Shindaiwa B45_B45LA User manual

Brand: Shindaiwa

Model: B45_B45LA

Category: Grass trimmers

Type: User manual

B45

B45/B45LA BRUSHCUTTER

B45LA

WARNING!

SHINDAIWA OWNER'S/OPERATOR'S MANUAL

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.

X750-015975

X750284-0005

1302D 1048 ES

Printed in Japan

Throughout this manual are special

attention statements.

WARNING!

A statement preceded by the

triangular attention symbol and the

word “WARNING” contains informa-

tion that should be acted upon to

prevent serious bodily injury.

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.

NOTE:

A statement preceded by the word “NOTE”

contains information that is handy to know

and may make your job easier.

Attention Statements

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.

Introduction

PAGE

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 exception-

ally high power from remarkably low

displacement and weight. As an owner/

operator, you’ll soon discover for your-

self why shindaiwa is simply in a class

by itself!

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.

Contents

Attention Statements .........................2

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

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.

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.

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!

WARNING!

Use Good Judgment

NEVER operate the engine when

transporting the unit.

NEVER operate the engine indoors!

Make sure there is always good ven-

tilation. 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 attach-

ments.

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 imme-

diately. Push the branch or tree to

ease the bind and free the blade.

Stay Alert

You must be physically and mentally ¿ t

to operate this unit safely.

General Safety Instructions

WARNING!

Never make unauthorized

attachment installations.

WARNING!

Never operate power equipment of

any kind if you are tired or if you

are under the inÀ uence of alcohol,

drugs, medication or any other

substance that could affect your

ability or judgement.

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 mufÀ 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 attach-

ment is properly installed and ¿ rmly

tightened before operation.

NEVER use a cracked or warped cutting

attachment. If a properly installed at-

tachment vibrates, replace the attach-

ment 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.

50'

FIG2B

FIG1B

The Properly Equipped Operator

Always wear a harness

when operating a unit

equipped with a blade.

Always operate with

both hands ¿ rmly

gripping the unit.

Wear close-¿ tting clothing to protect

legs and arms. Gloves offer added

protection and are strongly recom-

mended. 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!

Wear hearing protection devices and a

broad-brimmed hat or helmet.

Always wear eye protection

such as goggles or safety

glasses to shield against

thrown objects.

When operating with a blade, make sure the

handle is positioned to provide you with

maximum protection from contacting the blade.

Keep away from the rotating

trimmer line or blade at all

times, and never lift a moving

attachment above waist-high.

Wear appropriate footwear (non-

skid boots or shoes): do not wear

open-toed shoes or sandals.

Never work barefooted!

Keep a proper footing and

do not overreach.

Maintain your balance at

all times during operation.

Always make sure the appropriate

cutting attachment shield is correctly

installed and in good condition.

Figure 1

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.

Be constantly alert for objects and debris

that could be thrown either from the rotating

cutting attachment or bounced from a hard

surface.

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.

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.

FEET

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.

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.

Throttle Trigger

Gearcase

Brushcutter Blade

Outer Tube

Handlebar

Fuel

Tank

Cylinder

Cover

B45 BRUSHCUTTER

Cutting

Attachment

Shield

Hanger

Figure 4

Stand

Ignition

Switch

Spark

Plug

Model ................................................................................................................

Engine Model....................................................................................................

Dry weight without cutting attachment ..............................................................

Type ..................................................................................................................

Bore x Stroke ....................................................................................................

Displacement ....................................................................................................

Maximum Power Output ...................................................................................

Operating rpm Range .......................................................................................

Transmission Type............................................................................................

Fuel/Oil Ratio ....................................................................................................

Fuel Tank Capacity ...........................................................................................

Carburetion .......................................................................................................

Ignition ..............................................................................................................

Spark Plug ........................................................................................................

Air Cleaner........................................................................................................

Starting Method ................................................................................................

Stopping Method ..............................................................................................

Speci¿ cations

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.

Speci¿ cations subject to change without notice

IMPORTANT!

International B45/B45LA brushcutter units do not have the spark arrester installed in the mufÀ er. Before placing the

brushcutter in service, check local, state and federal regulations to determine if a spark arrester is required in your area.

B45 B45LA

SM45 Engine SB45LA Engine

17.6 lb./8.0kg 17.8 lb./8.1kg

2-cycle, vertical cylinder, air cooled

40mm x 33mm

41.5.cc/2.58 cu. in.

2.3 hp @ 7500 rpm (r/min)

5500–8500 rpm (r/min)

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

Foam element

Recoil

Toggle on-off switch, grounding type

Throttle Trigger

Gearcase

Brushcutter Blade

Outer Tube

Handlebar

Fuel

Tank

Cylinder

Cover

B45LA BRUSHCUTTER

Cutting

Attachment

Shield

Hanger

Stand

Ignition

Switch

Spark

Plug

WARNING!

Do not make unauthorized

modi¿ cations or alterations to this

unit or its components.

Assembly: Driveshaft/Powerhead B45LA

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 power-

head tube clamp.

3. Slide the outer tube assembly into

the powerhead tube clamp. See

Figure 5-B.

CAUTION!

Do not force the outer tube into the

powerhead! If the outer tube installa-

tion 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!

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.

B45LA Brushcutter

Clamp

Screws

Mainshaft

Powerhead

Tube

Clamp

Outer

Tube

Figure 5B

Decal

Stand

Spark

Plug

04503

Assembly: Driveshaft/Powerhead B45

1. Place the powerhead on a À at sur-

face, 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.

B45 Brushcutter

Powerhead

Fan Cover

Outer

Tube

Figure 5A

Stand

Spark

Plug

Hanger

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.

CAUTION!

Do not force the outer tube into the

powerhead! If the outer tube installa-

tion is dif¿ cult, rotate the outer tube or

mainshaft until you feel the mainshaft

splines engage inside the fan cover

housing.

Ignition Switch

03510

03509

03511

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.

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 as-

sembly 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.

Cable

Holder

Handlebar

Throttle Assembly

Outer Tube

Throttle Cable

Lower Clamp

Retaining Screws

Handlebar

Bracket

Handle Position

Label

Figure 7

Throttle

Lever

Figure 9

Figure 8

Cable End

Trigger

Retaining

Clip

Throttle

Cable

Lower

Clamp

Figure 9A

Hip

Protector

Install the Cutting Attachment Shield

35005

Cutting Attach-

ment Shield

Outer

Tube

Socket-

Head Cap

Screw

Bracket

Clamp

Screw

Retaining

Nut

CAUTION!

Make sure the clamp screw and

retaining nut are securely tightened

before tightening the four socket-

head cap screws.

7. Tighten the four socket-head cap

screws to secure the cutting attach-

ment shield.

Figure 6

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 us-

ing 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.

Flat

Washer

Gearcase

Line Cutter

WARNING!

NEVER operate the B45/B45LA

without the cutting attachment shield

installed and tightly secured!

Adjust Throttle Cable Free Play

1. Test the throttle lever for smooth op-

eration. 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 neces-

sary, 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.

7mm

Free

Play

B45/B45LA Brushcutter

Checking Free Play

Adjusting Free Play

Adjuster

Cover

Cable

Locknut

Cable

Adjuster

Figure 10

Figure 11

03516

Blade Selection

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 de-

signed 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.

WARNING!

Use only cutting attachments recom-

mended 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.

Assembly: Install the Blade

35011

35010

35013

35012

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!

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 insert-

ing 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 center-

ing the safety clip. See Figure 12-C.

6. Install holder “B” on the gearcase

shaft. See Figure 13.

Shaft Bolt

Bolt Guard

Holder “B”

Holder

“A”

Gearcase

Shaft

Slide the saftey clip off-center

Center the safety clipSlip the blade into place

Safety

Clip

Figure 12

Hex

Wrench

Never operate the brushcutter without

the safety clip installed and both hold-

ers tightly secured and À at against

the blade surface!

WARNING!

35015

35014

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.

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.

Install Holder

“B”

Saw Blade

Tighten the assembly

Combination Spark

Plug/Screwdriver

Wrench

Hex Wrench

Bolt Guard

Holder “B”

Figure 14

Figure 13

The B45/B45LA should now be

completely assembled.

Blade not shown for clarity

35008

35007

Assembly: Installing a Trimmer Head

Safety Clip

(not used)

Shaft Bolt

(not used)

Bolt Guard

(not used)

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!

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 insert-

ing the long end of the hex wrench

through both holes. See Figure 15-

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.

Gearcase

Shaft

Hex Wrench

Holder “B”

Holder “A”

Hand-tighten Trimmer Head

(counter-clockwise to install)

Figure 15

Mixing Fuel

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.

Filling the Fuel Tank

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 oper-

ate 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.

IMPORTANT!

Mix only enough fuel for your immedi-

ate 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™.

WARNING!

Minimize the risk of ¿ re!

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 mufÀ er!

Ŷ NEVER operate the engine

without the mufÀ er in place and

properly functioning!

5. Using the hex wrench to secure

Holder “A,” install and hand-tighten

the trimmer head (counter-clockwise

to install). See Figure 15-B.

6. Remove the hex wrench from the

gearcase and holder.

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.

Shoulder Level

4. Reinstall the fuel ¿ ller cap and tighten

¿ rmly.

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 rev-

ving the engine several times with the

throttle lever.

WARNING!

The cutting attachment will rotate as

the engine accelerates!

9. Operating the throttle will automati-

cally disengage the fast-idle setting.

If the engine does not start–

Repeat the appropriate starting pro-

cedures for a hot or cold engine. If the

engine still fails to start, use the follow-

ing procedure for “Starting a Flooded

Engine”. See page 12.

03523

03518

Starting the Engine

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.

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.

B45/B45LA Throttle Assembly

Throttle

Lever

Lock

Button

IMPORTANT!

The primer system only pushes fuel

through the carburetor and out the

overÀ ow tube. Repeatedly pressing the

primer bulb will not À ood the engine

with fuel.

Choke

Closed

Figure 16

Figure 17

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

overÀ ow tube. See Figure 17.

3. (Cold Engine Only) Choke the

engine by moving the choke lever

up towards the spark plug (choke

is closed). See Figure 18.

Figure 18

Primer

Bulb

OverÀ ow Tube

Primer

Lever

Figure 17A

Choke

Open

Make sure

the cutting

attachment

is clear of

obstructions!

Figure 19

Figure 20

WARNING!

Never start engine from the

operating position!

6. Open the choke by moving the choke

lever down (toward the fuel tank).

See Figure 20.

Stopping the engine

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 en-

gage. See Figure 19.

5. Start the trimmer by pulling the starter

handle upward rapidly.

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–

Idle the engine brieÀ y before stopping

(about 2 minutes), then push down on

the ignition switch to turn ignition “OFF”.

See Figure 21.

Figure 21

Ignition

OFF

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.

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 attach-

ment when the throttle is released.

WARNING!

The cutting attachment must NEVER

rotate at engine idle! if the idle speed

cannot be adjusted by the procee-

dure described here, have the unit

inspected at an authorized shindaiwa

dealer.

Figure 23

Idle

Adjusting Screw

Slow Air

Screw

Main Carburetor

Adjustment Screw

1. Place the unit on the ground, then

start the engine and allow it to idle

2-3 minutes until warm.

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).

Starting a Flooded Engine

1. Disconnect the spark plug lead, and

then use the spark plug wrench to

remove the spark plug (turn counter-

clockwise 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 proce-

dure, 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

counter-

clockwise to

remove

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.

Figure 22

A harness is

required for

use with

brushcutters

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 attach-

ment is parallel to the ground. Make

sure all hooks and adjustment devices

are secure.

Harness

WARNING!

Figure 24

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.

Idle Speed Adjustment

WARNING!

Ŷ Before working with a blade-

equipped 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.

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!

Brushcutter Handlebar

A brushcutter’s handlebar helps prevent

the operator from moving forward, or

the unit moving rearward, thus prevent-

ing inadvertent bodily contact with the

blade. ALWAYS KEEP THE HANDLE-

BAR SECURELY IN PLACE ON THE

UNIT!

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.

Using A Brushcutter Blade

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 making vertical cuts, never

allow the blade to exceed waist

height.

WARNING!

DO NOT use 2-tooth or NON-

shindaiwa approved 4-tooth cutting

blades with shindaiwa brushcutters.

Vertical cuts

Hold the brushcutter with the blade at a

90° angle to the ground so the blade’s

bottom edge rotates toward the opera-

tor. Move the blade from top to bottom

through the cut, and cut only with the

bottom edge of the blade. See Figure

26.

WARNING!

When cutting wood with a blade,

feed the blade slowly. Never strike or

“slam” a spinning blade against the

wood.

Cut on the left side of the blade.

KEEP YOUR BODY OUTSIDE THE

PATH OF BLADE ROTATION

Figure 26

Figure 25

Ten O’Clock

Seven

O’Clock

OK To Cut

Blade

Rotation

Five

O’Clock

35032

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!

Your shindaiwa B45/B45LA Brush-

cutter 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 clear-

ing weeds and light brush, features

three nylon blades attached to the

head by pivots.

CAUTION!

Do not push the rotating line into

trees, wire fences or any material

that could tangle or break line ends.

Cutting Grass

CAUTION!

Operation at low rpm can lead to

premature clutch failure.

Trimming and Mowing Grass

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.

Engine Operating Speeds

Operate at full throttle while cutting

grass.

Figure 27

03529

CUTTING

PATH

RETURN

PATH

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 oper-

ate properly with your unit and may

cause damage and lead to personal

injury.

NOTE:

Using non-standard replacement parts

could invalidate your shindaiwa warranty.

General Maintenance

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 interchange-

able 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.

MufÀ er

This unit must never be operated with

a faulty or missing mufÀ er. Make sure

the mufÀ er is well secured and in good

condition. A worn or damaged mufÀ er is

a ¿ re hazard and may also cause hear-

ing loss.

Spark Plug

Keep the spark plug and wire connec-

tions tight and clean.

Fasteners

Make sure nuts, bolts, and screws

(except carburetor adjusting screws)

are tight.

Air Cleaner

Element

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 mufÀ 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-Hour Maintenance

Clean the spark plug and check the

gap at the electrode.

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.

10/15-Hour Maintenance

35035

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 Cham-

pion 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.

0.024-inch

(0.6 mm)

Spark Plug

Turn

counter-

clockwise to

remove

Remove (3)

Screws

Figure 29

Figure 28

Inner

Screen

Outer

Screen

Clip

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.

Old

Grease

New

Grease

Gear

Shaft

Collar

Hooked

Wire

Fuel

Filter

Fuel

Line

Figure 31

Figure 30

Ŷ Use a hooked wire to extract the fuel

¿ lter from inside the fuel tank. Re-

move 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.

Ŷ Remove the cutting attachment, hold-

er 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 lithium-

base grease such as shindaiwa

Gearcase Lubricant or equivalent.

See Figure 30.

MufÀ er

Spark Arrester Screen

MufÀ er Cowl (secured by 2

socket-head capscrews)

Spark Arrester Installation and Service B45LA

WARNING!

Never operate the unit with a dam-

aged or missing mufÀ er! Operating

with missing or damaged exhaust

components is a ¿ re hazard and

could also damage your hearing.

1. Obtain a spark arrester from a

shindaiwa dealer.

2. Remove the 2 socket-head cap-

screws retaining the mufÀ 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.

Socket-head

Capscrews

Figure 32B

IMPORTANT!

If carbon deposits are severe or if no

performance improvement is noted, this

unit should be inspected by an autho-

rized shindaiwa servicing dealer.

NOTE:

The screen is held in place by a press ¿ t

on the mufÀ er exhaust outet.

4. Reinstall the mufÀ er cowl and tighten

the 2 socket-head capscrews se-

curely.

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.

45038

MufÀ er

Spark Arrester Screen

MufÀ er Cowl (secured by 3

socket-head capscrews)

Spark Arrester Installation and Service B45

WARNING!

Never operate the unit with a dam-

aged or missing mufÀ er! Operating

with missing or damaged exhaust

components is a ¿ re hazard and

could also damage your hearing.

1. Obtain a spark arrester from a

shindaiwa dealer.

2. Remove the 3 socket-head cap-

screws retaining the mufÀ 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.

Socket-head

Capscrews

Figure 32A

IMPORTANT!

If carbon deposits are severe or if no

performance improvement is noted, this

unit should be inspected by an autho-

rized shindaiwa servicing dealer.

NOTE:

The screen is held in place by a press ¿ t

on the mufÀ er exhaust outet.

4. Reinstall the mufÀ er cowl and tighten

the 3 socket-head capscrews se-

curely.

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!

International brushcutter units do not

have the spark arrester installed in the

mufÀ er. Before placing the brushcutter

in service, check local, state and federal

regulations to determine if a spark ar-

rester is required in your area.

CAUTION!

Gasoline stored in the carburetor

for extended periods can cause

hard starting, and could also lead to

increased service and maintenance

costs.

Blade Sharpening

Long Term Storage

Whenever the unit will not be used for

30 days or longer, use the following pro-

cedures 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™.

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.

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

30°

Round File

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.

WARNING!

Ŷ Remove the spark plug and pour

about 1/4 ounce of 2-cycle mix-

ing 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. Rein-

stall 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 reas-

semble the element.

Ŷ Store the unit in a clean, dust-free

area.

Figure 34

Figure 33

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.

Check fuel octane rating;check for presence of

alcohol in the fuel.Refuel as necessary.

See page 11.

Consult with an authorized servicing dealer.

Operator is overworking the unit.

Carburetor mixture is too lean.

Improper fuel ratio.

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.

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.

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.

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.

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.

Troubleshooting Guide

ENGINE DOES NOT START

LOW POWER OUTPUT

Does the engine crank?

Faulty recoil starter.

Fluid in the crankcase.

Internal damage.

Consult with an authorized

servicing dealer.

Consult with an authorized servicing dealer.

Good compression?

Loose spark plug.Excess wear on

cylinder,piston,rings.

Tighten and retest.

YES

Does the tank contain fresh

fuel of the proper grade?

Fuel incorrect,stale,or contaminated;

mixture incorrect.

YES

Is fuel visible and moving in

the return line when priming?

Is there spark at the spark

plug wire terminal?

Shorted ignition system.

Faulty ignition unit.

YES

Check the spark plug.

If the plug is wet,excess fuel may be in

the cylinder.

The plug is fouled or improperly gapped.

The plug is damaged internally or of the

wrong size.

Crank the engine with the plug removed,

replace the plug,and re-start.

Clean and re-gap the plug to 0.024 inch

(0.6 mm). Re-start.

Replace the plug with a Champion CJ8 or

equivalent type spark plug of the correct

heat range.Re-start.

YES

What To Check

Possible Cause Remedy

Check for clogged fuel filter and/or vent.

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.

Replace fuel filter or vent as required.Restart.

Consult with an authorized servicing dealer.

Troubleshooting Guide (continued)

ADDITIONAL PROBLEMS

Poor acceleration.

Symptom Possible Cause

Remedy

Engine stops abruptly.

Ground(stop) wire is disconnected,or

switch is defective.

Overheating due to incorrect spark plug.

Overheated engine.

Test and replace as required.

Replace spark plug with a Champion CJ8 or

equivalent spark plug of the correct heat

range.

Idle engine until cool.

Cutting attachment rotates at

engine idle.

Engine idle too high.

Broken clutch spring or worn clutch

spring boss.

Loose attachment holder.

Set idle:2,750( 250)RPM(r/min).

Replace spring/shoes as required,check idle

speed.

Inspect and re-tighten holders securely.

Excessive vibration.

Warped or damaged cutting attachment.

Loose gearcase.

Bent main shaft/worn or damaged

bushings.

Inspect and replace attachment as required.

Tighten gearcase securely.

Inspect and replace as necessary.

Cutting attachment will not

rotate.

Shaft not installed in powerhead or

gearcase.

Broken shaft.

Damaged gearcase.

Inspect and reinstall as required.

Consult with an authorized servicing dealer.

Engine difficult to shut off.

Clogged fuel filter.

Water in the fuel.

Shorted spark plug or loose terminal.

Ignition failure.

Piston seizure.

Switch turned off.

Fuel tank empty.

Clogged air filter.

Clogged fuel filter.

Lean fuel/air mixture.

Idle speed set too low.

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.

Replace the ignition unit.

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

Shindaiwa B45_B45LA User manual

Brand: Shindaiwa

Model: B45_B45LA

Category: Grass trimmers

Type: User manual

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