Bedienungsanleitung McCulloch PRO MAC 54 54CC (Seite 12 von 13) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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FAULT FINDING TABLE

Engine runs badly

Engine will not start

The machine runs

or looses power when cutting but does not cut well

Check STOP switch is in the position I.

•

Control fuel level min. 25% tank capacity.

••

Check air filter is clean.

••

Remove spark plug, dry it, clean it

and adjust it, and replace it, if necessary. ••

Control and adjust the carburetor screws if necessary.

•

Change fuel filter. Contact your dealer.

•

Carefully follow the cutting accessory assembly instructions.

•

Check chain is sharp. Otherwise, contact your dealer.

•

Engine still gives trouble: contact your dealer.

SAFETY CHAIN BRAKE

Your chain saw is fitted with a safety chainbrake desi-

gned to stop the chain in milliseconds in case of kick-

back. Always hold the saw firmly in both hands.

The chain brake does not provide a total protection if the

machine is used without taking the necessary precautions

and maintenances.

The chain brake is intended to engage automatically in case

of kickback.

The chain brake can also be engaged manually by pushing

the chain brake lever forwards.The manual use of the chain

brake is recommended only at idle.

Always test the chain brake before using your saw. Do this

by engaging the brake at idle (see below).

Always release the brake before starting.

Kickback may occur if the end of the bar (see illustrated

angle) touches any solid object.

Never attempt to start a cut with the end of the bar.

Kickback is a violent upward and rearward movement of the

bar and may cause you to lose control of the machine.

Therefore you should avoid starting a cut with this part of the

bar. Always keep a firm grip on the saw with both hands

because, in case of kickback, it is the contact of the left hand

with the brake lever which will help to engage the brake.

CHAIN BRAKE TESTING:

1 The chain brake (A) is disengaged when brake lever is

pulled back and locked(chain can move).

2 The chain brake (A) is engaged when brake lever is in the

position (chain cannot rotate).The chain brake should snap

into both positions.If strong resistance is felt or lever does

not move into either position, DO NOT USE YOUR SAW.

Take it immediately to an authorized servicing dealer.

3 CHAIN CATCHER

This unit is fitted with a chain catcher below the drive

spocket. This is intended to stop the rearward movement of

the chain in case of breakage or if it should come out of the

bar. It should never be removed.

CHAIN SHARPENING

1 Chain cutter teeth can be sharpened with a round file,

as follows:

CHAIN FILE

SPR 378 GX 7/32”

The exact chain type is marked on the bottom half of the

drive link which runs inside the bar groove.

Filing can be made easier by also using a file holder.

The chain can remain fitted on the bar during sharpening.

Before commencing, the chain should be tensioned cor-

rectly and the chain brake should be activated to prevent

the chain from moving.

2 To obtain a correct sharpening the file must be carefully

held to maintain 3 basic angles:

– “A” Top angle 30° - 35°

– “B” External, side angle 85° - 90°

– “C” Internal, side angle 60°

File in one direction only, from the “inside” of the cutter

tooth towards the “outside”.

Do not allow the file to touch the chain as you bring it

back to re-position it. Each cutter tooth should be filed

with the same number of strokes.

3 The file should be held horizontally to the cutter tooth

being sharpened.

4 Best results to obtain a precise sideways angle can be

obtained by holding the file so that it rises 0,5 mm above

the top face of the cutter tooth.

5 DEPTH GAUGE

Correct depth gauge height is vital to ensure maximum

chain life and cutting efficiency.

The height of the depth gauge should be lowered as the

cutter tooth is filed back; this height should be checked

every 4 or 5 sharpenings.

The best way to do this is to use a flat file and a depth

gauge tool.

The correct setting is 0.65 mm below the top edge of the

cutter tooth.

The cutter tooth depth gauge should then be rounded (D).

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