Manual McCulloch PRO MAC 61 59CC (page 11 of 13) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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B) Use wedges to control the moment and direction of the

fall.

3 When the tree starts to fall, walk away along your preplan-

ned escape path.

CUTTING FALLEN TRUNKS

4 A) 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.

Finnish 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

We suggest carburetor adjustments are made by an authori-

zed servicing dealer.

The carburetor has three adjustment screws:

• 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 1-1/4 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 clockwi-

se without forcing .

Then open screw 3/4-1 full turn (counterclockwise) .

If the engine speed is too high, open the screw about 1/8

turn (counterclockwise).

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

govern idle speed adjust as necessary.

CAUTION: increased idle speed may cause chain movement.

The carburetor is adjusted for normal operation during pro-

duction. When considerable changes of altitude require a

supplementary adjustment, contact an authorised service sta-

tion which offers the latest in tools, parts and technical assi-

stance.

ROUTINE MAINTENANCE

Ensure engine is always switched off before any kind of

maintenance operation.

CHAIN: Check tension regularly. A new chain will require

more frequent adjustment. Loosen retention nuts. Tighten

chain (see assembly instructions). Tighten retention nuts and

adjust.

1 BAR

– Clean the bar groove (K) and check the lubrication holes

(L) in the bar to ensure that they are not clogged.

– Grease sprocket periodically. Rotate sprocket and

repeat.

– Rotate bar periodically to maximise bar life.

2 AIR FILTER

– A dust clogged air filter may cause carburetor problems.

This may prevent the engine from reaching its maximum

r.p.m. and cause high fuel consumption.

– Remove cover.

– Wash filter in petrol (do not use fuel which is mixed with

oil).

– The filter can also be cleaned with compressed air.

– Replace filter if damaged or if it does not seal tightly in

the air box.

3 SPARK PLUG

Remove and clean the spark plug every 30 hours. Check

the electrode gap (0,5/0,6 mm. - 0.025 inches).

– Replace spark plug about every 100 working hours or

whenever it is extremely encrusted.

– Heavily encrusted electrodes can result from an incorrect

carburetor setting or from wrong fuel mixture (too much

oil in the fuel mix) or a poor quality of oil in the fuel mix.

Check and correct.

4 OIL FILTER

The oil filter is on the end of the oil suction hose inside the

oil tank.

Remove the chain catcher by twisting it anticlockwise and

remove the oil filter. Use a piece of bent wire or long forceps.

To remove deposits from the oil tank half-fill it with kerose-

ne or petrol and shake thoroughly. Drain off and fill the

tank with fresh saw chain oil.

Never use waste oil.

5 FUEL FILTER

To change fuel filter remove the tank cap and pull out the

filter with a piece of bent wire or long forceps. Replace the

filter as shown in the illustration and reposition it.

It is recommended to replace the fuel filter at least once a

year.

CHAIN BRAKE

– WARNING: Contact your service dealer if anything

appears wrong with your chain brake. Do not disassem-

ble or manipulate the mechanism of the chain brake.

– Clean the brake mechanism periodically (without disas-

sembling it) and control the wear of the band visually.

• PERIODICALLY: It is important to clean the saw thoroughly

particularly around cylinder fins to avoid overheating of the

engine.

• LONG STORAGE: Empty fuel and run engine until dry.

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McCulloch PRO MAC 61 59CC Manual

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