Manual Makita BBC231U (page 13 of 100) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish)

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NOTE:

• Remove tape adhered to cutter, which cuts nylon cord,

on guard extension at the first use. (Fig. 20)

To remove the guard extension, apply a flat-blade

screwdriver into the notch on the guard, push it in and

meanwhile slide the guard extension.

Installing the cutter blade

CAUTION:

• Be sure to use genuine Makita cutter blade.

• The cutter blade must be well polished, free of cracks

or breakage. If the cutter blade hits against a stone

during operation, stop the motor and check the blade

immediately.

• Polish or replace the cutter blade every three hours of

operation.

• Always wear gloves when handling the cutter blade.

• Always attach the blade cover when the machine is not

in use or is being transported.

• The cutter blade-fastening nut (with spring washer) is a

consumable part. If there appears any wear or

deformation on the spring washer, replace the nut. Ask

your local authorized service center to order it.

Turn the machine upside down so that you can replace

the cutter blade easily. (Fig. 21)

To dismount the cutter blade, insert the hex wrench

through the hole on the protector cover and gear case.

Rotate the receive washer until it is locked with the hex

wrench. Loosen the hex nut (left-hand thread) with the

socket wrench and remove the nut, cup, clamp washer

and hex wrench. (Fig. 22)

Mount the cutter blade onto the shaft so that the guide of

the receive washer fits in the arbor hole in the cutter

blade. Install the clamp washer, cup, and secure the

cutter blade with the hex nut with 13 to 23 Nm of

tightening torque during holding the receive washer with

hex wrench. (Fig. 23)

Make sure that the blade is the left way up.

Installing of nylon cutting head

CAUTION:

• Always mount not only guard but also guard extension

when using nylon cutting head.

• Be sure to use genuine Makita nylon cutting head.

• If the nylon cutting head hits against a stone during

operation, stop the motor and check the nylon cutting

head immediately.

Turn the machine upside down so that you can replace

the nylon cutting head easily. (Fig. 24)

Insert the hex wrench through the hole on the protector

cover and the gear case and rotate the receive washer

until it is locked with the hex wrench. Mount the nylon

cutting head onto the threaded spindle directly and tighten

it by turning it counterclockwise. Remove the hex wrench.

To dismount the nylon cutting head, turn the nylon cutting

head clockwise during holding the receive washer with

hex wrench.

OPERATION

Correct handling of machine (with bike

type handle)

Correct posture

WARNING:

• Always position the equipment on your right-hand side

so that the shaft of the left handle is always ahead of

you. The correct posture reduces the risk of injury

caused by kickback. (Fig. 25)

Fit the shoulder harness as shown and hang the machine

firmly on your right side so that the shaft of the left handle

is always ahead of you.

Attachment of shoulder harness (Fig. 26)

Wear the shoulder harness on your back and buckle it up

until a click is heard. Make sure that it cannot be taken off

with pulling it off. Hang the machine as shown.

Adjust the strap length so that the cutter blade will be kept

parallel with the ground at the level of 10 to 30 cm above

the ground.

Detachment (Fig. 27)

In case of emergency, press the lever of the buckle

strongly to take off the harness and the machine.

WARNING:

• Be extremely careful to maintain control of the

machine at this time. Do not allow the machine to

be deflected toward you or anyone in the work

vicinity. Failure to do so could result in serious injury.

Correct handling of machine (with loop

type handle)

Correct posture

WARNING:

• Always position the equipment on your right-hand side

so that the shaft of the barrier is always ahead of you.

The correct posture reduces the risk of injury caused

by kickback. (Fig. 28)

Fit the shoulder harness as shown and hang the machine

firmly on your right side so that the barrier is always ahead

of you.

Attachment of shoulder harness (Fig. 29)

Hang the shoulder harness on your left shoulder with

putting your head and right arm though it. Buckle it to the

hook unit until a click is heard. Make sure that it cannot be

taken off with pulling it off. Hang the machine as shown.

Adjust the strap length so that the cutter blade will be kept

parallel with the ground at the level of 10 to 30 cm above

the ground.

Detachment (Fig. 30)

In case of emergency, press the emergency detachment

lever strongly.

WARNING:

• Be extremely careful to maintain control of the

machine at this time. Do not allow the machine to

be deflected toward you or anyone in the work

vicinity. Failure to do so could result in serious injury.

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Makita BBC231U Manual

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