Bedienungsanleitung McCulloch PRO MAC 72 (Seite 11 von 15) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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USAGE

IMPORTANT. Before using a chain saw read

carefully the Operator’s Manual and all safety

precautions carefully.

FELLING TREES.

- Make sure that there are no bystanders or

animals in the work area.

- Study the direction of the fall of the tree and

then plan your exit path away from the planned

direction of fall.

- Don’t fell trees when there is a strong wind.

1 Clear the tree base of interfering limbs and

brush. Clean the work area from stones or

other objects which could damage the chain.

If the tree has large protruding roots, remove

them before felling (see illustrations).

2A) Cut a felling notch (A) of 45°on the side

you want the tree to fall to a depth of about one

third of the trunk diameter (d).

Then make a felling cut (B) about 5 cm higher

than the felling notch on the opposite side of

the tree. Make sure that the felling cut does not

go right through the trunk. A hinge (C) must

always be left to provide control over the

direction of the fall.

B) Use wedges to control the moment and

direction of the fall.

3 When the tree starts to fall, walk away along

your preplanned escape path.

CUTTING FALLEN TRUNKS.

4A) Limbing thick branches. For limbing and

bucking leave the lower limbs to support

the log off the ground.

B) Supported at one end only. Begin with a

bottom cut made by the upper side of the bar

(A); the depth of the cut should be about one

third of the log diameter (A). Finish with a top

cut (B) meeting the first one. With this technique

splitting, cracking can be avoided.

C) Supported at both ends. Begin with a top

cut about one third of the log diameter. Then

finish with a bottom cut (B) meeting the first

one. This technique avoids the risk of pinching

the bar in the log.

D) If the log is supported along its whole

length it may be cut normally from above. Take

care not to touch the ground with the chain.

• When working on a slope always stand on the

uphill.

• When cutting prepared timber, use clamps or

chocks to secure work.

• Use extreme caution when cutting small size

brush and saplings which may catch the chain

and pull you off balance.

CARBURETTOR

ADJUSTMENT

N.B. We suggest carburetor adjustments are

made by an authorized service dealer.

The carburetor has three adjustment

possibilities:

• L: The needle screw (L) governs the fuel flow

at low speed and also the acceleration from

low to full speed.

To set screw (L): close screw (L) turning it

clockwise without forcing

. Then open screw

1 full turn

(counterclockwise).

If acceleration is not smooth, open

another

1/8 turn to increase fuel flow.

• H: The needle screw (H) governs fuel flow at

high speed (throttle valve fully open).

To set hi speed screw (H): close screw (H)

turning it clockwise

without forcing .

Then open screw 1-1/2 full

turn (counter-

clockwise) .

If the engine speed is too high (the maximum

speed with bar and chain on should not

exceed 11.500 min

-1

), open the screw

about 1/8 turn (counterclockwise).

• I: The (I IDLE) screw controls the throttle

opening to govern idle speed (2.500 min

-1

CAUTION: increased idle speed may cause

chain movement. The carburator is adjusted

for normal operation during production. Wen

considerable changes of altitude require a

supplementary adjustment, contact an

authorised service station which offers the

latest in tools, parts and technical assistance.

ROUTINE

MAINTENANCE

Ensure engine is always switched off before any

kind of maintenance operation.

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