28
www.raider.bg
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 (16) and its surroundings, so the dirt does not get into carburettor
chamber after the lid is removed.
Unscrew knob for air filter lid (17) and remove air filter lid (16).
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 (16).
When installing the air filter lid (16) 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 (3) to off position.
Loosen and unscrew the guide bar fixing nuts (7).
Remove the casing (6) and disassemble guide bar (10) and chain (11).
Clean oil holes and groove in the guide bar (10).
Lubricate tip chain wheel of the guide bar through the hole located on the guide bar tip.
Check condition of the chain (11).
5.5. Chain sharpening.
Pay attention to cutting tools. Cutting tools should be sharp and clean, it allows efficient and
safe operation. Operating the saw with blunt chain causes quick wear of the chain, guide bar
and driving chain wheel, and breaking the chain in the worst case. That is why it is important
to sharpen the chain on time.
Chain sharpening is a complex operation. Sharpening the chain by yourself requires use
of special tools and skills. It is recommended to entrust sharpening the chain to qualified
persons.
5.6. Fuel filter.
Unscrew the fuel filler plug (13).
Use wire hook to remove the fuel filter through the fuel filler hole.
Disassemble the fuel filter and wash it in petrol or replace with a new one.