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Never use regenerated or previously used oil for chain
lubrication.
CHAIN GUIDE BAR
Guide bar (20) is exposed to heavy wear especially in tip
and bottom part. To prevent side wear due to friction, it is
recommended to turn over the guide bar every time the chain
is sharpened. Clean the guide bar groove and oil holes on that
occasion. Guide bar groove is rectangular. Check the groove
against wear. Put rule to guiding strip and outer surface of a
chain tooth. If you observe distance between, the groove is
correct. Otherwise the guide bar is worn out and needs to be
replaced.
CHAIN WHEEL
Driving chain wheel is subject to especially heavy wear. Replace
the chain wheel when you observe clear signs of wear of wheel
teeth. Worn chain wheel additionally reduces durability of chain.
Chain wheel should be replaced by authorised service workshop.
ADJUSTMENT OF CARBURETTOR
Chain saw carburettor is factory set, however it may require
precise adjustment when operating conditions change. Before
starting to adjust the carburettor ensure new air filter and fuel
filter are installed and tank is filled with appropriate fuel blend.
Adjust the carburettor with guide bar and chain installed.
• Screw in both adjustment screws (L and H) (16) until stop (do
not overtighten) (fig. G).
• First, unscrew two adjustment screws (16) as specified below:
-
L screw: by 1 1/4 of a turn
-
H screw: by 1 3/8 of a turn
• Start up the engine and allow it to heat up while holding
throttle lever (11) pressed in half.
• After the engine has been heated, release pressure on the
throttle lever (11) and allow the engine to run slowly.
• Turn the screw (L) slowly clockwise until idle run achieves its
maximum speed, then turn the screw counter-clockwise by
1/4 of a turn.
• Turn low speed adjustment screw (T) (17) counter-clockwise
until the chain stops moving. When slow speed appears to be
too low, turn the screw clockwise (fig. G).
Avoid touching the muffler. Hot muffler may cause severe
burns.
CHAIN BRAKE
The saw features automatic brake, which stops the chain in
case of recoil during chain saw operation. The brake engages
automatically when force of inertia is applied to a weight located
inside the brake casing. The chain brake can also be switched on
manually, when the brake lever (6) is moved towards the guide
bar (20). Switching the chain brake stops the chain movement
in 0.12 sec.
BRAKING CHECK
Ensure the brake operates correctly before each use of the saw.
• Put operating saw on the ground and open the throttle fully
for 1 – 2 seconds to allow the saw engine to operate at its
maximum speed.
• Push the brake lever (6) forward. The chain should stop
immediately.
• In case the chain stops slowly or does not stop at all, replace
the brake band and clutch drum before using the chain saw
again.
• To release the brake, pull the brake lever (6) towards the
main handle (12) so you can hear sound typical of blockade
snapping.
Ensure the chain brake operates correctly and the chain is
sharp. It is very important for keeping potential recoil at a safe
level.
CHECKING BRAKE ENGAGEMENT
During this check the saw engine should be switched off.
• Lift the saw while holding the front handle (5) and main
handle (12) approximately 35 cm above wooden object.
• Let the front handle (5) go and allow the guide bar to tilt under
its own weight and touch the wooden object (fig. H).
• At the contact with the wooden object, the chain brake should
engage (brake lever (6) moves forward to the ON position).
Ensure the chain brake operates correctly before starting any
task. In case the brake does not operate efficiently, adjust it or
repair in authorized service site.
In case the engine operates at high speed with the chain brake
switched on, the saw clutch will overheat. When the chain
brake engages during operation of the engine, release the
throttle lever immediately and keep engine speed at low level.
CHAIN TENSION ADJUSTMENT
Cutting chain tends to lengthen during operation due to higher
temperature. Longer chain loosens and may slip off the guide
bar.
• Loosen the guide bar fixing nuts (7).
• Ensure the chain (21) remains in the guiding groove of the
guide bar (20).
• Use a screwdriver to turn the chain tension adjustment screw
(8) clockwise, until the chain is strained appropriately (it
should slightly hold the guide bar in horizontal position).
• Check the chain tension again (it should be possible to lift the
chain by approximately 3 – 4 mm in the middle of the guide
bar) (fig. I).
• Tighten firmly the guide bar fixing nuts (7).
Do not over-tension the chain. Adjustment of overly heated
chain may lead to excessive tension when cooling down.
OPERATING THE CHAIN SAW
• Before starting any planned task, familiarize yourself with
section describing safe rules for chain saw operation. It is
recommended to gain experience by cutting waste wood
pieces. It will also allow to find out the chain saw possibilities.
• Always observe safety regulations.
• Use the chain saw only for cutting wood. Cutting other
materials is forbidden.
• Intensity of vibrations and recoil change depending on the
type of wood being cut.
• Do not use the chain saw as a lever to lift, move or split
objects. When the chain is pinched in wood, switch off the
engine and drive wooden or plastic wedge into the processed
piece to release the chain saw (fig. J). Start the tool again and
commence cutting carefully.
• Do not fix the saw to a stationary work station.
• Attaching other devices, which are not allowed by the chain
saw manufacturer, to the chain saw drive is forbidden.
• It is not necessary to apply big force to the chain saw when
using the tool. Apply light pressure only while the engine
operates with the throttle fully opened.
When the chain saw is pinched in kerf during cutting, do not
remove it forcefully. It may cause loss of control over the chain
saw, operator injury and/or damage to the chain saw.
Release the chain brake before starting to work.
• Press the throttle lever lock (1) and throttle lever (11) (wait
until engine reaches its full speed before starting to cut).
• Keep maximum speed for the whole time.
• Allow the chain to cut wood. Press down the saw lightly (fig.
K).
• Stop pressing the saw at the end of the cut to avoid loosing
control over the tool.
• When the cutting has been finished release the throttle lever
(11) and allow the engine to run idle.
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