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GCS 425T PRO
IDENTIFICATION
1.
Saw chain
2.
Guide bar
3.
Front hand guard
4.
Throttle trigger
5.
Throttle trigger lock lever
6.
Rear handle
7.
Primer bulb
8.
Air filter cover
9.
Lock buckle
10.
Starter handle
11.
Spark plug
12.
Front handle
13.
Oil tank
14.
Fuel tank
15.
Guide bar scabbard
16.
Engine switch
17.
Chain catcher
18.
Chain tension screw
19.
Clutch cover
20.
Choke knob
GENERAL SAFETY RULES
Read this manual carefully before using the chainsaw
and take care of all safety instructions, in order to pre
-
vent any injury and damage. Please forward these safety
instructions to any other person who uses the chainsaw.
Always use your common sense to avoid all situations
considered beyond your capability. Do not hesitate to
contact with us if you have any questions about the use
of chainsaws. We will provide you with advice as well as
help, on how to use the chainsaw safely.
PERSONAL PROTECTIVE EQUIPMENT
Always use personal protective equipment such as safe-
ty glasses, helmet with visor, protective gloves, protec-
tive clothes from chain cuts, protective boots and hear-
ing protection.
SAFETY EQUIPMENT ON THE CHAINSAW
Hand guard and chain brake
The chainsaw is equipped with a chain brake (Fig. 16) de
-
signed to stop the movement of the chain, in the event
of kickback. The chain brake has been designed in order
to prevent and reduce the risk of accidents.
Make sure that the kickback zone of the bar never touch
-
es any objects. The chain brake can be activated either
manually by hand (push forward) or automatically by the
inertia, when the chainsaw hits an object downwards.
The activation of the chain brake is achieved with very
sudden and violent movement of the hand guard, due
to kickback.
The hand guard is also used to protect the hand holding
the front handle, from the risk of hitting the chain, if the
hand loses the grip from the handle.
The chain brake is also used as a parking brake and must
be engaged before starting the chainsaw. The chain
brake must be deactivated immediately when the chain
-
saw starts up.
Chain catcher
The chain catcher is used to catch the chain if it jumps out
of the bar, due to inappropriate tension of the chain. The
chain catcher protects the user from serious injury. If the
chain catcher is hurt, it must be replaced with new one.
Vibration system
The chainsaw is equipped with anti-vibration elements,
to minimize the vibration and make the operation eas
-
ier. The anti-vibration system also protects the user
from excessive vibration, which can result to circulatory
damage or nerve damage. The symptoms of circulatory
damage are loss of fingers feeling, pain, loss of strength
and changes on skin color. The vibration generated by
the engine and the cutting equipment is being reduced
and prevented to be transferred on the handles of the
chainsaw. The harder the cutting wood is, the higher vi
-
bration level is and the sharpened the chain is, the lower
vibration level is.
CUTTING EQUIPMENT
The chain teeth must always be in a well sharpened
condition. Damaged or not properly sharpened chain,
may increase the risk of accidents. Manage and main
-
tain the correct depth gauge, since too large clearance
increases the risk of kickback. Manage and maintain
the correct tension of the chain. Slack chain may lead to
chain jump out of the bar and wear on the bar, chain and
drive sprocket. Manage and lubricate properly the cut
-
ting equipment. Poor lubrication on the chain may lead
to the breakage of the chain, wear on the bar and drive
sprocket.
Chain sharpening
If you are not familiar with sharpening your chainsaw
chain, we propose to sharpen it professionally at your
nearest service center.
Always use protective glasses and gloves when sharp-
ening the chain. Use a round file to sharpen the cutters
with outward strokes. After sharpening the cutters,
make sure that they have the same width and length.
The depth limiter must be lowered after sharpening the
cutters, using a flat file.
Chain tensioning
The chain tension is very important and must be checked
before operating the chainsaw. The better the chain is
tensioned, the best cuts you make! (See fitting bar and
chain)
Chain lubrication
The chainsaw is equipped with automatic chain lubrica-
tion system. Always use chain oil indicated for chain and
bar lubrication, with good adhesion to the chain. Waste
engine oil must never being used, since it can be danger-
ous for the user and can lead to the oil pump damage.
INSTALLING GUIDE BAR AND SAW CHAIN
A standard saw unit package contains the items as
shown below.: (Fig. 1)
(Fig. 1.1) Power unit (Fig. 1.2) Saw chain
(Fig. 1.3) Guide bar (Fig. 1.4) Guide bar scabbard
(Fig. 1.5) Plug wrench
Open the box and install the guide bar and the saw chain
on the power unit as follows.
ENGLISH
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