Raider RD-GCS20 Manuel D'instructions page 22

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B. Hazard zones.
С. Withdrawal division.
The cutting is done by making three notches. Steering is done first notch, including upper and lower notch, and then
ends with the felling notch. By proper placement of the three notches can be controlled direction. Make an initial upper notch
at an angle, one third of the trunk diameter deep. Make a horizontal notch lower, to join the top. Perform overthrown notch
horizontally from the opposite side of the guide and a little higher than lower surface of the notch.
Insert wedges on time to avoid pinching of the saw chain.
Fell the tree by driving a wedge rather than cutting through the whole trunk.
When felling trees observe all safety rules and do as follows:
When the chain is pinched, switch off the chain saw and release the chain with a wedge. Wedge should be made of wood
or plastic. Never use steel or cast iron wedge.
Falling tree may pull other trees.
Danger zone radius is 2.5 height of the falling tree.
If the operator is inexperienced or amateur it is recommended to have training rather than gaining the experience without
supervision.
Do not fell trees when:
Conditions in danger zone cannot be determined due to fog, rain, snow or darkness.
Line of tree felling cannot be determined due to wind or wind blows.
4.14. Cutting through trunks.
Press the bumper spike (19) against the material and make a cut.
If the cutting cannot be finished even after the chain saw range is fully utilized, do as follows:
Move the guide bar back from the cut material to a certain distance (with cutting chain still operating) and move the main
handle (12) a little down, support the bumper spike (19) and finish the cut by lifting the main handle (12) a little.
4.15. Cutting a trunk lying on the ground.
Always keep good feet and ground grip. Do not stand on the trunk.
Watch out for possibility of the trunk rotation.
Observe manual guidelines related to work safety to avoid the chain saw recoil.
Always finish cutting at the side opposite to compressive stress to avoid pinching the chain in kerf.
Before starting to work check the stress direction in the trunk that is to be cut, to avoid pinching chain of the saw.
To eliminate stress, the first cut should be made at the tension side.
When cutting a trunk that is lying on the ground, first make a cut deep 1/3 of the trunk diameter, then turn the trunk over
and finish cutting at the opposite side.
When cutting a trunk that is lying on the ground, do not allow to sink the cutting chain into the ground under the trunk.
Negligence may cause immediate damage to the chain.
When cutting trunk that is lying on the slope, the operator should always be at the slope side above the trunk.