McCulloch PRO MAC 72 Chainsaw User Manual


 
7
ENGLISH
UK
CHAIN: Check tension regularly. A new chain
will require more frequent adjustment. Loosen
retention nuts. adjust chain (see assembly
instructions). Tighten retention nuts.
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).
- 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 end of the oil suction hose inside
the oil tank .To clean and replace the filter pull
it out through the oil tank filter opening. Use a
piece of bent wire or long forceps. To remove
deposits from the oil tank half fill it with kerosene
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 disassemble or manipulate the
mechanism of the chain brake.
- Clean the brake mechanism periodically
(without disassembling 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.
CHAIN BRAKE
TESTING
Your chainsaw is fitted with an automatic safety
chainbrake designed to stop the chain in milliseconds
in case of kickback. Always hold the saw firmly in
both hands.
The chain brake does not provide total protection
if the machine is used without taking the necessary
precautions or carrying out proper maintenance.
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 at idle by engaging the brake (see
below).
Always release the brake before starting.
Kickback may occur if the end of the bar (see
illustrated angle) touches any solid object or if the
top of the bar becomes pinched in the wood.
Never attempt to start a cut with the end of the
bar.
Kickback is a violent upward or rearward
movement of the bar and may cause you to lose
control of the machine.
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.
CAUTION: Initial contact with the wood may
occasionally cause the chain to buck, and if the
chain teeth are not correctly sharpened, the chain
may skate on the wood.
TESTING THE CHAIN BRAKE :
1 The chain brake is disengaged when brake
lever is pulled back and locked (chain can
move).
2 The chain brake is engaged when brake lever
is in forward position (chain is stopped).
I