Bedienungsanleitung Makita UC 4030 (Seite 20 von 136) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Norwegisch)

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to the motor will be cut off.

If the saw does not start when the ON/OFF switch

(1) is actuated, it will be necessary to release the

chain brake.

- Pull the hand guard (6) firmly in the direction of the

arrow until you feel it catch. (Fig. 47)

Important:

These models are equipped with a starting current

limiter. This electronic component prevents too abrupt

starting of the electric motor.

Excess current cutoff: When the electrical current to the

saw exceeds the permissible level, the power supply to the

motor is automatically cut off. This prevents overheating

of the motor and resulting damage. To start the saw up

again, release the ON/OFF switch and press it again.

CAUTION: Do not use the saw if the current cutoff

repeatedly switches off the saw. Consult a MAKITA

service centre.

Checking the chain brake (Fig. 48)

Do not work with the chain saw without first

checking the chain brake!

- Start the motor as described (make sure you have a

good footing, and place the chain saw on the ground

in such a way that the guide bar is free of contact).

- Grasp the tubular handle firmly with one hand and

hold the grip with the other.

- Switch on the motor and press the hand guard (1) in

the direction of the arrow with the back of your hand

until the chain brake engages. The chain should stop

immediately.

- Switch the motor off Immediately and release the

chain brake.

Important: If the saw chain does not stop

instantly when you carry out this test, do not

under any circumstances use the saw! Take the

chain saw to a MAKITA service center.

Testing the run-out brake (Fig. 49)

Do not work with the saw without first testing the

run-out brake!

- Start the motor as described (make sure you have a

good footing, and place the chain saw on the ground

in such a way that the guide bar is free of contact).

- Grasp the tubular handle firmly with one hand and

hold the grip with the other.

- Switch the motor on and then back off. The chain

should come to a full stop within two second of

switching off the motor.

Important: If the saw chain does not stop within

two second when you carry out this test, do not

use the saw! Inspect the carbon brushes.

Checking the chain lubrication (Fig. 50)

Never saw when a sufficient chain lubrication is not

guaranteed. Otherwise the life of the sawing device will

be reduced. Before starting work check the oil level in

the tank and the oil feeding. Check the fed oil quantity

by following the instructions below:

- Start the electric chain saw.

- Hold the running chain saw approx. 15 cm above a

trunk or the ground (use an appropriate surface).

If the lubrication is sufficient, you will see a light oiltrace

because oil will be centrifuged from the chain saw. Pay

attention to the direction the wind is blowing and avoid

unnecessary exposure to the oil spray!

MAINTENANCE

Sharpening the saw chain (Fig. 51)

When working on the saw chain you must always

pull out the power supply plug and wear protective

gloves.

The chain needs sharpening when:

- the sawdust from sawing humid wood looks like wood

flour.

- the saw chain penetrates the wood only under great

pressure.

- the cutting edge is visibly damaged.

- the sawing device is pulled to the left or the right

during the sawing operation. This is caused by

uneven sharpening of the chain or by damage to one

side of it.

Important: Sharpen frequently, but without

removing too much metal!

Generally, 2-3 strokes of the file will be enough.

Have the chain resharpened in a service center when

you have sharpened it yourself several times.

Proper sharpening: (Fig. 52)

CAUTION:

Use only chains and guide bars designed for this

saw!

- All cutters must be of the same length (dimension a).

Cutters with different lengths result in rough running of

the chain and can cause cracks in the chain.

- Minimum cutter length is 3 mm (0.11”). Do not

resharpen the chain when the minimum cutter length

has been reached; at this point, the chain must be

replaced.

- The depth of the cut is determined by the difference in

height between the depth limiter (round nose) and the

cutting edge.

- The best results are obtained with a depth-limiter

depth of 0.64 mm (.025”).

CAUTION:

Excessive depth increases the risk of kickback!

(Fig. 53)

- All cutters must be sharpened to the same angle, 30°.

Different angles result in a roughly, irregularly running

chain, increase wear and tear and cause chain

beakage. (Fig. 54)

- The 85° front rake of the cutter results from the cut

depth of the round file. If the proper file is used in the

right manner, the correct front rake will be obtained

automatically.

Files and how to work with them

- Sharpen using a special file holder with a saw chain

round file dia. 4.0 mm. Normal round files are not

appropriate for this work.

- The file should cut only when pushed forwards

(arrow). Lift the file when leading it backwards.

(Fig. 55)

- First sharpen the shortest cutter. The length of this

cutter is then the standerd for all other cutters of the

chain.

- Always guide the file as in fig. shown.

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