Makita Rbc252 User manual

Brush

Cutter

RBC252

String

Trimmer

RBC253

INSTRUCTION

MANUAL

RBC252

Read

i

uies

for

operation

z-irld

instrucirons

carefully

~

--

-~

Thank you very much for purchasing your

MAKITA

STRING

TRIMMER

’

BRUSH

CUTTER

We are

prclud

of

and very confident

in

recommending our

MAKITA

STRING

TRIMMER

/

BRUSH

CUTTER

as

d

result

of

our

extensive development and substantial knowledge

and

experience

Please read and understand

this

booklet thoroughly before operating

yoiii

MAKITA

STRING

TRIMMER

BRUSH

CUTTER

In

order to take advantage

of

its

outstaridincj mrfor;?-l-ince

SAFETY

RULES

AND

PRECAUTIONS

Proper >afetyprecautions

must

be observed Like all power quiprnent

this

unit

must

be handled carefully

DO

NOT

EXPOSE

YOURSELF

OR

OTHERS

TO

DANGER

Follow these general rules

Do not

perniit others

to

use

this

machine unless they are thoroughly responsible and have read and understood the machine manual

2nd

are trained

in

its

operation

1

Always weal safety goggles for eye protection conforming

to

the

ANSI

287

1

Safety Standard

Dress

aopropriarely do

not

wear loose clothing

or

jewelry that could become caught

in

moving parts

of

the

unit

Safe,

siurdy

nonskid

footwear

should

always be

worn

Long

hair should be tied back

It

is

recommended that legs

and feet be covered

to

protect them

from

flying

debris

during

operation

2

3

1

5

G

7

8

‘J

Inspect the entire machine for loose parts

(nuts,

bolts screws etc

)

and any damage Repair

or

replace

as necessary before

using

the machine

DO

NOT

USE

any attachment

with

this

power head other than one recommended

by

MAKITA

Serious

iqurv

to

the user or bystanders or damage

to

the engi~ecould result

Keep the handles free of

oil

and fuel

Always use the proper handle and shoulder strap when cutting

Do

not smoewhile

mixing

fuel or

filling

tank

Do

not

mix

fuel

in

an enclosed room

or

near open flames Assure adequate ventilation

Ai??iays

mix

and

store the fuel

in

a properly marked coitainer ‘hat is approved

by

local codes and

crdinances

for

such usage

Vsver

remove the fuel tank cap while the engine

is

riirriir’cj

I

-.

3

kever

start

or

run

the engine inside a closed room

or

:,JiIdii-y

Fumes from the exhaust contain

dangercus carbon monoxide.

11

12

Never attempt

to

make engine adjustments while the

uzii

is

running

and strapped

to

the operator Always

make engine adjustments

with

the

unit

resting on a flat clear surface

Do

not use the

unit

if

it

is

damaged

or

poorly adjusted Never remove the machine’sguard

13

Inspect the area

to

be cut and remove all debris that

could

become entangled

in

the nylon cutting

headicutter blade.

Also

remove any objects that the

unit

may

throw

during

cutting.

14.

Keep children away. Onlookers should be kept at a safe distance from the work area, at least

50

ft.(

15m)

15.

Never leave the machine unattended.

16.

Do not use

this

unit

for any jobs other than those for which

it

is

intended as described

in

the

manual.

17.

Do not overreach. Keep proper footing and balance at all times. Do

not

run

the

unit

while standing on a

ladder or any other unstable footing location.

18.

Keep hands and feet away from

the

nylon cutting headcutter blade while the

unit

is

in

use.

19

20

21

Do not use

this

type

of

machine for sweeping away debris

Do

not

use the

unit

when

you are tired or under the influence

of

medication,

drugs

or alcohol

Do

not

use

a damaged cutting head /cutter blade

If

a stone

or

any other obstacle

is

hit,

stop

the

engine

and check thenylon cutting head /cutter blade

A

broken

or

unbalanced nylon cutting headkutter blade

must

never be used.

Follow

instructions for changing accessories

Do not store

in

a closed area where fuelvapors can reach an open flame

from

hot

water heaters,

furnaces,etc. Store

in

a locked, well ventilated area only

-

22

2

23

24

25

26

27

28

29

30

31

32

33

34

i

35

36

37

38

39

40

41

42

43

44.

45

46.

Use

only replacement parts

that

are

identical

to

original equipment

parts

when

servicing

the

unit:

these

parts

are available from your

dealer,

The use of any other accessory or attachment inay create

a

potential hazard,

injury

!o

the user and damage

to

the machine.

Clean

the

machine completely. especially the

fuel

tank cap,

its

surroundings, and the air cleaner.

When refueling,

be

sure

to

stop

the engine and confirm

that

it

has cooled down Never refuel

,v!:&n

the

engine

is

running

or hot. When gasoline

spills,

be sure

to

completely wipe

it

away

and

prq)?!i'l

'Tispc?se

r7f

those materials. Move

at

leas?

10

it.

i3m) away from the

fueling

source and

site

before

star!inc;

::-IS

e?yirie

Stay away fromother workers

or

bystanders

(50

ft.,

15m).

When

approaching an operator of

the

machine, carefully call

his

attention and confirm that

tihe

i?ysra!or

stops

the

engine.

Be careful-noi

to

startle

or

distract

the

operator causing an unsafe siiuatim.

Never

touch the nylon cutting headicutter blade while the

engine

IS

running.

If

it

is

necessdi-y

;r,

&just

the

protector

or

nylon cutting head!cutter blade,

be

sure

to

stop

the

engine and confirm

that

rhe

7

headicutter blade has

stoppea

rurning.

The

engine

should be turned

off

when the machine

is

moved between work areas.

Be

careful not

to

hit

the nylon cutting head/cutter blade against stones, or the ground. Unreasonably

rough operation

will

shorten the

life

of the machine as

well

as

create an unsafe environment io!'

you

and

those around you.

Pay attention to loosening and overheating of parts.

If

there

is

any abnormality

of

the machine.

stop

operation immediately and check the machine carefully.

If

necessary, have the machine serviced

by

a

qualified service facility. Never continue

to

operate a machine which may be malfunctioning

In

startup or during operation of

the

engine, never touch hot parts such

as

the muffler,the high-vo!tage

wire or the spark

plug.

For a while after the engine has stopped,

the

muffler

is

still

hot. Never place the machine near flammable

materials

(dry

grass. etc.),combustible gasses or combustible liquids.

Pay special attention when operating

in

the rain or shortly after

the

rain as the ground may be slippery.

If

you

slip

or fall

to

the ground or into a hole, release

the

throttle

lever

immediately

Be careful

not

to

drop

!he

machine

ar

hit

it

against obstacles.

Before proceeding

to

adjust or repair the machine.

be

sure

to

stop

the

engine and detach the

spark

plug

cap from the spark

plug.

Before storing

the

machine

for

a long

time,

drain all

fuel

from the

fuel

tank ana carburzior clear1

it1e

parts. move the machine

to

a safe place,

and

confirm that

the

engine

has cooled down.

Make periodic inspections

to

assure

safe

and efficient operation,

If

you need professional inspection

of

your machine, please contact your nearest Makita Factory Service Center

or

authorized dealer.

Keep the machine well away from

fire

or

sparks.

Warning:

The cutter area

is

dangerous

while

the machine

is

coasting

to

a

stop.

Don't

try

to

tackle a big job

with

an

undersized machine.

Use

this

machine only for trimming;

use

a lawn

mower for large areas.

Wear a

dust

mask

in

dusty

work conditions.

Wear hearing protection for extended periods

of

use,

and any time

the

noise

is

uncomfortable.

Keep

guards and protectors

in

place and

in

working order.

Never

operate

this

machine

while

it

is

turned upside-down

or

when

it

is

at an extreme angle.

CAUTION! CAUTION! CAUTION!

WHEN MIXING GASOLINE

WITH

TWO-CYCLE ENGINE OIL, USE ONLY GASOLINE WHICH CONTAINS NO

ETHANOL

OR

METHANOL

(TYPES

OF

ALCOHOL), THIS WILL HELP TO AVOID POSSIBLE DAMAGE TO

ENGINE FUEL LINES

AND

OTHER ENGINE PARTS.

-

.'

SAVE THESE INSTRUCTIONS.

3

EQUIPMENT DESCRIPTION

NO.

_.

-

~

1

I

FuelTank

I

Recoil Starter

2

Air

Cleaner

I

___

__

3

4

TSTOPSwitch

-5

1

Spark

Plug

6

--Muffler

----

7

i

Holder Case

8

T<TaT&ip

--

-

~~

#-

,

--

-

..

-

,--

~

-

RBC253

20

I

Fuel

Filler Cap

~

.~-

Hanger

9

10

21

Starter

Knob

Handle

11

Throttle

Lever

22

Primer Pump

13

23

Choke

Lever

Drive

Shaft

Exhaust Pipe

Protector

14

Gear Case

15

16

Handle Joint

18

Nylon Cctiing Head

.-~

-

~

-

___

-

--

__

~

-

_--

-

__

-

7.-

----

_.

-

_-

-

24

25

Waist Pad

26

-

__

-

--

1

-

--

___

~~

--

.

Cutter Blade

~

-~

*”

RBC252

I

~

1

ITEM NO. DESCRIPTION ITEM NO.

i

DESCRIPTION

ITEM

I

DESCRIPTION

ASSEMBLY

INSTRUCTIONS

FOR

STRING

TRIMMER

(Model

RBC253)

Mounting the handle

(Fig.

1)

1

2

3

4

Attach

the

handle

to

the

drive shaft

Install

the

handle joint

on

the

handle

as

shown in

Fig

1

Insert

the

installation

bolt

M6x45 through

the

holes

in

the

handle and

attach

the

flange nut

M6

Adjust

the

handle

to

the desired position and

tighten

the

installation

bolt

Mounting the protector

(Fig.

2)

1.

Install the clamp on the drive shaft

so

that the

,

projection

of

the

clamp

is

inserted into

the

opening between

the

gear

case

and the drive

shaft.

2.

Attach

the

protector with two installation

bolts

M6x20.

i

Mounting the nylon cutting head

1

Turn

the

machine upside down

so

that

you

can

easily

install

the

nylon cutting head.

2.

Insert

the

hex wrench through the

hole

in

the

back

of

the

gear

case

(Fig.

4)

and turn the

tightening

washer

until it

is

locked

with

the

hex

wrench

(or

the

shaft

is

locked).

3.

Using

the

socket wrench, remove the left-handed

nut

(by

turning it clockwise).

Also

remove the

tightening washer (Fig.

3).

4.

Screwthe nylon cutting head onto the shaft

(Fig.

4).

IMPORTANT!

READ THE INSTRUCTIONS FOR

USE

OFTHE

NYLON CUTTING HEAD

(PAGE

17)

BEFORE

OPERATING THIS MACHINE.

-

Fig

1

,

.

..

-

Gear

case

Installation

bolt

M6x20

I

Ciamp

,

Protector

I

Fig.

2

Fig.

3

Fig.

4

5

TProttle

wire

io

throttle

lever

STEP

1

Flcj

9

Throttle

wre

ano

Mounting the handle and connecting the throttle

wire

and switch cords.

1

klatch the protrusions

on

the handle

joint

10

the

slot

in

the underside

of

the handle and tighten he four

2

Connect the throttle wires and

firmly

close the cable joint (asshown

in

3

steps

in

Fig

7)

3

Connect the switch cords

to

the two cords from the engine

by

inserting one

into

the other

4

Wrap the waist pad around the drive shaft

so

tnat the hanger

will

protrude through the

slit

in

the waist

pad

and

the throttle wire and

cords

w1'I

also

be

wrapped under the waist pad

(Fig

8)

5

Secure the throttle wire

with

the

weclip as shown

in

the

figure for easy oDeratioi1

(Fig

9)

6

Cover the throttle wire and swtct?

cords

wth

split

tubing (Fig

10)

motor

cover

to

rernove sixk

fiom

the wires

socket head

bolts

M5

evenly

to

secure the handle

(Fig

5,6)

Note Squeeze the throttle lever

to

make sure that

the

throttle wire moves smoothly

Notes

It

IS

easier

to

instdl

ihe

split

tcrbing

if

the bullet connectors are partially pished into the

6

ASSEMBLY

INSTRUCTIONS

FOR

BRUSH

CUTTER

(ModelRBC252)

Mounting the protector

(Fig.

11)

1.

Install the clamp on the drive shaft

so

that

the

projection

of

the clamp

is

inserted into

the

opening between the gear

case

and

the

drive

shaft.

2.

Attach the protector with

two

installation

bolts

M6x20.

Mounting

the

cutter

blade

(Fig.

12,13)

1.

Turn the machine upside down

so

that

you

can

easily install

the

cutter

blade.

Insert the hex wrench through the hole in

the

back

of

the

gear

case

and turn

the

tightening

washer until

it

is

locked with

the

hex wrench

(or

the shaft

is

locked).

2.

3.

Using

the

socket

wrench, remove

the

left-handed

nut (by turning

it

clockwise).

Also

remove

the

tightening washer.

4.

Mount

the

cutter blade

onto

the

shaft

so

that

the

guide

of

the

support washer

fits

in

the

arbor hole

in

the

cutter

blade.

Install

the

tightening washer

and secure the cutter blade with the

nut.

(Tightening torque:

130-230

Kg-cm,l

15-200

in-

Ibs).

NOTE:

Always

wear gloves when handling

the

cutter

blade.

WARNING:

The cutter

blade

should

be

installed firmly

and securely. (Fig.

14)

If

the guide

of

the support washer doesn't

fit

in the arbor

hole

in the cutter blade.

the

brush

cutter

will

make violent vibration.

It

not only

shortens the machine

life,

but may

also

allow

the cutter

blade

to loosen and

fly

off.

Failure

to

install

the

blade

correctly

can

cause

serious injury.

7.

!FA

PO

RTANT!

READ

THE

INSTRUCTIONS

FOR

USE

OF

THE

BRUSH CUTTER BLADE

(PAGE

15)

BEFOFIE

OFERATING THIS MACHINE.

Gear case Installation bolt

M6x20

Protector

Fig.

11

~

r--

I

HE

PREPARING

FOR

OPERATION

Fuel

and

oil

mixture

This

product

is

powered

by

a two-cycle

engine

and requires pre-mixinggasoline and two-cycle engine

011

Inspect the fuel tank and

fill

with

clean, fresh

fuel

and

oil

of

the

proper

rrtxture

to

assure the

longer

life

of

the

tool

Use the following

mixed

gas

Gasoline Genuine Makita Two-cycle

engine

oil

=

50

1

or

Gasoline Other manufacturer's Two-cycle

engine

oil

=

25

1

recommended

~

____

-.

____-

-

__

-

.

FOR

CALIFORNIA REGULATION:

THIS

EQUIPMENT

IS

CERTIFIED

TO

OPERATE ON GASOLINE

+

TWO-CYCLE ENGINE OIL

WHEN

MIXING

GASOLINE WITH TWO-CYCLE

ENGINE

OIL,USE ONLY GASOLINE WHICH CONTAINS NO

ETHANOL

OR

METHANOL (TYPES OF ALCOHOL).

THIS

WILL

HELP TO AVOID POSSIBLE

DAMAGE

TO

ENGINE

FUEL

LINES

AND

OTHER

ENGINE

PARTS.

DO NOT

MIX

GASOLINE

AND

OIL DIRECTLY

IN

THE

FUEL

TANK.

IMPORTANT:

Failure

to

follow

groper

fuel

mix

instructions may cause damage

to

the

engine.

CAUTION:

1.

When preparing fuel

mixture,

mix

only the amount needed for the job you are

to

do. Do not

use

fuel

mixture that has been stored longer

than

tbvo months. Fuel mixture stored longer than

this

will

cause hard

starting and

poor

performance,

If

fuel

mix

has been stored longer than

this

time,

it

should be removed

and replaced

with

a

fresh

mixture.

2.

Never-

fill

the fuel tank to the

very

top

3.

Never add

fuel

to the tank

in

a closed, unventilated area.

4

Do

no: add

fuel

to

this

unit

close

to

an

open fire

or

sparks

5.

Be

sure

to

wipe

off

spilled

fuel

before attempting

to

start

the engine

6.

Do not

attempt

to

refuel a hot

engine.

Check

points

before operation

1.

Check forloose bolts,

nuts

and fittings.

2.

Check

the

air

cleaner for dirt. Clean

the

air filter

of

all dirt, etc. before operation

3.

Check

to

be sure

that

protector

is

securely

in

place.

REFUELING

Use Oil-gasolinemixture for fuel

as

noted

in

"Fueland

Oil

Mixture" on previous page

Always

shut

off

the engine

and

allow

it

to

cool before refuel-

ing.

Thoroughly clean the area around the fuel filter cap,

to

pre-

vent

dirt

from

getting into the fuel tank.

Unscrew the fuel cap and

fill

the

tank

with

fuel, then screw

on the fuel filler cap

tightly(EdT.

/'3,'..

Wipe off any spilled fuel before starting.and check for leak-

age

-I

Check for fuel leakage while refueling and

during

operation

If

fuel or oil leakage

is

found,

do

not start or

run

the engine

until

the leak

is

fixed and any spilled fuel has been wiped

away.

Avoid

skin

contact

with

mineral

oil

products.

Do

not inhale

fuel vapor. Always wear protective gloves

during

refueling.

Change and clean protective clothing at regular intervals.

Take care not

to

spill

either fuel oi

oil

in

order

to

prevent soil

contamination (environmentalprotection) Clean

the

brush

cutter or

string

trimmer immediately after

fuel

has been

spilt

Avoid any fuel contact

with

your

clothing. Change your cloth-

ing

instantly

if

fuel has been

spilt

on

it

(adanger

to

life)

Inspect the fuel cap at regular intervals making sure that

it

IS

securely tightened.

Select bare ground for fueling and move at least

10

feet

(3m)from fueling spot before starting the engine(Fy,

&),

Never refuel

in

closed rooms. Fuel vapors accumulate at

ground level

(risk

of

explosions).

Only transport and store fuel

in

a container approved for

gasoline. Make sure the stored fuel

is

not accessible

to

chil-

dren.

WARNING!

Gasoline

is

extremely flammable fuel

Use

extreme caution

when handling gasoline

or

fuel

mix.

Do

not smoke

or

bring

any fire or flame near the fuel(FA?.

/yI4

1

Figl

5

1

Figl

6

Figl

7

=.

9

ENGINE STARTING AND

STOPPING

PROCEDURES

Starting when the engine

is

cold

Use

the

following procedure when the engine

is

cold

01

after

It

has beer, stopped

for

longer than

5

minutes.

or

aft;.:

f1~ir.I

has

oeen

added

to

!he engine.

1.

S!ide

the

stop

switch

away

from

the

'STOP

(Fig. 17.18).

2.

Gently push

on

the primer

pump

repeated!\/

7 ~

1Q

times)

until

fuel enters the primer

pump

(Fig.

19)

3

Close the choke lever

fully

by

mown3

it

to

tiic

,aq

position

(Fig.

19:i

4.

Lock the throttle lever

in

the

"start"

position

5s

tJl!cws:

REX252

(Fig.

13)

I)

ii)

RBC253

(Fig.

20)

i).

Squeeze the throttle lever

fully.

ii).

Hook the lock

fin

to the notch

in

the throttle lever

while releasing the throttle lever.

5.

Lay the machine

in

a clear area Be

sure

ths

cutting

line

or

blade canso: cmtact the ground

or

any obsti-ircrion

Hold

the d:ive

shaft

or

the

grip

with

one haat!

and

give

severa!strong

pulls

to

the starter

using

the

other

hand.

6.

After

the

engine has started. open

the

choKC

lev?r

fully

by

cwng

it

gradually

to

:he

~

o

~

position.

7.

Release the throttle lever

fully.

Note:

The throttle lever

is

unlocked

by

swe

s

I

cj

Ii

t

i

v

Squeeze the throttle lever

fully

Push the lock button while releasing

thi!

throttle lever

Rest

a

rt

I

ri

g

i

IT

m

ed

i

at

e

I

y

aft

e

r

the

o!

n

y

i

ii

P

h

a

s

t

o

13

ped

.

1

Slide the stop switch away

iron;

tne STOP ucsition

2

3

Leave the choke lever

in

the oDen positiorl (Fig

19)

4

5

(Fig

17

18)

Gently

push

on

the

primer

pump

repeatedly

17

-

10

times)

until

fuel

enters the primer

pump

(Fig

19)

Leave the throttle lever

fully

released

Lay

the

machine

in

a

clear area Be sure the cutting line

or

blade cannot contact the ground or any obstruction

Hold

the

drive

shaft

or

grip

with

one hand, and give

several

strong

pulls

to the

starter

using

the

other hand

CAUTION:

Never operate the engine at high rpm without load. With the

throttle lever fully squeezed and no load, the engine

rpm

will

be

very high which could have an adverse effect on the

life

of

the engine.

Stopping

1.

Release the throttle

ievei

fully

2

When

the

engine

rpm

has lowered,

push

the stop

switch

to

the

"STOP"

position The engine w11 stop

0

-

SIOD

,

Stop

switch

Postion

I

Start

Position

Lock button

Lock

off

lever

Throitie

level

w

Fig.

18

Choke

lever

Fig.

19

/

\

Lock

fin

Fig.

20

10

Makita RBC252 User manual

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