Raider RD-GCS31 Manuel D'instructions page 20

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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 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 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 remains in the guiding groove of the guide bar .
Use a screwdriver to turn the chain tension adjustment screw 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 and throttle lever (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.
Stop pressing the saw at the end of the cut to avoid losing control over the tool.
When the cutting has been finished release the throttle lever and allow the engine to run idle.
Switch off the engine before putting the chain saw away.
Keeping high speed of the engine when not cutting wood causes unnecessary losses and wear of parts.
4.11. Protection against recoil.
Recoil is movement of the guide bar of the chain saw up and/or back, which happens when the part of the chain on the
guide bar tip encounters an obstacle.
Ensure the processed material is firmly fixed.
Use clamps to fix the material.
Hold the chain saw with both hands when starting up and during operation.