Manual Makita UC 4030 (page 21 of 136) (English, German, Dutch, Danish, French, Italian, Portuguese, Spanish, Norwegian)

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- The file holder makes file guidance easier. It is

marked for the correct 30° sharpening angle (keep

the marks parallel with the chain when filing, see

illustration) and limits the cut depth to the correct 4/5

of the file diameter. (Fig. 56)

- After having sharpened the chain, the height of the

depth limiter must be checked by means of a chain

gauge.

- Correct even the smallest excess height with a special

flat file (1).

- Round off the front of the depth limiter (2). (Fig. 57)

Cleaning the guide bar, lubricating the

sprocket nose (Fig. 58)

CAUTION: Protective gloves must be worn.

Regularly inspect the bearing surfaces of the guide bar

for damage, and clean them with a suitable tool.

If the saw is used intensively it will be necessary to

lubricate the return sprocket bearings regularly (once

a week). To do this, first thoroughly clean the 2 mm

hole at the tip of the guide bar, and then press in a small

amount of multi-purpose grease.

Multi-purpose grease and grease guns are available as

accessories.

Multi-purpose grease (order no. 944 360 000)

Grease gun (order no. 944 350 000)

Replacing the saw chain (Fig. 59)

CAUTION:

Use only chains and guide bars designed for this

saw!

Check the sprocket (1) before mounting a new chain.

CAUTION:

Worn out sprockets (2) may damage the new chain and

must therefore be replaced.

Do not attempt to replace the sprocket yourself.

Sprocket replacement requires special training and

tools and must be done at a MAKITA service centre.

(Fig. 60)

Inspecting and replacing the carbon brushes

(Fig. 61)

Important:

Inspect the carbon brushes at regular intervals!

A notch on the brush shows the limit of wear.

NOTE:

The carbon brush is very delicate, so be careful not to

let it drop. When taking it out, be sure to note the

position it was installed in, since each brush is run

in with the rotor.

- Use a slotted bit screwdriver to unscrew the cover (1),

and then pull out the brush (2).

- If the wear limit has not yet been reached, put the

brush back in the same position and screw the cover

(1) back on.

- Run the saw briefly (about a minute) so the brushes

can run in again.

Important: Now test the run-out brake. If the saw chain

does not come to a full stop within two second, run the

saw again briefly and repeat the test until the brake

functions properly.

NOTE: After installing new carbon brushes, run the saw

about 5 minutes and then check the run-out brake.

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Makita UC 4030 Manual

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