Raider RD-GCS19 Manuel D'instructions page 17

MIN position - oil flow decreases.
MAX position - oil flow increases.
When cutting hard and dry wood and using whole length of the guide bar when making a cut, set the oil feed adjustment
screw (7) to the MAX position. You can reduce amount of oil supplied by turning oil feed adjustment screw (7) to MIN position,
when cutting soft and damp wood, or when only part of the working length of the guide bar is used. Depending on ambient
temperature and amount of oil supplied, you can operate the chain saw for 15 to 40 minutes per one filling the oil tank (tank
capacity is 260 ml). Oil tank should be almost empty when the fuel tank is emptied. When filling the fuel remember about filling
oil tank as well.
4.4. Chain lubricants.
Durability of chain and guide bar depends heavily on quality of lubricant. Use only lubricants, which are designed for chain
saws. Never use regenerated or previously used oil for chain lubrication.
4.5. Chain guide bar.
Guide bar (14) 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.
4.6. 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 authorized service
workshop.
4.7. 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 (14). Switching the chain brake stops the chain movement
in 0.12 sec.
4.8. 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 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.
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.
4.9. 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. Ensure the chain (15) remains in the guiding groove of the guide bar (14). 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). Tighten firmly the guide bar fixing nuts. Do not over-tension the chain. Adjustment of
overly heated chain may lead to excessive tension when cooling down.
4.10. 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. 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 (8) (wait until engine reaches its full speed before starting to cut). Keep
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