F.F. Group GCS 425T PRO, Original Instructions Manual

Page: 14 / 64

| English 14 GCS 425T PRO
ways is activated before each starting.
CHECKING OIL SUPPLY
After starting the engine, run the chain at medium speed
and see if chain oil is scattered off as shown in the Fig. 14.
IMPORTANT
The oil tank should become nearly empty by the time
fuel is used up. Be sure to refill the oil tank every time
when refueling the saw.
OPERATIONAL CHECK OF THE CLUTCH
Before each use, you shall confirm that there is no chain
movement when the chain saw running at idling speed.
WORKING TECHNIQUES
Follow the below mentioned points, in order to carry out
your sawing work safely, without accidents and injuries.
f
If you are tired do not use the chainsaw.
f
Do not use the chainsaw with bad weather.
f
Always hold the chainsaw with both hands (Fig. 25),
while the engine is running.
f
Make sure that the area around you is free from obsta -
cles, which may interrupt you while you are cutting or,
they may be hurt from falling trees or branches.
f
Make sure that you are standing firmly and that there
is nothing which can make you losing your balance.
f
Be aware that kickback accidents mostly happen
during limbing (Fig. 27).
f
Never cut at a height over your shoulders and never
cut with the nose of the bar (Fig. 25).
f
Never work standing on a ladder, in a tree or where
you do not have firm ground to stand on (Fig. 26).
f
Use high revs on the engine of the chainsaw, while
cutting.
f
Use idle speed after every cut.
f
Cutting on the push stroke may be dangerous, since a
kickback may happen.
f
Make sure that the chain is well tensioned, so as not
jam during cutting. If the chain jams during the cut,
stop the engine of the chainsaw immediately. Use a
lever to lift up the cut wood and free the chainsaw.
f
Make sure that the wood will not split during cut (Fig.
28).
f
Make sure that the chain will not touch the ground
during cut (Fig. 29).
SAFETY RULES ON HOW TO AVOID KICKBACK
Kickback is a very sudden movement of the chainsaw.
It happens when the user cut an object with the upper
quadrant of the bar nose and the chainsaw bar jumps
off the object, towards the user. Kickback may become
very dangerous for the user and therefore, be extremely
cautious when limbing and avoid contacting the log with
the nose of the bar. Moreover, be very cautious with the
limbs under tension, since they can move backwards and
towards you like a spring, which can cause you serious
injury.
MAINTENANCE
WARNING
Before cleaning, inspecting or repairing your unit, make
sure that engine has stopped and is cool. Disconnect the
spark plug to prevent accidental starting. Follow the
instructions to carry out regular maintenance, pre-op-
erating procedures and daily maintenance routines. Im -
proper maintenance may result in serious damage to the
machine.
MAINTENANCE AFTER EACH USE
1. AIR FILTER
Dust on the cleaner filter can be removed by washing in
a solution of household detergent and warm water. To
clean dirt in the meshes, remove the cleaner cover and
brush in gasoline. When using compressed air, blow from
the inside. (Fig. 15.1) air filter buckle (Fig. 15.2) air filter
cover.
2. OILING SPRAYER
Dismount the guide bar and check the oiling outlet for
clogging. (Fig. 19.1) Oiling outlet (Fig. 19.2) Oiling inlet
3. GUIDE BAR
When the guide bar is dismounted, remove sawdust in
the bar groove (Fig. 21) and the oiling inlet (Fig. 18).
4. OTHERS
Check for fuel leakage and loose fastenings and damage
to major parts, especially handle joints and guide bar
mounting. If any defects are found, make sure to have
them repaired before operating again.
PERIODICAL SERVICE POINTS
1. CYLINDER FINS
Dust clogging between the cylinder fins will cause over -
heating of the engine. Periodically check the fins after
removing the clutch cover, and then use pressure air to
clean the cylinder fins.
2. FUEL FILTER
(a) Using a wire hook, take out the filter from the filler
port.
(b) Disassemble the filter and wash with gasoline, or re -
place with a new one if needed.
IMPORTANT
f
After removing the filter, use a pinch to hold the end
of the suction pipe.
f
When assembling the filter, take care not to allow fil -
ter fibers or dust inside the suction pipe.
3. SPARK PLUG
Clean the electrodes with a wire brush and reset the
gap to 0.65mm as necessary (Fig. 23). Spark plug type:
TORCH CMR6A
4. SPROCKET
Check for cracks and for excessive wear interfering with
the chain drive. If the wear is considerable, replace it with
new one. Never fit a new chain on a worn sprocket, or a
worn chain on a new sprocket (Fig. 24).
5. FRONT AND REAR ABSORBER SPRINGS
Replace if the front or rear absorber spring is damaged.
IMPORTANT
Use only the spare parts which named in this manual. Use
the other spare part can cause serious injury.