F.F. Group GCS 428T PRO Original Instructions Manual page 14

14 | English
handle to release brake. Then, allow the engine
to warm up with the trigger pulled slightly.
WARNING
Before you start the engine, make sure
the saw chain is not contacting anything. Make sure the
chain brake always 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.
If you are tired do not use the chainsaw.
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Do not use the chainsaw with bad weather.
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Always hold the chainsaw with both hands (Fig. 14),
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while the engine is running.
Make sure that the area around you is free from
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obstacles, which may interrupt you while you are
cutting or, they may be hurt from falling trees or
branches.
Make sure that you are standing firmly and that there
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is nothing which can make you losing your balance.
Be aware that kickback accidents mostly happen
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during limbing.
Never cut at a height over your shoulders and never
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cut with the nose of the bar (Fig. 25).
Never work standing on a ladder, in a tree or where
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you do not have firm ground to stand on (Fig. 26).
Use high revs on the engine of the chainsaw, while
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cutting.
Use idle speed after every cut.
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Cutting on the push stroke may be dangerous, since
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a kickback may happen.
Make sure that the chain is well tensioned, so as not
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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.
Make sure that the wood will not split during cut.
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Make sure that the chain will not touch the ground
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during cut.
SAFETY RULES ON HOW TO AVOID KICK-
BACK
Kickback is a very sudden movement of the chain-
saw. 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 con-
tacting 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-operating procedures and daily
maintenance routines. Improper maintenance may re-
sult 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 wa-
ter. 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 nut (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 and the oiling inlet.
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
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 end
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of the suction pipe.
When assembling the filter, take care not to allow
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filter 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. Spark plug
Type: CHAMPION RY4C / TORCH CMR6A
(Fig. 23)
GCS 428T PRO