Raider RDP-GCS21, User Manual

Page: 23 / 158

23
4.16. 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.
4.17. 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.
When trimming tree branches, always cut downward to enable free fall of cut branch. However, sometimes undercutting
the branch from the bottom may be helpful.
Be very careful when cutting a branch that may be under stress. Such branch may spring aside and hit the operator.
Do not cut branches when climbing up the tree. Do not stand on ladder, platforms, logs or positions that may cause loss of
balance and control over the chain saw. Do not cut above level of your shoulders. Always hold the chain saw with both hands.
5. Operation and maintenance.
Ensure the engine is switched off and is cold before cleaning, checking or repairing the chain saw. Disconnect wire from
the ignition plug to prevent accidental start up of the engine.
5.1. Storage.
Empty the fuel system before deciding to store the tool for more than one month.
Drain fuel from the fuel tank, start the engine and allow it to use all remaining fuel and stop working.
Use new fuel each season. Never use any cleaning agents on fuel tank, it may damage the engine.
Pay special attention to keep the ventilation holes of the engine casing pervious.
Clean plastic parts with mild detergent and a sponge.
You can proceed with maintenance actions only described within this instruction manual. Any other action can be carried
out only by authorized service.
Do not make any changes in chain saw construction.
When not in use, chain saw should be stored clean, on flat surface, in dry place and beyond reach of children.
When storing it is important to avoid deposition of rubber particles in basic parts of the fuel system, such as carburettor,
fuel filter, fuel line and fuel tank. Fuels with alcohol additives (ethanol or methanol) may absorb moisture and that during
storing causes separation of fuel blend ingredients and formation of acids. Acidic petrol may damage the engine.
5.2. Air filter.
Dirty air filter reduces efficiency of combustion engine and causes increase of fuel consumption. Clean the air filter after
each 5 hours of the saw operation.
Clean the air filter lid (4) and its surroundings, so the dirt does not get into carburettor chamber after the lid is removed.
Unscrew knob for air filter lid (3) and remove air filter lid (4).
Remove air filter.
Use water with soap to clean the filter, wash with clean water and dry thoroughly.
Install air filter. Ensure the grooves on the air filter rim match protrusions on the air filter lid (4).
When installing the air filter lid (4) make sure to properly place ignition plug wire and access sleeves for carburettor
adjustment screws.
Do not wash the air filter in petrol or any other flammable solvent to avoid fire hazard or appearance of dangerous
vapours.
5.3. Cylinder fining.
Dust deposition on the cylinder fining may cause motor overheating. Check regularly and clean the cylinder fining when
carrying out maintenance of the air filter.
5.4. Guide bar and saw chain.
Check condition of the guide bar and chain every 5 hours of the saw operation.
Set the ignition switch (14) to off position.
Loosen and unscrew the guide bar fixing nuts (7).
Remove the casing (10) and disassemble guide bar (20) and chain (21).