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GCS 425T PRO
WARNING
The saw chain has very sharp edges. Use protective
gloves for safety.
1.
Pull the guard towards the front handle to check that
the chain brake is not on.
2.
Loosen a nut (Fig. 2.1) and remove the clutch cover
(Fig. 2.2.) Fix the spiked bumper, if not already as
-
sembled, (Fig. 2.3) with two screws (Fig. 2.4) on the
forefront of the chain saw (Fig. 2).
IMPORTANT
The spiked bumper belongs to the chain saw. It must be
screwed up on chain saw before the initial use. Remove
the spacer (Fig. 3.1) from chain saw (Fig. 3).
3.
Fit the guide bar (Fig. 4.2) to the power unit, and then
push the guide bar toward the clutch (Fig. 4).
4.
Gear the chain to the sprocket while fitting the saw
chain around the guide bar (Fig. 5).
Note
Pay attention to the correct direction of the saw chain.
5.
Adjust the position of chain tensioner nail, and then
insert the tensioner nail in the lower hole of the
guide bar (Fig. 6.3). Mount the clutch cover to the
power unit and fasten the mounting nut to finger
tightness. (Fig. 7). While holding up the tip of the
bar, adjust the chain tension by turning the tensioner
screw until the tie straps just touch the bottom side
of the bar rail (Fig. 8).
6.
Tighten the nut securely with the bar tip held up
(12 ~ 15 Nm). Then check the chain for smooth ro
-
tation and proper tension while moving it by hand.
If necessary, readjust with the chain cover loose.
Turn the tensioner screw (Fig. 6.4) clockwise to
tighten the chain, turn the tensioner screw (Fig. 6.4)
counter-clockwise to loosen the chain.
7.
Check the tension of the saw chain. Use your hand
to lift the chain link which positions on the middle of
cutting length up with approximate 10N force. If the
chain link goes out of the rail of guide bar entire, you
need to retighten the chain.
IMPORTANT
It is very important to maintain the proper chain tension.
Rapid wear of the guide bar or the chain coming off eas
-
ily can be caused by improper tension. Especially when
using a new chain, take good care of it since it should ex
-
pand when first used.
FUELING AND LUBRICATION
The chainsaw is equipped with 2-stroke engine; there
-
fore, oil mixture of petrol 95 RON and 2-stroke oil, must
always being used. It is very important to pay attention
with the fuel mixture that you use, since accurate mix-
ture of oil and fuel must be obtained. Small quantities
of oil and fuel mixture with small inaccuracies, can affect
the ratio of mixture, which may lead to engine overheat
and serious damages in the engine. Mixture with fuel of
higher Octane is only recommended to be used, when
working continuously at high revs.
Two stroke oil
Especially formulated 2-stroke oil for air cooled 2-stroke
engines must be used. Do not use 2-stroke oil intended
for water cooled engines use. Never use poor quality of
oil and 4-stroke engine oil.
Mixing ratio
For best results and performance, the mixing ratio is 2%
with oil class JASO FC or ISO EGC at minimum, formulat
-
ed for air cooled 2-stroke engines.
Petrol, liter
2-stroke oil, liter 2% (50:1)
5
0,10lt (100ml)
10
0,20lt (200ml)
Always use clean container for fuel before mixing the
fuel. Mix and shake the fuel mixture thoroughly, before
filling the machine’s fuel tank. Do not use fuel mixture
stored for more than a month. The fuel tank of the ma
-
chine must be emptied before storage.
Chain oil
Use special chain oil with good adhesion characteristics.
Waste engine oil must never being used, since it can be
dangerous for the user and can lead to the oil pump
damage. The chainsaw has been designed in such a way,
where the oil tank must be filled up every time the fuel
tank is getting empty.
Note
Always switch the engine off and let it cool down, before
refueling. Never smoke during the refueling process.
Note
Never operate the chainsaw with 100% of petrol, with-
out adding 2-stroke oil.
STARTING ENGINE
1.
Untwist and remove the fuel cap and oil cap.
2.
Fill the fuel tank (Fig. 9.1) and oil tank to 80% of the
full capacity.
3.
Fasten the fuel cap and oil tank (Fig. 9.2) securely and
wipe up any fuel spillage around the unit.
4.
Put the switch (Fig. 10.1) to the “I” position.
5.
Turn the choke knob counter-clockwise (Fig. 10.2).
The choke will close and the throttle lever will then
be set in the starting position.
6.
Continuously push the primer bulb (Fig. 11.1) until
fuel comes in the bulb.
Note
When restarting immediately after stopping the engine.
Set choke in the open position. Once the choke knob has
been turned counter clockwise, it will return to the run
-
ning position if you press the throttle trigger (Fig. 12.1)
or turn the choke knob clock-wise with your finger. When
you wish to return the choke knob to the operating posi
-
tion, press the throttle trigger (Fig. 12.1) instead.
7.
Push the front handle guard down toward the front
to activate the chain brake.
8.
While holding the saw unit securely on the ground,
pull the starter rope vigorously (Fig. 13).
9.
When firing occur, turn the choke knob clockwise
manually. Then pull the starter rope again until the
engine starts. Press the throttle trigger immediate
-
ly to allow the throttle return to the idle position.
Setting the choke manually can temporarily set the
throttle in a partially open position to aid starting.
10.
Pull up the front handle guard toward the front han-
dle 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 al
-
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