F.F. Group GCS 441 PRO Notice Originale page 24

24 | English
2. OILING PORT
Dismount the guide bar and check the oiling outlet for
clogging. (Fig. 25.1).
3. GUIDE BAR
When the guide bar is dismounted, remove sawdust
in the bar groove and the oiling inlet. Grease the nose
sprocket from the feeding port on the tip of the bar
(Fig. 26.2-3).
4. OTHERS
Check for fuel leakage and loose fastenings and dam-
age 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
overheating 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
replace with a new one if needed.
IMPORTANT
After removing the filter, use a pinch to hold the
f
end of the suction pipe.
When assembling the filter, take care not to al-
f
low filter fibers or dust inside the suction pipe.
3. SPARK PLUG
Clean the electrodes with a wire brush and reset the
gap to 0.6 – 0.7mm as necessary. Spark plug type:
CHAMPION RCJ7Y or NGK BPMR7A (Fig. 27).
4. SPROCKET
Check for cracks and for excessive wear interfering
with the chain drive. If the wear is considerable, re-
place it with new one. Never fit a new chain on a worn
sprocket, or a worn chain on a new sprocket (Fig. 28).
5. FRONT AND REAR DAMPERS
Replace if adhered part is peeled or crack is observed
on the rubber part. Replace if the inside of the rear
damper metal has been beaten by the stopper bolt
and the clearance of the metal increased
IMPORTANT
Use only the spare parts which mentioned in this man-
ual. Use of other spare part can cause serious injury.
SAW CHAIN
WARNING It is very important for smooth and safe
operation to keep the cutters always sharp.
GCS 441 PRO | GCS 450 D PRO
Your cutters need to be sharpened when:
Sawdust becomes powder-like.
f
You need extra force to saw in.
f
The cut way does not go straight.
f
Vibration increases.
f
Fuel consumption increases.
f
CUTTER SETTING STANDARDS:
Be sure to wear safety gloves.
Before filing:
Make sure the saw chain is held securely (Fig. 29,
f
30).
Make sure the engine is stopped.
f
Use a round file of proper size for your chain.
f
Chain type: Oregon 21BPX
File size: 3/16" (4.8mm)
Place your file on the cutter and push straight for-
ward. Keep the file position as illustrated.
After every cutter has been set, check the depth
gauge and file it to the proper level as illustrated.