2-tooth or NON- shindaiwa approved 4-tooth cutting blades on shindaiwa trimmers or brushcutters.
Ŷ
Blades are
not
interchangeable between shindaiwa edgers and trimmer/brushcutter models.
Operating any unit with a blade or attachment not approved for that unit can be hazardous and may cause serious injury.
Muf
À
er
This unit must never be operated with a faulty or missing muf
À
er. Make sure the muf
À
er is well secured and in good condition. A worn or damaged muf
À
er is a
¿
re hazard and may also cause hearing loss.
Spark Plug
Keep the spark plug and wire connections tight and clean.
Fasteners
Make sure nuts, bolts, and screws
(except carburetor adjusting screws) are tight.
03529
Figure 27
Hold the unit so the trimmer head is angled slightly into the area to be cut. To ensure maximum trimmer-line service life, cut only with the tip of the trimmer line. To prevent grass clippings from being thrown back towards the operator or wrapping around the gearcase, swing the unit’s trimmer head from left to right while cutting. Keep the trimmer head horizontal. See Figure 27.
15
16
Daily Maintenance
Prior to each work day,
perform the following:
Ŷ
Remove all dirt and debris from the engine, check the cooling
¿
ns and air cleaner for clogging, and clean as necessary.
Ŷ
Carefully remove any accumulations of dirt or debris from the muf
À
er and fuel tank. Dirt build-up in these areas can lead to engine overheating,
¿
re, or premature wear.
Ŷ
Check for loose or missing screws or components. Make sure the cutting attachment is securely fastened.
Ŷ
Check the entire unit for leaking fuel or grease.
10/15-Hour Maintenance
Spark Plug
Turn counterclockwise to remove
10-Hour Maintenance
50-hour Maintenance
Every 50 hours of operation
(more frequently in dusty or dirty conditions):
Ŷ
Remove and clean the cylinder cover and clean grass and dirt from the cylinder
¿
ns.
New
Grease
Old
Grease
Air Cleaner
Element
Remove (3)
Screws
0.024-inch
(0.6 mm)
35035
Inner
Screen
Outer
Screen
Clean the spark plug and check the gap at the electrode.
Figure 29
Figure 28
Clip
Every 10 hours of operation
(more frequently in dusty or dirty conditions):
Ŷ
Remove the air cleaner element from the carburetor and clean it thoroughly with soap and water. Let dry before reinstalling the element.
See Figure 28.
CAUTION!
Do not operate the unit if the air cleaner or element is damaged, or if the element is wet.
Every 10 to 15 hours of operation:
Ŷ
Remove and clean the spark plug.
Adjust the spark plug electrode gap to 0.024-inch (0.6 mm). If the plug must be replaced, use only a Champion CJ8 or equivilent spark plug of the correct heat range. See Figure
29.
CAUTION!
Before removing the spark plug, clean the area around the plug to prevent dirt and debris from getting into the engine’s internal parts.
Gear
Shaft
Collar
Figure 30
Ŷ
Remove the cutting attachment, holder and the gear shaft collar. Remove the
¿
ller plug from the side of the gearcase and press new grease into the gearcase until the old grease has been pushed out. Use only lithiumbase grease such as shindaiwa
Gearcase Lubricant or equivalent.
See Figure 30.
Fuel
Filter
Fuel
Line
Hooked
Wire
Figure 31
Ŷ
Use a hooked wire to extract the fuel
¿
lter from inside the fuel tank. Remove and replace the
¿
lter element.
Before reinstalling the
¿
lter, inspect the condition of the fuel line. If damage or deterioration are noted, the unit should be removed from service until it can be inspected by a shindaiwa-trained service technician.
See Figure 31.
CAUTION!
Make sure you do not pierce the fuel line with the end of the hooked wire, the line is delicate and can be damaged easily.
Spark Arrester Installation and Service B45
WARNING!
Never operate the unit with a damaged or missing muf
À
er! Operating with missing or damaged exhaust components is a
¿
re hazard and could also damage your hearing.
Muf
À
er
Socket-head
Capscrews
45038
IMPORTANT!
International brushcutter units do not have the spark arrester installed in the muf
À
er. Before placing the brushcutter in service, check local, state and federal regulations to determine if a spark arrester is required in your area.
Spark Arrester Screen
Muf
À
er Cowl (secured by 3 socket-head capscrews)
1. Obtain a spark arrester from a shindaiwa dealer.
2. Remove the 3 socket-head capscrews retaining the muf
À
er cowl and remove the cowl. See Figure 32-A.
3. Install the spark arrester screen with a light tap of a mallet to seat.
Figure 32A
NOTE:
The screen is held in place by a press
¿
t on the muf
À
er exhaust outet.
4. Reinstall the muf
À
er cowl and tighten the 3 socket-head capscrews securely.
If the engine becomes hard to start or has low power, the spark arrester screen should be inspected and cleaned.
Ŷ
Remove the spark arrester screen and clean with a stiff bristle brush.
IMPORTANT!
If carbon deposits are severe or if no performance improvement is noted, this unit should be inspected by an authorized shindaiwa servicing dealer.
Spark Arrester Installation and Service B45LA
WARNING!
Never operate the unit with a damaged or missing muf
À
er! Operating with missing or damaged exhaust components is a
¿
re hazard and could also damage your hearing.
Muf
À
er
Socket-head
Capscrews
1. Obtain a spark arrester from a shindaiwa dealer.
2. Remove the 2 socket-head capscrews retaining the muf
À
er cowl and remove the cowl. See Figure 32-B.
3. Install the spark arrester screen with a light tap of a mallet to seat.
NOTE:
The screen is held in place by a press
¿
t on the muf
À
er exhaust outet.
4. Reinstall the muf
À
er cowl and tighten the 2 socket-head capscrews securely.
Spark Arrester Screen
Figure 32B
Muf
À
er Cowl (secured by 2 socket-head capscrews)
If the engine becomes hard to start or has low power, the spark arrester screen should be inspected and cleaned.
Ŷ
Remove the spark arrester screen and clean with a stiff bristle brush.
IMPORTANT!
If carbon deposits are severe or if no performance improvement is noted, this unit should be inspected by an authorized shindaiwa servicing dealer.
17
18
Long Term Storage
Whenever the unit will not be used for
30 days or longer, use the following procedures to prepare it for storage:
Ŷ
Clean external parts thoroughly.
Ŷ
Drain all the fuel from the fuel tank.
IMPORTANT!
All stored fuels should be stabilized with a fuel stabilizer such as STA-BIL™.
To remove the remaining fuel from the fuel lines and carburetor and with the fuel drained from the fuel tank;
1. Prime the primer bulb until no more fuel is passing through.
2. Start and run the engine until it stops running.
3. Repeat steps 1 and 2 until the engine will no longer start.
CAUTION!
Gasoline stored in the carburetor for extended periods can cause hard starting, and could also lead to increased service and maintenance costs.
Ŷ
Remove the spark plug and pour about 1/4 ounce of 2-cycle mixing oil into the cylinder through the spark plug hole. Slowly pull the recoil starter 2 or 3 times so oil will evenly coat the interior of the engine. Reinstall the spark plug.
Ŷ
Before storing the unit, repair or replace any worn or damaged parts.
Ŷ
Remove the air cleaner element from the carburetor and clean it thoroughly with soap and water, let dry and reassemble the element.
Ŷ
Store the unit in a clean, dust-free area.
Blade Sharpening
When the cutting edges of the blade become dull, they can be resharpened with a few strokes of a
¿
le.
In order to keep the blade in balance, all cutting edges must be sharpened equally.
Shindaiwa Tornado™ Blade
To sharpen the cutters on a shindaiwa
Tornado Blade, use a 7/32-inch round
¿
le. File the leading edge of each tooth to a razor edge. The top plate of each tooth should angle back 30°. See Figure
33.
Figure 33
Round File
30°
WARNING!
Sharpen only the cutting teeth of a blade. DO NOT alter the contour of the blade in any way.
Multiple-tooth Circular Blade
Use a round
¿
le to maintain a radius of
0.04 to 0.06” (1 to 1.5 mm) at the base of each tooth. Cutting edges must be offset equally on each side. See Figure
34.
Round
File
Figure 34
Troubleshooting Guide
What To Check
Does the engine crank?
NO
YES
Good compression?
NO
ENGINE DOES NOT START
Possible Cause
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Remedy
Consult with an authorized servicing dealer.
Loose spark plug.Excess wear on cylinder,piston,rings.
Tighten and retest.
Consult with an authorized servicing dealer.
YES
Does the tank contain fresh fuel of the proper grade?
NO
Fuel incorrect,stale,or contaminated; mixture incorrect.
Refill with clean fresh unleaded gasoline with a pump octane of 87 or higher,mixed with shindaiwa Premium 2-cycle mixing oil at a
50:1 gasoline/oil ratio.
YES
Is fuel visible and moving in the return line when priming?
YES
Is there spark at the spark plug wire terminal?
YES
Check the spark plug.
NO
Check for clogged fuel filter and/or vent.
Replace fuel filter or vent as required.Restart.
NO
Shorted ignition system.
Faulty ignition unit.
Consult with an authorized servicing dealer.
If the plug is wet,excess fuel may be in the cylinder.
Crank the engine with the plug removed, replace the plug,and re-start.
The plug is fouled or improperly gapped.
Clean and re-gap the plug to 0.024 inch
(0.6 mm). Re-start.
The plug is damaged internally or of the wrong size.
Replace the plug with a Champion CJ8 or equivalent type spark plug of the correct heat range.Re-start.
Is the engine overheating?
Engine is rough at all speeds.
May aiso have black smoke and/or unburned fuel at the exhaust.
Engine is knocking.
LOW POWER OUTPUT
Operator is overworking the unit.
Carburetor mixture is too lean.
Improper fuel ratio.
Shorten trimmer line.Cut at a slower rate.
Consult with an authorized servicing dealer.
Refill with clean fresh unleaded gasoline with a pump octane of 87 or higher.mixed with shindaiwa Premium 2-cycle mixing oil at a
50:1 gasoline/oil ratio.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Fan,fan cover,cylinder fins dirty or dameged.
Carbon deposits on the piston or in the muffler.
Clogged air filter.
Loose or damaged spark plug.
Clean or replace the air filter.
Tighten or replace the plug with a Champion
CJ8 or equivalent type spark plug of the correct heat range.Re-start.
Air leakage or clogged fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or diaphragm.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion chamber.
Repair or replace filter and/or fuel line.
Refill with fresh fuel/oil mixture.See Page 11.
Consult with an authorized servicing dealer.
See above.
Check fuel octane rating;check for presence of alcohol in the fuel.Refuel as necessary.
See page 11.
Consult with an authorized servicing dealer.
19
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Symptom
Poor acceleration.
Possible Cause
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Engine stops abruptly.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Remedy
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust:2,750( ± 250)RPM(r/min)
Reset the switch and re-start.
Refuel.See page 11.
Replace filter.
Drain;replace with clean fuel.See page 11.
Clean or replace spark plug with a Champion
CJ8 or equivalent type spark plug of correct heat range.Tighten the terminal.
Engine difficult to shut off.
Cutting attachment rotates at engine idle.
Excessive vibration.
Cutting attachment will not rotate.
Ignition failure.
Piston seizure.
Replace the ignition unit.
Ground(stop) wire is disconnected,or switch is defective.
Overheating due to incorrect spark plug.
Consult with an authorized servicing dealer.
Test and replace as required.
Replace spark plug with a Champion CJ8 or equivalent spark plug of the correct heat range.
Overheated engine.
Engine idle too high.
Idle engine until cool.
Set idle:2,750( ± 250)RPM(r/min).
Broken clutch spring or worn clutch spring boss.
Replace spring/shoes as required,check idle speed.
Loose attachment holder.
Inspect and re-tighten holders securely.
Warped or damaged cutting attachment.
Inspect and replace attachment as required.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Tighten gearcase securely.
Inspect and replace as necessary.
Shaft not installed in powerhead or gearcase.
Broken shaft.
Damaged gearcase.
Inspect and reinstall as required.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO, 198-8760, JAPAN
PHONE: 81-428-32-6118.FAX: 81-428-32-6145
20
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