Atom 102 Operator Owner's Manual

ATOM

LAWN

EDGER

PRO

GASOLINE MODEL

102

OPERATOR/OWNER

MANUAL

Patents

Granted in Australia

& USA

Design

Registrations

Granted in Australia,

USA,

Japan, Great

Britain

Assembling

0

Safety Precautions

o Operating

Instructions

t Maintenance

IMPROPER

USE
CAN CAUSE
SERIOUS

INJURY

MAKE

SURE THIS

MANUAL

IS

READ
AND

CAREFULLY
UNDERSTOOD
BEFORE

STARTING

OR

OPERATING

THIS

EQUIPMENT

1ST

EDITION

IMPORTANT MANUAL

-

DO NOT

THROW AWAY

Manual

always

to be available

for reference

or instructing

new

operators.

SUPERVISORS THIS

IS YOUR

RESPONSBILIW

I

CONTENTS
Parts

and Controls

....

..3

Safety Precautions ..........

......

...........

4

Assembling the Lawn

Ed9er..............

8

Fuel Mix and Fuelling

............ ...........9

Starting and Stopping......

...........

10

Operating 1nstructions

.....................

12

Maintenance Instructions.. ...............

I 4

Air filter maintenance .....................

1 4

Carburettor adjustment...

................

1 5

Cutter

Blade Replacement......... .....'16

Lubrication of Gears...... ................. 17

Checking

the spark

plugs

......,......... 1 7

Checking muff|er......... ...... ............

17

Trouble Shooting.......... .... .............

1 8

Parts List......

..........18/19

INTRODUCTION

This Manual contains

operating, as-

sembling,

safety, and maintenance,

instructions for the Atom

Lawn

Edger.
Pay special attention to the safety

precautions

outlined on

pages

4

to

7. Allow only

persons

who under­stand this Manual to operate the
Lawn Edger. This lawn edger

is not

to

be

used for

any

purpose

other

than

for edging lawns.

To receive

maximum

performance

and

satisfaction

from

this

Lawn

Edger, rt is

important

that

you

read

and

under-

stand

the maintenance

and

safety

pre-

cautions

before

using

the

edger

Contact

your

Atom

dealer

or the

Atom

distributor

for

your

area if

you

do

not

understand

or cannot

carry out

any of

the instructions

in this Manual.

ATOM'S

philosophy

is to continu-

ally improve all ol its

products.

As a

resull,

engineoring changes and

im-

provoments

are fnade from

time-to-

time. lf the operaling

characteristics

or lhe

app€arance of

your

lawn

edger differs lrorn lhose

described

in this Manual,

ploase

contact

your

ATOM dealor for irrformation

and

assistance.
ATOM ressrvos lhr: right to

make

changes al

any

lirnc

wilhnul nolice.

1,2

The handles of the Lawn
Edger held by

both

hands.

3. The

throttle trigger which in­creases speed of engine for
automatic safety clutch to en­gage

and thus rotate

blade.

4. Starter

grip

the

grip

of the

pull

starter

which is the device to

start the engine.

5. ON/OFF

switch.

6. Handle nut for

holding handles

onto

housing

(and

adjusting

anti-vibration

of handle).

7.

Height adjustment

for adjust-

ing

depth of cutting blade.

Blade cover reduces

the risk

of flying

debris and direct con-

tact

with the feet or hands.
Cutter blade rotates when en­gine

speed is increased

above

idle.

10.

/

Wheel for moving and

guiding
edger.
Grass shield reduces flyback
of stones and foreign material.
Fuel cap for sealing the fuel

tank filler.

13. Choke lever for cold engine
starting.

14. Filter housing

covers the air

filter

element.

15. Fuel

pump pramer provides

additional fuel for a cold start.

16. Spark

Plug

terminal connects

the spark

plug

to the ignition

wire.

17. Muffler reduces exhaust
noises and diverts exhaust
gases

away from operator.

I

12.

PARTS AND CONTROLS

10
1't.

12.

8.

9.

A

WARNING

As

with any

power

lool some

spe-

cial

safely

precautions

must

be ob-

served to reduce

the risk of

per-

sonal injury. Careless

or improper

use may

cause serious or

even

fatal injury.

SAFETY WARNINGS

HE PURPOSE OF SAFETY

WARNINGS AND

NOTES IN TIlIS MANTJAL IS

T

TTRACT YOUR

ATTENTION TO POSSIBLE

DANGEIIS AND

THE

XPLANATIONS

WITH THEM DESERVE YOUR CAREFUL

ATTENTION AN

UNDERSTANDING THE

SAFETY WARNINGS IN

THIS MANUAL AND ON

THE

LAWN EDGER DO NOT, BY THEMSELVES,

ELIMINATE ANY

DANGER. THE

INSTRUCTIONS OR WARNINGS THEY

GIVE ARE NOT

SUBSTITUTES FOR

PROPER

ACCIDENT PREVENTION MEASURES

WARNING: Failure

to obey a safety

warning

can result

in

injury to

yourself

and

others.

NOTE:

Advises

you

of information

or instructions

vital to the

!

operation or

maintenance

of the equipment.

-11. FIG 2

SAFETY

PRECAUTIONS

Like any

power

tool the use of any

lawn edger may be

dangerous. lt is

important

that

you

read, fully under-

stand,

and observe the following

safety

precautions

and warnings.

Re-read this operator's

manual and

the safety instructions

periodically.

THE

OPERATOR

Physical

Condition

Operator must be in

good

physical

condition and mental health

and

not

under the influence of any sub-

stance

(drugs,

alcohol, etc.) which

might impair vision,

dexterity or

judgement

[Fig.

3a].

Do not operate a lawn edger when
fatigued. Be alert - if

you get

tired

while operating the machine,

take a

break. Tiredness may result

in loss

of

control. Working with

any

power

tool can

be strenuous. lf

you

have

any

condition that

might be aggra-

vated by strenuous

work, check

with

your

doctor

before operating

the machine.
The Atom

Lawn Edger is equipped

with

vibration reducing

hand

grips

and

main handle

anti-vibration

mountings. These

are designed to

reduce

the transmission

of engine

vibrations to

the operator's hands.

Replace

hand

grips

and mountings

when

worn or damaged.

The rubber handles

do not

guaran-

tee that

you

will not sustain

whitefinger

disease or carpal

tunnel

syndrome. Therefore,

continual and

regular

users should

monitor

closely

the conditions of

their hands

and

fingers. lf any of

the above

symptoms

appear,

seek medical

advice

immediately.

Proper

Clothing

Clothing

must be sturdy

and snug-

fitting,

but allow complete

freedom

of

movement

/see

Fig. 41. Avoid

loose-fitting

jackets,

flared or

cuffed

pants,

or

anything

that could trip the

operator.

Wear

overalls or

long

pants

to

protect

your

legs.

Do not

wear shorts.

Use of

gloves

when

working

with the

lawn edger is

rec-

ommended.

Good

footing is

most

important.

Wear

sturdy shoes

with

nonslip soles.

Do not

wear san-

dals or operate

with

bare feet. In

hot or

sunny conditions

always

wear

a hat and long sleeve

shirt

for

protection

against

skin cancers.

Use of a

good

brand of

sunscreen

cream is

also recommended

on

exposed

skin surfaces.

Replace

immediately

broken

or

cracked

blade covers

and

grass

debris deflector.

Never

operate a lawn edger

unless

wearing

goggles

or

properly

fitted

safety

glasses

with adequate

top

and

side

protection

which

comply

with ANZI 287.1

(or your

applicable

national

standard).

Engine

noise may damage

your

hearing.

Wear sound barriers

(ear

plugs

or ear

mufflers) to

protect

your

hearing.

Continual and regular

users

should have their

hearing

checked

regularly.

SAFETY

PRECAUTIONS

(cont'd

rt

Uf

tl

&

FIG

'f

-n-

O

A

WARNING

Careless or improper use

of the

machine

may cause serious injury.

Have

your

Dealer show

you

how to

operate

your

lawn edger.

Safe use of

a Lawn Edger in-

volves

1. the

operator

2. the

lawn edger

3. the

use of the lawn edger

A

WARNING

The lawn

edger must not be oper-

ated by minors. Bystanders,

espe-

cially children

and animals, should

not be allowed in the

area where a

machine is in use

(at

least

15

me-

tres

away).

Never let the unit run

unattended

[Fig.

3b].

FIG 3a

FIG 3b

A

WARNING

Proper

eye

protection

is

a must.

The blade cover

may not

protect

the operator from

all fast moving

foreign objects

even though

the

discharge

is directed away

from the

operator,

as ricochets

and bounce-

backs may occur

during lawn edg-

ing operations.

A

WARNING

Do not lend,

rent or sell this

machine without

this operator's

manual.

Be sure that

anyone us-

ing this unit

understands the in-

formation contained

in this man-

ual before

use.

A

WARNING

Prolonged use of any hand held
powered

machine exposing the op-

erator to vibrations

may

produce

whitefinger disease

(Raynaud's

phenomenon)

or carpal tunnel

syn-

drome. These conditions reduce

the hand's

ability to feel and

regu-

late temperature,

produce

numb-

ness and burning

sensations and

may cause nerve

and circulation

amage and tissue

necrosis.

SAFEW

PRECAUTIONS

(cont'd

Fueling

This

Atom unit uses an
oil-gasoline mixture for
fuel

(see

the chapter on

"Fuel").

@

FIG 5

SAFETY PRECAUTIONS

(cont'd)

Fueling instructions
Refuel outdoors only. Always

switch off the engine and allow it to
cool before refueling. Relieve

fuel

tank

pressure

by loosening fuel cap

slowly. Never remove fuel filler cap

while

engine is running.

Select bare

ground

for fueling and

move at least 10 feet

(3m)

from

the

fueling

spot before starting the en-

gine.

Wipe off any spilled fuel be-

fore starting

your

lawn edger and

check for leakage.

Always tighten fuel filler cap se-

curely after fueling.

Starting
You should

always inspect

your

unit

before

starting

it. Make sure

the

controls

and safety devices

are

working

properly.

As the throttle trigger is

fitted with a

% throttle lock to

assist in starting

the engine, never

leave lz throttle

lock

on other

than for starting.

For

specific starting instructions,

see the appropriate section of

this

operators manual.

Place the ma-

chine on

firm

ground

or other solid
surface in an open area. Maintain
good

balance and secure footing.

Failure to follow this

procedure

may

result

in

injury

to hand or fingers or

may damage the starter mecha-

nism.

Working instructions

and impor-

tant adjustments

Never

operate

your

machine if it is

damaged, improperly

adjusted or

not completely

and securely as-

sembled.

At correct idle

speed the

blade

should not

turn. Do not use

lawn

edger with

incorrect idle speed

adjustment.

Adjust the speed

your-

self

(Page

75)

setting Carburettor

ldle Speed

Adjustment,

or by a

service

dealer.

MAINTENANCE,

REPAIR

AND

STORING

Use

only original

Atom replace-

ment

parts

for maintenance

and

repair. Use

of

parts

manufactured

by others

will void

warranty, and/or

may

cause

serious or fatal injury.

Follow the

maintenance instruc-

tions in the

appropriate section of

this

manual. Any repairs should

be

carried out by

an authorised service

dealer.
Check

fuel filler cap for leaks

at

regular intervals. Use the

specified

spark

plug

and

make sure it and the

ignition lead

are always in

good

condition.
Remember that the risk of forest

or

grass

fires is

greater

in

hot weather.

A

WARNING

Never touch a hot muffler or burn
will result.

Keep

spark

plug

and wire connec-

tion tight

and

clean.

Spark

plug

electrode

gap

should be checked

with a feeler

gauge

at least every

50 operating

hours and reset if nec-

essary. Fit

a new spark

plug

if elec-

trodes

are badly

pitted

or fouled

with carbon build up.
Store lawn

edger in a dry, high or

locked

location

place

and out of

reach

of children.

A

WARNING

Start and

operate

your

unit

out-

doors in a ventilated

area.

A

WARNING

Gasoline

(petrol)

is an extremely

flammable

and explosive fuel. Use
extreme caution when handling
gasoline

or fuel mix. Do not smoke

or bring any

fire or flame near the

fuel.

WARNING

The lawn edger is

a one-person

machine. To reduce the risk of

eye

or other injury

from thrown objects,

ensure that

bystanders are at

least

15 feet

(5m)

away

during use. Re-

place

immediately

any worn or bro­ken debris deflector shield or blade
cover. lf approached, release

throt-

tle trigger to immediately

de-

accelerate the engine.

A

WARNING

Always stop

the motor and

make

sure that

the blade

is stopped be-

fore

adjusting

blade height, doing

any maintenance

or repair

work,

cleaning

the unit or

removing

grass

or debris

from the blade.

WARNING

Always allow engine to cool before

refuelling. Accidental

spillage of

gasoline

over hot engine could

cause fire or explosion

to occur with

consequent

possible

disfigurement

or fatal injury. Wash and clean

hands after fueling.

A

WARNING

When

you pull

starter

grip,

do not

p

starter rope around

your

hand.

Do

not allow

grip

to snap back, but

guide

starter rope slowly back to

permit

rope to rewind

properly.

l\

wARNTNG

A worn or

damaged

muffler is a fire

hazard

and may cause

loss of hear-

ing. Check

to see

that the

muffler is

in

good

condition.

The lawn edger

must not be

operated if the

muffler

is not functioning

properly,

is

dam-

aged,

or has

been removed. In

order

to reduce

the risk of fire, do

not

modify or

remove any

part

of

the

muffler.

7

A

WARNING

Never store

the machine with

gaso-

line inside

a building where fumes

may reach

an open flame or spark,

e.g.

gas

or oil fired heater appli-

ance.

electric

motor

etc.

I

SAFETY

PRECAUTIONS

(cont'd)

Before storing

for a longer

period,

always empty

the fueltank.

Keep the

space behind

and beside

the engine

clear at all times to allow

for the escape

of hot and toxic

exhaust fumes.
Operate

your

machine

under

good

visibility

and daylight conditions

only. Work carefully.

Working Conditions

When

working with the lawn

edger

always

wrap

your

fingers tightly

around each

handle. Keep

your

hands in this

position

to have

your

machine under

control at all times.

never

attempt to operate lawn

edger with

one hand as loss of

control may result

in serious or fatal

injury.
Make sure

the handle

grips

are in

good

condition and free of

mois-

ture,

pitch,

oil or

grease.Use

both

hands,

one on each handle, to op-

erate

and control the lawn edger.

Do not overreach.

Keep

proper

footing

& balance at alltimes.

A

WARNING

Do not touch hot motor during and
immediately after use as

you

may

burn

yourself.

Fuel Mix
Prepare

the mixture of

a brand-

name

unleaded

gasoline

and

qual-

ity two-stroke

(2

cycle) engine

oil in

an

approved safety-type

canister.

Pour in

the oil first

(eg.

Castrol 2T

two stroke

oil or equivalent)

and

then add

gasoline.

Do not

use BIA

or

TCW

(two

cycle

water cooled)

mix oils.

Well

known brands of

2 stroke

(2

cycle) engine

oil are recommended.

They are formulated

specially

for 2

cycle engines

and

guarantees

a

long

engine life.

For

the

sake

of

your

health

and the

environment

unleaded

gasoline

is

recommended.

A

WARNING

Pressure

may build

up in

the canis-

ter. Remove

fuel

cap slowly

to

avoid

injury from

fuel

spray.

Re-

place

fuel cap securely.

Clean

the fuel

tank and

can

from time to time.

Take

care when handling

gasoline.

Avoid direct

contact

with the

skin

and avoid

inhaling

fuelvaPor.

Change

fuel

pickup

filter

at least

once

every

year

or more

frequently

depending

on use.

Before fueling,

clean

the filler

cap

and the

area around

it to

ensure

that no dirt

falls into

the tank. Never

mix

the

gasoline

and

oil in the

fuel

tank

of the engine.

Always

allow engine

to cool

before

refuelling.

Accidental

spillage

of

gasoline

over a hot

engine

could

cause fire

or explosion

to occur.See

Page 6 Safety

Precautions

Fu-

elling.
Fill or

add fuel to

the tank

only

when the

edger is

in a horizontal

position

as shown

(Fig.

7). ALLOW

engine to

cool down

for at least 5

minutes

before adding

fuel.

FIG 6

FUEL

MIX

AND FUELING

ASSEMBLING THE LAWN EDGER

Fit cross

brace to handles with brace to touch

ground.

Use 4 screws

and 4

locknuts

provided

in

packet

[see

A].

Fit handle assembly

to edger. Insert

150mm

(6")

bolt

(B).

Screw large 3 wing nut

(C)

so

that bolt end is

approximately flush

(level)

with face of centre boss of large

wing nut. This

allows handle

"platform"

to

"float"

without vibration. DO

NOT OVER-

TIGHTEN

BOLT.

Fit throttle to right

hand handle

[see

D]. Clip

in

throttle cable/ignition

switch

wire with 2 cable clamps attached to handle

[see

El

A

WARNING

Electrical

shock. Never touch

electrical

wires or components

while

the engine is running. They

are sources of high

voltage & can

give you

an electrical shock. Re-

place

immediately any faulty high

tension lead or spark

plug

cap.

25:lMixChart

Gasoline L 1

z

3

4

2-cvcle

oil ML 4 80

120 160 200

Recommended Mixing

Ratio

Term

Gasoline

:Oil

Up

to 20 hours use

20 .1

After 20 hours use

25 .1

STARTING & STOPPING

INSTRUCTIONS

STARTING & STOPPING

INSTRUCTIONS

(cont'd

Inferior

quality gasolines

or oils

may

damage

the engine, sealing

rings,

fuel

lines or fuel tank, and

6sgulsttor.

Also causes rough and

irregular

running and starting.

Only

mix

sufficient fuel for a few

weeks

work - store in approved

safety-lype

canisters.

Pour

oil in

first.
Screw

fhe

fuel can cap on tightlY

and

thdroughly

shake the mixture

before

fueling

your

machine.

FIG 7

1. Pla6e

lawn edger on

ground

in

horizontal

position

lsee

Fig. 91.

gs

sure the ignition switch is

'g$".

Pull switch toward opera-

1s1

to

turn

ON.

Switch located

on

fight

side of trigger

fsee

Fig.

81.

2.

Set trigger throttle to 112

THROTTLE LOCK by

placing

hand

on handle

grip

and

push-

ing down safety interlock

with

thumb,

and

pulling

up and hold-

ing trigger

with finger. Then

move thumb to hold in 112

throttle button, release

trigger,

then release

1/2 throttle button.

Trigger

throttle is then engaged

at

half speed for starting

(only).

'l'

It

I

FIG 9a

3. COLD START:

Move choke

lever up to start

position.

Press

and release

primer

3 or 4 times

untilthe fuelflows

into the clear

tube. Place

one foot on the

cross

brace.

FIG 9b

Make sure

you

have a firm
footing. Hold down motor with
left hand and with right hand

pull

the starter

grip

slowly until

you

feel

it

engage - and then

give

it a fast

pull

[Fig.

9]. Do not

pull

out starler rope more than

26"

(65cm)

-

it might break.

Stand between handles to start.
Do not let starter

grip

snap

back.

Guide it back slowly so
that the starter rope can rewind
slowly.

PULL THE STARTER ROPE
BRISKLY

until

you

hear the

engine

sound like it wants to

run or runs then stops

(normally

1-5

pulls).

Open choke

gradually

to allow

motor to run.
lf it stops,

re-start and allow the

engine

to run for a few more
seconds on lz lhrollle lock
(engine

runs fast). Pull throttle

trigger

(releases

%

throttle
lock), & allow throttle trigger to
slowly

pull

back to engine idle.

Note: ln warm temperature or
hot motor fhis sfep may not be
necessary.

HOT OR WARM START:
(Engine

has already been
started and warmed up). Switch
ignition "ON". Set 1/2

THROT-

TLE

LOCK

[Fig.

8]. Pullstarter

until

motor runs and let it run for
a few seconds before releasing
% THROTTLE LOCK. This

aI.
lows cooler fuel to enter the
carburettor.

Allow throttle trig-

ger

to slowly

pull

back to idle.

Note: A built-in automatic cen­trifugal clutch disengages the
blade

from rotating at engine

idle speed.

The clutch engages

the blade

when the engine

speed is increased.

Throttle

trigger

(engine

accel-

erator control)

is operated by

pushing

down interlock with

thumb

and

pulling

on trigger

[Fis

8].

FLOODED ENGINE:

(Engine

will not staft).

lf smoke or fuel

comes from

exhaust and en-

gine

will not start.

i. Check

that ignition switch is

"ON',

CHOKE LEVER is on

RUN

position,

throttle is set

on HALF THROTTLE

LOCK

position.

ii. Pull

starter rope up to

10

times to

clear engine of fuel

so it can start.

iii. lf

engine has excessive

fuel

that cannot be cleared

by i &

ii

above,

remove spark

plug

from

engine and from spark

plug

terminal,

crank engine

to clear excess

fuel, wipe

and

dry spark

plug

of all

fuel, re-install

spark

plug

and terminal, and restart

as

above.

IMPORTANT:

After t hours

use tighten

all screws

(especially

9 screws

around

gear

case), check

every 20

hours use.

10.

To stop motor

push

switch slide

on throttle trigger

side forward.

8.

il

I

il

I

4.

5.

1.

7.

A

WARNING

The blade

will rotate when engine

is

idling

fast

(eg.

on

starting

(1/2

throt-

tle lock]

or when motor is cold).

TO

STOP MOTOR move

ignition

switch

up into the

"OFF"

position

fpage

10 Fig.

8].

lqxtrtoN

,r

swr'cH.{

I

l0

ll

Anti-Vibration

(AV)

Adjustment

Handle nut

can

be

tightened

to
mark on knob to obtain best AV
affect to reduce handle vibrations.

During

break-in

period

A factory new machine should not
be run at high revs

(full

throttle)
without any load. This avoids un­necessary wear during the break-in
period.

As all

moving

parts

have to

bed in during break-in

period,

fric­tional resistances in the engine are
greater

during this

period.

Engine

develops its maximum

power

after

about 5 to 15 tank fillings.
When using, increase engine revs

as load is increased on lawn edger.
When lawn edger is under

full load,

full throttle is to be

used.

After finishing work
Storing for short

period

-

keep

the unit in a dry

place

until

you

need it again. Do not

store where

naked flame or electrical

machinery

is operating.
Storing for a long

period

-

drain

the

fuel tank, run engine until car-

burettor is

dry.

EDGING

OF

LAWN

The edger is very easy and
simple to use, and most opera­tors can immediately

adapt to

its unique

use.

For some

people

it may take a
few edgings to become accus­tomed to its operation.

Thoroughly inspect

the area
where the edger is to be used
and remove all stones, sticks,
wires and other foreign objects.

1.

2.

OPERATING

INSTRUCTIONS

3. Adjust blade

height. With a new

blade try second hole closest to

oPerator'

HETcHTADJUsTMENT

FIG

10

With both arms fully extended
downwards

(see

illustration

on

front cover)

hold both handle

grips

firmly.

With the engine

running

pull

the throttle trigger

to increase

engine speed.

lf blade is not deep enough,

or

is digging too

deep, adjust

blade height or

slightly raise or

lower

handles to suit depth

re-

quired

[Fig.

11]. However

it is

always more comfortable

and

relaxed to have arms

fully ex-

tended

downwards.

As

cutting

action begins,

push

the lawn edger forward so

that

the blade can cut the edge

as

you

move forward.

OPERATING

INSTRUCTIONS

(cont'd)

7.

Continue at a moderate

pace

10. Clutch.

The lawn edger

is

equipped

with a centrifugal

clutch. DO

NOT run edger at

low

speeds or if blade

jammed

at high speeds

as clutch

shoes will

prematurely

wear

out and cause damage.

FIG 12

l\

wARNTNG

Only operate unit when moving for­ward. DO NOT operate

walking

backwards as

you

may trip, fall and

injure

yourself.

A

WARNING

To avoid

personal

injury, never

carry the

edger while the engine is
running. Stay clear of the rotating
blade.

Stop the engine

prior

to mak-

ing adjustments

and

cleaning.

l3

8.

until

you

are familiar with the

controls

and the handling of the

lawn edger.
lf blade

jams

or stops in

ground,

lower handles,

or

pull
back unit and recommence.
Control engine and cutting
speed to suit work

being done.

When cutting efficiently,

engine

speed

should be full throttle

under load.
SidewaysTilting

: Lower either

left

or right

hand to achieve

9.

4.

5.

6.

angle

cutting.

To

edge

deePer

lift

handles

FIG

11

t2

MAINTENANCE

the filter to spread

the oil and

to

remove

excess oil

[Fig.

16].

Reinstall the

filter air filter

cover.

Note: lf

the unit is

operated

with

a dry or dirty

filter or with-

out

the air filter

and/or carburet-

tor/air filter cover,

you

will void

wananty.

Note: Fuel

Filter. When

the mo-

tor runs

short of fuel

supply

and

the tank has

gasoline

in

it,

check the

fuel filter for

block-

age.

CARBURETTOR

ADJUST-

MENT

This unit

is equipped

with a

diaphragm-type

slide

carburetor

that

has been carefully

calibrated

at

the factory.

In most cases

no fur-

ther

adjustment will

be required.

The condition

of the

air filter is

important to

the operation

of the

edger.

A dirty air

filter will restrict

the air flow, which

upsets the

fuel-

air mixture in

the carburettor.

The

resulting

symptoms are

often

mis-

taken

for

an

out-of-adjustment

car-

burettor.

Therefore. check

the con-

dition of

the air filter

before adjust-

ing

the carburettor.

lf the following

conditions

are expe-

rienced,

it may

be necessary

to

adjust the carburettor:
o

The motor

will not idle.

.

The

motor hesitates or stalls on

acceleration.

.

The loss of motor

power

that is

not corrected

by cleaning the

air filter

and muffler.

AIR FILTER

MAINTENANCE

Note: Clean and re-oil the

air filter

Every 5 hours of operation

or daily.

The air filter is

one of the most

important areas

to maintain. lf it is

not maintained,

you

will void

the

warranty.

Before cleaning,

make

sure

the unit is turned off.

FIG 16

Wash the

filter in detergent

and

waler

[Fig.

75l. Rinse

the filter

thoroughly

and allow

it to dry.

Apply enough

clean two-stroke

oil or SAE

30 oil to saturate

the

filter when

squeezed.

Squeeze

1.

2.

l4

MAINTENANCE

(cont'd)

.

The

motor

operates in an er-

ratic

or

fuel-rich condition

(indicated

by

excessive ex-

haust

smoke from

the muffler).

Note: Careless adjustments

can seriously

damage

the car-

bureftor

and/or motor.

ADJUSTING THE CARBU­RETTOR

1.

Clean air and fuel filter

if

it is
dirty. Refer to Air Filter Mainte­nance

(Page

74). Throttle trig-

ger

to be in idle

position.

Fuel Filter: When the motor
runs short

of fuel supply and

the tank has

gasoline

in it,

clean the fuel filter for blockage

[Fis.

17]

2. Throttle Cable: The

normal

play

is 1-2mm

when measured

at the carburetor

side. Re-

adjust with

the

cable

adjustor

as required.

3. Engine ldling

Setting: To in­crease motor idle speed, turn
clockwise ldle screw

(

) [Fig.

191 lo decrease

motor idle
speed, turn counter(anti)­clockwise.

Note:

Edger

blade not to rotate

when motor is idling.

Note: Throttle cable wire is not

to be

pulled

tight

(against

trig-

ger

throttle). Trigger.to have
small initial movement before it
pulls

cable and carby throttle

lever.

Note: Forcing the high speed

mixture screw

(B) (with

screw­driver) will damage the screw
tip and the seat in the carburet­tor body.

Close high speed

jet
and open 2.5 turns ! 1/2 turn
[Fis

1e].

Set 1/2 throttle lock

[Fig.

I

page

70l. Start the motor and let it

run for

a few

seconds-

Release 1/2 throttle lock and let
the

motor idle.

lf the

motor

stops, turn the idle screw

(A)
clockwise 1/8 turn at a time
(as

required) until the motor
idles. lf idle speed it too high
turn

idle screw

(A)

counter

(anti)-clockwise.

3.

4.

FIG 17

MAINTENANCE

(cont'd)

5. High Speed Screw Mixture
Adjustment:

The factory

presets

the high

speed mixture screw

(B)

at

2.112 t 1/2 turns out from the
closed

position.

Your unit

should

perform

well at this set-

ting. lf additional adjustment

of

the high speed mixture is

re-

quired,

contact

your

local au-

thorized service dealer.

Note: The edger blade

should

not

rotate when the motor idles.

Note: lf the carburettor adjust­ments

do not help the unit to

run

properly,

contact

your

au-

thorized service dealer.

Recom­mended idle speed is 3000 to
3200 RPM.

BLADE REPLACEMENT

1. Stop motor. Clean area around
dust cover and

pry

out with

screwdriver

[Fig.20].

2. Through dust cover hole

place
14mm single socket spanner.
On blade end

of shaft

place
17mm spanner on blade nut
[Fig.

21].

3.

Unscrew nut counter(anti)­clockwise

(normal

right

hand
thread).

4. Remove one smallwasher,

one

large washer and blade.

Before

fitting blade and

washers, clean

all

grit

and

grease.

Assemble

these

parts

clean and dry.

Fit

large washer, new blade

with

flat blade on inside,

large

washer, one small

washer, and

nul

[Fig.23l.

Tighten nut.

A

WARNING

Use only

Atom blades

(P/N

43105).

Other

blades have larger

size holes

(1/2)

which will cause

out-of-

balance

vibrations

which will dam-

age

unit and

MUST NOT BE

FIT-

TED.

-

-

scnewDavea
LEVER3

OFF

DUST

COVER

ETPOSINO

lilllt| HEX

HEAD

FOR

U}|SCRE!4NO

BLAOE

IIUT

FIG 21

A

WARNING

Do not run

motor without

blade

tightened to

blade shaft

as

gear

damage

will occur.

l6

l7

MAINTENANCE

(cont'd)

5. Clean

plastic

dust cap and

housing,

press

back

by

gently

tapping into

place.

Clean

inside

blade cover of any

built up dirt.

CHECK

THE SPARK

PLUG

lf motor is down

on

power,

difficult

to start

or runs

poorly

at

idling

speed, check

the spark

plug.

.

Allow motor

to

cool down.

.

Remove

spark

plug.

o

Clean

dirty

spark

plug.

.

Check electrode

gap

-

it should

be 0.02"

(0.5mm).

.

Rectify

faults which

have

caused

fouling

of spark

plug.

Possible faults

include:

a

a

a
a

I ncorrect

carburettor

setting

Too much

oil or wrong

tyPe

of

oil in fuel

mix

Old

fuel mix

Dirty air

filter.

o

Unfavourable

running

condi-

tions

(eg.

operating

at

Part

load).

Do not

clean the

spark

plug

in an

abrasive

grit

spark

plug

cleaner,

as

expensive

damage to

the mo-

tor

could occur

through

loose

grit

damaging

chrome

in

cylinder

bore.
Fit a new spark

plug

after

approxi-

mately 100

operating hours

or ear-

lier

if electrodes

are badly

eroded

(recommended

type

Champion

RCJ-]Y).
CHECKING EXHAUST

MUFFLER

Tighten exhaust

screws.

lf exhaust

gasket

is leaking,

replace

gasket.

if

the motor

is down

on

power

check

the muffler.

Allow

motor

to

cool

down.

Remove

and scrape

out

ex-

cess

carbon on

both inlet

and

exit

exhaust

or have

this

done by

a

service

dealer.

FIG22

LOOSE BLADE

As in 1 and 2 of Blade

Replacement

and tighten

nut clockwise.

LUBRICATION

OF GEARS

The oil in the

gear

case should

be

topped up according

to use

by

adding light free flowing

lithium-

based

grease

(Castrol

EPO)

through fill hole

in casing

[Fig.

20].

Use a suitable

filling

gun

or

squeeze oil

pack

(P/N

43227).

Re-

move bleed screw

to allow

grease

to eject indicating

gear

box is 3/4

full. Refit bleed screw and

push

in

3-4 more

pumps.

Refit fill bolt

(tighten

gently).

A

WARNING

Over

tightening will cause

plastic

thread

to strip.

TROUBLE

SHOOTING

PROBLEM

CAUSE

ACTION

Motor will

not

run.

lgnition switch

is

"OFF"............,..... Turn

switch

"ON".

Push down.

Fill fuel

tank.

Press

primer

bulb

fully & slowly 5

times.

I lse slartina nrocedrrre wilhout

Primer bulb

was not

pushed

enough

times

using

choke. See

page

1 1

Motor

will not

idle.

Carburettor

misadjusted.....

Adiust throftle idle soeed adiust-

ing screw.
Adjust carburettor.

See

page

15.

Motor

will not

accelerate.

Carburettor

misadiusted......

Arliusi carblrre,ttor See oaoe 15

Motor runs
rough or

hard

to start.

Carburettor/crankcase/

cylinder

gaskets/

crankshaft seal

leaking......

Damaged

motor

parts......

Tighten

screws

Replace

gaskets

with a sealant

and

tighten screws.

Replace

crankshaft

seal, damaged

parts.

Motor lacks
power

or stalls

when cutting.

Diriv air filter

Clean or replace

air filter.

See

page

14.
Readjust carburettor.
See

page

15.

Wrong carburettor

adjustment

...

Cutting

blade
does nottum
when

operating.

Blade cover

filled with

dirt/grass

(1lr

rlah elinnina

Clean.
Cul less deoth Check clutch.

hlada

Tighten

nut.

See

page

17.

Gear

case leak-

ing.

Tighten.

Replace.

EtrnLan

"f.\"

rina

Noisy

gears.

No heavy oil in

gear

case

Loose blade

nut or

gear

adjustment

Refill. See

page

15.

Reassemble

parts

correctly.

l8

Atom Industries

(ATOM)

watrants each

new ATOM

Lawn Edger

for TWELVE

(12)

months

for domestic

use to

the lollowino

terms

This wirranty

extends to the

original

retail

purchaser

only

and commences

on the

date of original

retail

puc

chase.

Any

part

of

the ATOM Lawn

Edger

manufactured

or

supplied by

ATOM and found

in the reasonable

judgement

of ATOM to

be detective in

material or

workmanship

will be

repaired or

replaced by

an authorised

ATOM seryice

dealer

without

charge for

parts

and labour

The ATOM Lawn

Edger, including

any

defective

part,

must be returned

to an authorised

seryice dealer

within

the

warranty

period.

The expense

of delivering

the ATOM Lawn

Edger to

the dealer

for warranty

work and

the expense of

returnino it

back to the owner

after

repair or replacement

will

be

-paid
for

by the owner.

ATOM'S

responsibility

in

respect

to claims is

limited to making

the required

repalrs

or

replacements and

no claim

ot breach of

warranty shall

be

cause tor cancellation

or rescission

of the

Conkact ot

Sale ot

any ATOM Lawn

Edger.

Proof of

purchase

will be

requrred

by the dealer

to substantiate

any mrranty

claim.

All rerranw

work must

be

performed

bv an authorised

AToM seryice

dealer

or bv At6m

Industries

This warranty is

limited to

NINEry

(90) days from the

date of

original retail

purchase

for any ATOM Lawn

Edger

that is

used for commercial

purposes

and ONE

(1)

month

lor rental ourooses.

This

watranty does

not cover

any ATOM Lawn Edger

that

has been subject

to misuse,

neglect,

negligence or

accident, or

that has been

operated

in any way

contrary to

the operating instructions

as

specified

in the ATOM Opera-

tor's Manual.

This warranty

does not apply

to any damage

to the

ATOM Lawn Edger

that

is the result

of improper

maintenance

or to any

ATOM Lawn Edger

that

has been

altered

or modified

so as to

adversely

atfect the

products

operation,

performance

or durability

or that

has been al-

tered

or modified

so as to

change its

intended use

The

warranty

does not extend

to

repalF made

necessary by

normal

wear or by the

use of

parts

or accessoties

which

are either incompatible

with the ATOM

Lawn Edger

or

adversely

affect its operation,

performance

or

durability

PLEASE

FILL IN INFORMATION

BELOW ON

PURCHASE

AS THIS

WILL ALSO BE

REOUIRED

FOR ANY

WAR-

RANTY

DATE OF

PURCHASE:

PURCHASED

BY:

Address:

State

I

Post/Zip

Code:
SOLD BY:
Addressr

State:

lPostZip

Code:

Operator

Manual

Part No.

43580 Printed

in Australia

Copyrighl

@ 1997 ATOM

INDUSTRIES.

ALL RIGHTS

RESERVED

A separale Lawn

Edger Workshop

Manual is available

Part No.

43564 also

Engine

Manual Part

No 43572

ATOM INDUSTRIES,

9

FRED STREET,

LILYFIELD,

NSW. 2040,

AUSTRALIA

PO

Box 513,

Rozelle, NSW,2039,

AUSTRALIA

Phone

within Auslralia:

(02)

9810 6691

-

International:.

+61

2

9810 0194

Fax

within Australia:

(02)

9810

6691

-

International:

+61

2 9E10

6691

ATOM INDUSTRIES

is a division

of Solo Industries

Pty Lld

(ACN

000583924)

ATOM

reserues the right

to change or

improve the

design of

any ATOM Lawn Edger

without assuming any

obligation

to modify any

product previously

manufactured.

ALL IMPLIED WARRANTIES

ARE

LIMITED

IN OURA-

TION

TO THE TWELVE

(12)

MONTH

WARRANry PE-

RIOD OR NINEW

(90)

DAYS FOR

PRODUCTS USED

FOR ANY COMMERCIAL

PURPOSE

ACCOROINGLY

ANY SUCH

IMPLIED WARRANTIES

INCLUDING

MER-

CHANTABILITY.

FITNESS

FOR

A PARTICULAR PUR-

POSE

OR OTHERWISE.

ARE DISCLAIMED

IN THEIR

ENTIRETY

AFTER

THE EXPIRATION

OF THE APPROPRI.

ATE TWELVE

(12)

MONTHS

OR NINEry

(90)

DAY

WAR-

RANTY PERIOD

ATOM'S OBLIGATION

UNDER

THIS

WARRANry

IS STRICTLY

AND EXCLUSIVELY

LIMITED

TO THE REPAIR

OR REPLACENiIENT

OF

DEFECTIVE

PARTS,

AND ATOM DOES

NOT

ASSUME OR

AUTHO-

RISE

ANYONE TO

ASSUME FOR

THEM

ANY OTHER

OBLIGATION.

SOME STATES

DO

NOT ALLOW LIMITA-

TIONS ON

HOW LONG

AN IMPLIED

WARRANTY LASTS,

SO THE ABOVE LIMITATION

MAY NOT

APPLY TO YOU,

ATOM

ASSUMES NO

RESPONSIBILITY

FOR INCI.

DENTAL.

CONSEQUENTIAL

OR OTHER

DAMAGES IN.

CLUDING,

BUT NOT LIMITED

TO EXPENSE

OF

RE-

TURNING

THE ATOM

PRODUCT TO

AN AUTHORISED

SERVICE

DEALER

AND EXPENSE

OF DELIVERING

IT

BACK TO

THE OWNER.

MECHANIC'S

TRAVEL TIME,

TELEPHONE

OR

TELEGRAM

CHARGES, RENTAL

OF A

LIKE PRODUCT

DURING

THE TIME

WARRANTY SER-

VICE

IS BEING PERFORMED.

TRAVEL. LOSS

OR DAM-

AGE TO

PERSONAL

PROPERry,

LOSS OF REVENUE,

LOSS OF USE

OF THE

PROOUCT, LOSS

OF TIiTE,

OR

INCONVENIENCE,

SOME STATES

DO NOT

ALLOW THE

EXCLUSION

OR LIMITATION

OF

INCIDENTAL OR

CON-

SEOUENTIAL

DAMAGES,

SO

THE ABOVE LIMITATION

OR EXCLUSION

MAY

NOT APPLY

TO YOU.

This

warranty

gives you

specitic

legal rights, and

you

may also have

other rights

which

vary

from

state to s-tate.

Thrs warranty applies

to all

ATOM Lawn EdEers

manuiactured

by ATOM

G

:

o

o

=

U'

o
E

f

E

62

tlJ

s

56

s=

Jo

:*
;*

a-

5(!
FO

20

2

v

v

ATOM

LA\ryN

E,DGE,R

GK3-f)

PRO-ENGINE

SERVICE

MANUAL

CONTENTS
Specifications

& Standards

Special Tools

Dissassembly

of Engine

Fuel

Supply

System

Carburettor

Fuel

Feed

Line

Ignition

System

Recoil

Starter
Clutch
Parts

List

Exploded

View

Page

No

WARNING:

FUEL

IS A HIGHLY

COMBUSTIBLE

SUBSTANCE.

DRAIN

ALL

FUEL FROM

TANK

AND

KEEP AWAY

FROM

WORKPLACE

IN A

SEALED

CONTAINER

BEFORE

COMMENCING

REPAIRS.

MAKE

SURE

ALL PARTS

ARE

CLEAN BEFORE

ASSEMBLY.

2-3

3

4-8

9
10
lt
t2
13
t4
l5
t6

ATOM INDUSTRTES
P.O. Box 513,

Rozelle

NSW

2039

9 Fred

Street Lilvfield

NSW

2040

Tel:

(02)

9810

0194

Fax:

(02)

9810

6691

E-mail:

[e-mail]

ECIFICATIONS

G3K.D

Piston displacement

Air

cooled

2-stroke

gasoline

engine

cc

33.6

mm

36x33
Nikki
Flywheel

magneto,

transistor control

Champion

RCJ-8Y

Rewind

starter

Primary

coil short-circuiting

Mixture

of alcohol-free

gasoline

and 2-cycle

oil

(ratio

25:1)

L

0.65

TECHNICAL

DATA

G3K-D

Maximum output

kW 1.10

at 7000 rpm

Maximium torque

N-m 1.77

at 5500 rpm

ldling

range

rpm

2100 - 2300

utch engaging

range

rpm 2750

-

3250

stall range

rpm

4250 - 4750

fuel consump-

g/kW-h

620

FUEL

/

OIL

RATIO

Gasoline

: Oil

Up to

20 hours use

20 : 1

20 hours use

25 1

MAINTENANCE

STANDARDS

ITEM

.

ENGINE

pression pressure

G3K-D

STANDARD

LIMIT

7.0

5.0
36 36.04
36

35.86
I

9.04

0.045 0.2

0.002T 0.05L

1.5

1.6

0.04 0.15
'1.5

1.4

0.1 - 0.3

0.7

9

898
12 12.03
12 1 1.95

0.02

0.07

0.1

-

0.3 0.4

REMARKS

Reject

if

plating

dam-

aged

inder bore

outer diameter
pin

bore

rence

between

cylinder

&

pistion

Tolerance between

piston

hole &

piston pin

T=tight; L=loose

of

groove

for

piston

ring

between

groove

and

piston

ring

iston ring

width

iston

ring end

gap

iston

pin

outer

diameter

rod

small end bore

rankshaft

diameter at

bearino section

ft misalignment

rankshaft

end

play

INTENANCE

STANDARDS . IGNITION

SYSTEM

ITEM

G3K-D

ISTANDARD

ALLOWANCE

REMARKS

gap

between

core

and rotor

10.4

r 0.1

Spark

plug

air

gap

06

,0.7

Primary

coil resistance

C

67

l!

15Vo Reading

between core & switch

wire terminal

coif

resistance

::::

! 20o/o Readino

between core and o

MAINTENANCE

STANDARDS

.

CARBURETTOR

G3K-D

ITEM

STANDARD

IALLOWANCE

REMARKS

ldle limiter

oosition

Level of metering

lever

Main

jet

# - high

speed
Jetneedle#-stage
Inlet valve

cracking

pressure

kg/cm2

,1

A

2.5
596

-

2/3

0.

r 0.1
r 0.5

44

-t

I

Right

turn:

lean.

Left turn:

rich.

See

page

10

See

page

9

(item

21)

Top stage:

lean.

Bottom

stage. rich.

ASTENER

SPECIFICATIONS

.

WORKING

UNIT

ITEM

THREAD

DIMENSIONS

(metric)

TIGHTENING

TORQUE

(kgcm)

Engine mounting

bolt /

E

M5 x 1.0

50-90

FASTENER

SPECIFICATIONS

.

POWER

UNIT

ITEM

Crankcase

halves

fastening

screw

Cylinder

mounting bolt

(Except

for YBC3OD)

Starter

pulley

mounting nut

(YBCSOD

only)

Rotor mounting

nut

(YBC30D

& YBC4OD

only)

utch

shoe

mounting bolt

(Except

for YBC3OD)

ffler mounting

bolt

(Except

for YBC30D)

mounttng

screw

rter case

mounting

screw

(YBC3OD

&

YBC4OD only)

park plug

THREAD

DIMENSIONS

(metric)
M5 x 0.8
M5 x 0.8

M10 x

'1.0

M8

x 1.0

M8x10
M6 x 1.0
M5 x 0.8
M5 x 0.8

M14 x

1.25

TIGHTENING

TORQUE

(kg-cm)

25-40

50-80
200 - 300
120 - 180
110

-

170

80 - 120

30-45

20-35

150 - 220

CIAL

TOOLS

PART NUMBER

Puller

assembly

Set

block

Rod

assembly

Stopper

To remove

rotor and

starter

pulley

1 075-961 00
1 400-9621

0
1600-96300
1

664-9641 1

lTo

set

pole

core

gap
To remove/install piston pin
To

hold crankshaft

K

12

SEftVICE GUIDE

ENGINE BLOCK

Construction

t1

13

!

NL\>.

EJY

v

\:J-ruryr

:\,

o-,

-e

i,q,

frP

@o

1.

Cylinder

2.

Gasket,

cylinder

3.

Crankcase,

rotor

slde

4.

Crankcase,

starter

slde

5: Gasket,

crankcase

6. Maln

bearing

7.

Oll seal,

slarter slde

8.

Oll seal,

rotor side

9.

Clrclip

10. Piston

11.

Piston

ring

12.

Plston

pin

13.

Circlip

14.

Thrust

washer

15.

Crankshafl

15.

17.

18.

Key

Shim

Needle bearing

v

A. Disassembly:

l.

Separate engine from

work unit Drain fuel

tank and

clean the exterior

ofthe

eneine.

2. Remove

fuel

tank. air

cleaner" carburettor.

muffler

guard.

muffler.

rylinder

cover. starter

case,

fan

cover and spark

plug.

NOTE.

When removing

carburettor and muffler.

take care not

to damage the

gasket.

Ifdarnaged.

replace

with a new

one without fail

3.

While holding

clutch shoes u'ith

:r

rod. unfas-

ten securing

bolts

with

a sockc

4)

Unfasten

the

rotor

securing

nut

and remove

rotor

by

using

the

specialtool.

Note:

.

Do

not

attempt

to

remove

rotor

by

hitting

on

crankshaft.

That

may

disorder

the

crankshaft

di_

mensions.

.

When

litting

the

puller,

make

sure

to

thread

in

the

side

bolts

to

equal

depth

over

10mm

or

threads

on rotor

may

be

damaged.

5)

Unfasten

the

stader

pulley

securing

nut

and re_

move

starter

pulley

by

using

the

special

tool.

Note:
Do

not

attempt

to

remove

the

pulley

by

hitting

on

crankshaft.

That

can

damage

the

crjnXinaft.

Extending

the

end

gap,

remove piston

ring.

Remove

circlips

from

both

sides

of

piston

pin

by

using

a

pointed

tool.

D

d4'

6) Remove

cylinder

by

pulling

it

straight.

Note:
Do

not

twist

cylinder,

or

piston

ring

may

be

broken.

Note:

Take

care

not

to

damage

piston.

9)

Push

out

piston

pin

with

the

speciallool.

7)
B)

v

t-

Rod

assembly

Note:

Wnen

tapping

on special

tool, hold

piston

in hand

so as

not

to

give

shock

on connecting rod.

10)

Unfasten

four screws,

separate crankcase

halves

and

pull

out

crankshaft.

Note:
.

Make sure

that

key

is removed

from

crankshaft.

.

Do

not use a

screwdriver

to

pry

open the fitting

surface

of crankcase

halves.

When

it difficult to

separate,

lightly

tap

on

the halves

with a soft

hammer.

Reference:

Removing

oilsealand

main bearing.

1) Oilsealshould

be broken

otf{rom

crankcase.

2) Main

bearing should

be

pressed

out with

jigs

ap'

plied

as

shown

in the figure.

Note:
Do not re-use such an oil seal once removed.

Notes:

1.

2.

3.

The

crankshaft

is

a built-up

type. Do not attempt

to disassemble

without

due facilities.

lf

defective

be

found

in the component, replace as crankshaft

complete.

Check

the service limits as

necessary.

Gaskets once removed should

be replaced

with new ones.

PTO slde

Starler slde

B.

Inspection:

Parl Check

point Repair

Cylinder

Piston

Piston

ring

Needle

bearing

Crankcase

Crankshaft

.

Carbon

deposits on the

head and exhaust

port.

.

Scoring

or

peeling

ofl

of

plated

bore.

.

Carbon

deposits on lhe crown

and in the

ring

groove.

.

Serious

damage or

partial

wear on the surface.

.

Damage or

partial

wear.

.

Looseness,

damage

or discoloration.

.

Damage, wear

or

hardening of oil seals.

.

Rough rotation of main bearing.

.

Crack ordarnage ol case

body.

.

Damage, discoloration or excessive

wear

of connecting

rod either end.

.

Scrape

otf carefully.

.

Replace.

.

Scrape

otf carefully.

.

Replace.

.

Replace.

.

Replace.

.

Replace.

.

Replace.

.

Replace.

.

Replace.

4) Install

bearing

and washers

lo connecting rod

small

end.

Assemble

piston

with

piston

pin

by using

the

special

tool.

Then,

secure

piston

pin

with

circlips.

Note:

.

Make

sure

to

point

the arrow mark

on

piston

toward

the

exhaust

side.

.

lf

circlip is

distorted,

use new

one

without

fall.

Cut

this

section

off.

6)

Fit

piston

ring to

piston groove.

Make

sure

that the

end

gap

is

properly

located

at the

positioning

pin.

7) lnstall cylinder to

crankcase while holding

piston

ring

in

the

groove.

Tighten

evenly

with

four screws.

Note:

.

Confirm cylinder bore

and

piston

ring are coated

with oil.

.

Use new

gasket

for cylinder

base

flange.

.

Twisting of cylinder can damage

piston

ring

and

cylinder bore.

8)

Fit key to crankshaft PTO

side.

Install

rotor

with

keyway fitted. Tighten firmly with

nut.

Note:
.

Check key

and

keyway for

damage or distortion.

lf necessary,

use

new

parts

without fail.

.

Keyway

position

is indicated

by

wedge-shaped

mark

on the boss of rotor.

9)

,Tighten

starter

pulley

to crankshaft.

10) lnstall

other

parts

as

they are.

Note:
.

Pay special

attention to carburetor flange

gasket.

lf defective, replace without fail.

.

When

installing clutch shoes,

face the arrow

side to outside. lf reversed, the shoes

will be

worn

rapidly accompanied

with extra vibration.

v

v

Exhaust ma;k

5) Put

crankshaft

into

crankcase

starter side

and fit

crankcase

side with

gasket

inserted. Tighten

the

halves

evenly

with four

screws.

Note:
.

Use new

gasket.

.

Check the fitting

surfaee

for

chips of old

gasket.

.

Cut off

excessive

gasket

protruding

at cylinder

base

flange.

1)

2l

Assembly:

Note:
.

Clean disassembled

parts

well and keep them

free from metal

or carbon

chips.

.

Apply

grease

to

the lip of oil seals.

.

Coat moving

parts

with

2-cycle

oil.

.

Before

actual

assembly, check fit

of

parts.

Fit the circlip

in the

groove

on the shaft hole

(PTO

side only).

Press

fit the main bearing

to the

shaft

hole of

crankcase.

Note:

.

Make

sure to

press

the bearing

straight.

.

Do not

use a hammer

to

install the

bearing.

.

Make

the number

side opposite to

the oil seal.

.

Before

pressing

in,

coat the bearing

with oil.

3)

Coat

the

lip of oil

sealwith heat-proof

grease,

then

fit in

the

shaft hole

as shown in

the figure.

PTO slde

Starler side

PTO slde

Starter

side

FUEL

SUPPLY SYSTEM. G3KD

v

v

I

.fuh

23

25

26

27
28

29
30

--o

-@,

-e

1,

Screen

3.

Cleaner

4.

Element

7.

Maln

body

8.

Rubber

cap

9.

Body

cap

10.

Throttle

sprlng

1 1. Needle

spring

12.

Recelve

13.

Jel

needle

14.

Throttle

valve

16.

Pump

cover

assembly

17.

Pump

dlaphragm

18.

Gssket

19.

Sprlng

20.

ldle

adjusting

screw

21.

Maln

adJustlng

screw

23.

Needle

valve

24.

Hlnge

sprlng

25.

Hlnge

26.

Hinge

pln

27.

Set

screw

28.

Gasket

29.

Maln

dlaphragm

30.

Maln

diaphragm

cover

-\1

,e*:")^-

^Nl

,o__M.^

./

n

@o''

"

l. Fueltank

2.

Cap

3. Inner cap

4.

Gasket

5. Filter

assembly

6.

Clip

8.

Suction

pipe

9.

Check

valve

10.

Primer

pump

ll.

Stopper

NOTE: Pipe from tank

goes

to fuel

pump

(left

hand

side).

Pipe frorn

primer goes

to

right hand

side of carburettor

near main adjusting screw,

l.

A.

1)

2l

3)

Carburetor

Disassembly

Remove

air cleaner by loosening

two air

cleaner

securing

screws

(M4).

Remove

carburetor by loosening two

carburetor

securing

screws

(M5).

Note:

Take care

not to damage

the

gasket.

Loosen

body cap

and

pull

out throttle

cable to-

gether

with throttle valve.

Then, remove

cable end

from

throttle

valve. This enables

removal of throt-

tle

valve,

jet

needle, receive,

body

cap and rubber

cap.

4)

Loosen

four

diaphragm

cover

securing

screws

(M3)

and

remove

main

diaphragm

cover, main

dia-

phragm

and

gasket.

At this

time,

take care not

to

damage

the

gasket.

Inspection and Adjustment

Check

the

stamped

number

on

jet

needle

and

throttle

valve.

<Number location>

Jet

needle

Throtll€

vatve

f596

-

2/3

step

Insert needle valve and

clean

if

any.dirt is

at-

tached. Replace it if contact face to valve

seat is

abnormallyand roughly worn.
lnspect fuel

passage

hole

of

needle

jet

and main

jet

and

inside

sensing chamber. lf dirt is

attached,

blow compressive

air and then wash with

clean

washing

oil by shaking.

Measure the level

of hinge and adjust to 1.6mm if

needed.

B.

1)

2)

3)

4l

#05

6

Bottom

vlew

o

/,6+,-

MAIN

JET

ADruSTMENT:2Y,

t

%

TURN

OPEN

+-@KD

Remove

hinge,

hinge

pin,

hinge

spring

and

needle

valve

by

loosening

a set

screw

(M3)lor

hinge

pin.

Remove

pump

cover

assembly,

pump

diaphragm

1nd

gasket

by loosening

four

securing

screws

(M3)for

pump

cover

assembly.

Note:

control lever

arm will

point

slightly

upwards

s)

6)

c.

1)

2l

3)

Assembly

Set hinge

pin

and needle

valve

to hinge

and as-

semble the hinge

together

with

hinge

spring to

carburetor body and

secure

with

set screw

(M3).

Set

gasket,

pump

diaphragm

and

pump

cover

assembly

to carburetor

body in that order

and

secure with screw

(M3).

Set

gasket,

main

diaphragm

and

main diaphragm

cover to carburetor

body

in that order and

secure

with screw

(M3).

Part Name Standard

Jel needle
Throttle

valve

596

-

2/3

slep

05

l0

4l Pass rubber

cap, body cap and

throttle

spring

through throttle

cable in that order.

Then assem-

ble cable end

to throttle valve with

jet

needle.

At

this time, be sure

to insert spring

receive

and

needle clip

between

jet

needle clip and

spring.

lf

you

lail to

do do, the

jet

needle will

go

off

during

operation ol throttle.

Align throttle

valve

guide pin

of

carburetor

body

with

groove

of throttle

valve, insert throttle

valve

into

carburetor

body and tighten body

cap.

Secure carburetor to cylinder

with screw

(M5),

putting

gasket

between

them.

Tightening

torque: 30 - 45

kg-cm

7) Secure

air cleaner

to carburetor with screws

(M4).

Tightening torque: 5

-

9

kg-cm

Fuel

feed

line

Disassembly

Disconnect fuel

hose

from

carburetor.

The tank

can be

removed by loosening three

tank securing

screws

(M5).

Remove

primer pump

and suction

hose from

fuel

tank.

Remove

Filter

Assy from

suction

hose.

Remove

the check valve from the

primer pump.

Note:

When

inspecting

filter

Assy only,

just

pull

out

suction

pipe

from

fuelfilter

port.

Inspection

Inspect

suction

hose

and

primer

pump.

Replace

if

they

are

damaged

or deterioraled.

Inspect filter and

wash

or

replace

if they

are

clogged

with

dirt.

Inspect the air vent

valve

in the

fuel

cap

and clean

or replace

if necessary.

Inspect the tank body

and

the cap

gasket

and

replace

if damaged.

Assembly

lnsert check

valve

into

grommet

and

insert

grom-

met

into

primer pump.

Be sure

to

insert in the

correct direction.

PumP

<t

)

ranr

Assemble

primer pump

and

suction

hose,

and

press

in the

hose to

fuel tank.

At

this time,

push

around

primer pump

with

wooden

spatula.

Take

care

not to scratch

the sealing

face.

fuel

pipe

into

carburetor

and

secure

the

B.

1)

2l

3)

4)

c.

1)

v

5)

6)

2)

il.
A.

1)

2l

3)

4)

3)

lnsert

tank.

ll

G3K-D

1. Rotor

2. Ignition

coil

3. High tension

lead

4. Cap

5.

Sparkplugcap

6.

Spring

7.

Sparkplug

8. Cord, primary

lffi'Lru

1

'ffi

IGNITION

SYSTEM

Construction:

A. DISASSEMBLY
Proceed

to

disassembly

referring

to the

above figure

Note:
Avoid removing

ignition

coil from

fan

cover

unless necesary.

B. INSPECTION

l. Rotor

:

since

the rotor

turns at high

speeds, it

is

exlremely

dangerous

ifit

shakes, is

deformed

or has

external

cracks. In

the following

cases replace

the rotor

with a new

one.

o

Cracked,

deformed

or chipped

fan

blades;

o

Loose

magnets

or counter-weights

which

are moulded

in

the

rotor:

.

Damaged

tapered

area;

.

Damaged

kelrvay;

.

Cracked

centre

bss.

2.

Ignition

coil : The

usability

ofa

coil can

be briefly

checked

by measunng

the

circuit resistance

with a radio

tester

(drv

cell type).

r

The

primary

coil resistance

(reading

between

the

steel

core

and the

primary

terminal)

0.6'/A

+

SoA.

The

secondary

coil resistance

(reading

between

the

steel

core) 44000

!20oA.

a

Others :
Inspect

the high

tension

cord

and the

primary

leads.

and make

sure that

they

are securely

connected

to their

terminals.

Replace

if insulation

is

damaged.

Turn

clockwlse

lo thread

ln.

Turn

counler-clockwlse

to remove.

Hlgh

tenslon

cord

Prlmary

Thread

ln

over

1Smm

r

Inspect

the spark

plug

cap and

replace ifcracked.

To

disconnect

the

cap without

damage to

the high

tension

cord and the

terminal

spring, lubricate

the

cap

with

oil and

pull

it

out slowly from

the cord.

C. INSTALLATION

OF IGNITION

COIL ANI)

TRANSISTOR

UNIT

l. Put ignition

coil

on the

bosses

offan cover,

temporar-

ily

fasten it

with three

screws.

2. Fit

the

Set

Block

to fan

cover with

the

positioning

holes

and

knock

pins

mated.

While

pressing

the

coil

to the

set block, fasten

the mounting

screws firrnly.

NOTE:

When

the set

block is

not

available. install

fan

cover to

crankcase

and

remove

rylinder

to

adjust

coil

gap

by

feeler

gauge.

T2

Spark

breaking

out RPM

is

set at 600

to

700

rpm.

When testing

spark use recoil

starter.

r

Do

not

allow

the

components

to

be heated

over 80oC.

.:.

@

12

iit'

+-1 / lo

@u

Er

I Slaner

ci"use

\6

,t I 3

iffi*

'e@d6"

10 Ratchet

I 1 Spring, return
12 E-ring

-)

:-4

RECOIL

STARTER

Construction:

A. DISASSEMBLY

I Pull

out rope

and

make a temporary

knot in the

way to

untie the knot in

the

knob.

Using the temporary knot,

allow

rope to

wind back
slowly.
Turn

reel clockwise until the inside hook of

spiral

spring is disengaged from the

reel.

Unfasten

the reel

securins

screw and take out reel

slowlv.

C.

ASSEMBLY

Make

a circle of wire with

about 170 mm

circumfer-

ence. Then,

wind up spiral

spring

along the inside

of

the circle.

Apply

grease

over the inside

bottom ofstarter case.

Then: fit the outside hook

of spiral to the

retaining

groove

on case.

As

holding the

spring agarnst the

case bottom.

remove

the wire circle.

Make a knot

at one end of rope

and

pass

it

through
reel.
Wind

rope into reel,

pass

out the remaining rope

through case

hole

and

install

knob on the rope

end.

By turning reel left.

gear

it

to the

inside hook

of
spiral spring.
Secure

reel

with screw.

NOTE. Apply lock

cement to the screw.

As holding

starter case, turn the

reel 3% turns left

with rope

hooked in a notch

on

reel

edge.

While

holding reel.

pull

back rope. Then

release

reel and allow

rope

to wind

in.

NOTE. When

rope is sagged in the full returned

posi-

tion,

give

one or

two more turns to reel. When

replac-

ing

rope.

check

new

one

for

proper

lenglh and diame-

ter, or the

rope may

interfere

the

inside wall of case.

re-

sulting

in malfunction of starter.

8 When

installing ratchet, assemble with

return

spring

first. then

put

them into the

pulley

hole with

"R'beside

it.

Secure

with E-ring.

B.

NOTE:
Make

sure that the spiral spring does

not

bounce out

Ratchet

can be

removed by removing E-ring

behind.

INSPECTION

Replace the rope with a

new

piece

if it is

excessively

worn or

kinked.

ROPE

SIZE

(D

x L): 3.5mm x l000mm

3

Replace

the

reel ifit is distorted

or cracked.

Replace

the spiral spring

ifit is

broken

or excessively

de­formed.
Replace

the

ratchet

with

a new

part

if

the engagement

area with the

reel is noticeablv worn.

l3

6rOP

2

%

1.

Glutch shoe

2.

Clulch

bolt

3.

Clutch sprlng

4.

Washer,

plaln

5.

Washer, wave

w

pre.ffi

CLUTCH

Construction:

A.

DISASSEMBLY

-

see

page

4' ENGINE

section

B.

INSPf,CTION

I

Inspect

the clutch

shoes and

replace

with

new

parts if

they

are

worn

or damaged.

2

Any oil

which

has adhered

to

the

lining

must be

re-

moved

with

gasoline

or

thinner.

3

Inspect

the clutch

spring

and

replace

if

it is worn

or

damaged.

C.

ASSEMBLY

I Hook

up the ends

of

spnng

to clutch

shoes.

Note:

When

hooking,

do

from the

outside

surface

indi-

cated

by arrow

mark.

Arrow mark

2

Place

plain

washers

on bosses

ofrotor.

put

on

clutch

shoes

and

fasten

bolts

with

wave

washer

assembled.

Note.
e

Coat

the sliding

bolt

with

grease.

.

Take

care

not to

mistake

the

installing

direction

of

wave

washer.

v

v

l4

KEY

#

DESCRIPTION

ATOM

PART

NO.

,|

CYLINDER

46100

2

BOLT

46102

3

GASKET

46104

4

GASKET

461

06

5

GASKET

461

08

6

GASKET

46110

7 INSULATOR

46112

I SCREW

46114

I

SCREW

461 16

10

CRANKCASE

SET

46118

11

GASKET

46120

12

BEARING

46't22

13

SEAL

46124

14

SEAL

46126

15

RING

46128

16

BOLT

461 30

17

GUARD

46132

18

SCREW

46134

19

PISTON

461 36

20

RING

461

38

21 PIN

46140

22

RING

46142

23

BEARING

46144

24

WASHER

46146

25

CRANKSHAFT

COMP

46148

26

SHIM.

O.3T

461

50

27 SHIM.

O.1T

46152

28 NUT

46154

29

KEY

461 56

30

SHOE

461 58

31

SPRING

46160

32

SCREW

46162

33

WASHER

46164

34

WASHER

46166

35

ROTOR

46168

36

COIL ASSEMBLY

46170

37

CORD

46172

38

CAP

46174

39

GROMMET

46176

40

GROMMET

46178

41

CAP

461

80

42 SPRING

46182

43

SCREW

46184

44

MUFFLER

461 86

45

SCREW

46188

46

BOLT

461

90

47

COVER

46't92

48

BOLT

46194

49

BOLT

461 96

50

COVER.

fan

461 98

51

GROMMET

46200

52

BOLT

46202

53

CLAMP

46201

54 PIPE

46203

55

COVER. cvlinder

46204

56

SCREW

46206

57

SCREW

46208

58

GUARD

46210

59

GROMMET

46212

60

CORD

46214

61

CORD.

earth

46216

62

SPARK PLUG

46218

63

STARTER

ASSEMBLY Onlv

as oarts

ATOM

PROFESSTONAL

EDGER

[MODEL

201021

G3KD

ENGINE

PARTS

LIST

rc3K2sAM,

p/N

43s70

KEY

# DESCRIPTION

ATOM

PART

NO.

63A

STARTER

HOUSING

46219

64

RECOIL ASSEMBLY

Onlv as

oarts

65

REEL

46220

66 SPRING

46222

67

SCREW

46224

68

ROPE

46226

69 KNOB

46228

70 TAPE

46230

71 PULLEY

ASSEMBLY

Only

as

parts

714

STARTER PULLEY

CATCH

46231

72

RATCHET

46232

73

SPRING

46234

74

E-RING

46236

75

SCREW

46238

76

CARBURETOR

ASS'Y

46240

77

RETAINER

46242

78

NEEDLE

46246

79

VALVE

46248

80

SPRING

46250

81

SCREW

46252

82

SPRING

46254

83

PIN

46256

84 ARM

46258

85 VALVE

46260

86

SPRING

46262

87 SCREW

46268

88 GASKET

46270

89

DIAPHRAGM

ASS'Y

46272

90

COVER

46274

91 SCREW

46276

92 GASKET

46278

93

DIAPHRAGM

46280

94 COVER

ASS'Y

46282

95 SCREW

46284

96 NEEDLE

46286

97 CAP COMP

46288

98

CAP

46290

99

SEAL

46292

100

CLIP

46294

101 CLEANER

ASSEMBLY Only as

parts

1014

AIR FILTER BODY

46296

102

ELEMENT

46298

103 LABEL

46300

104 SCREEN

46302

105 SCREW

46304

106

ANK ASS'Y

46306

107

CAP ASS'Y

46308

108

VALVE COMP

4631 0

109

PACKING

46312

110 STOPPER

46314

111

PIPE COMP

46316

112 FILTER

ASSEMBLY

4631 8

113

CLIP

46320

114

PUMP COMP

46321

115

PUMP

46322
116
117

11S
119

1n

121
a4
n5

GROMMET
JOINT
IUBE
VALVE
f/ASHER
SCREW
CABTE COMP
3LAMP

46324

46326
46328
46330
4$n
46334
46336

G3KD

ENGINE

PARTS

["\]

i

o{

l-so

W

,f3

4

ff----1-;

ll

67

es-\

td

/

d

*&d^A"

tu.{-t'-;Y

s7-l-83

I

O-re

i

i

SP-os

L

--F;: J

't

t'\,

,r?ffi'-

v

v