Raider RD-ECS22 User Manual page 24

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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.
4.15. Cutting through trunks.
Press the bumper spike 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 (3) a little down, support the bumper spike and finish the
cut by lifting the main handle (3) a little.
4.16. 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.
4.17. Cutting a trunk lifted above the ground.
In case the log is supported or placed on stable sawing horse, depending on the place of
operation, make the cut 1/3 of the trunk diameter deep on the side under tension and finish
cutting on the opposite side.
4.18. Trimming and cutting bushes and tree branches.
Start cutting branches of a felled tree at its base and continue towards top of the tree. Do
small branches with a single cut.
First, check which way the branch bends. Then make a cut from the inside of the bend and
finish cutting on the opposite side. Be careful, the branch being cut may spring back.