Operation Manual
27
CS-310
Oil lter
Fuel lter
Oil tank cap
Fuel tank cap
0.65 mm (0.026 in.)
AIR FILTER
•  Check before every use.
•  Release the cylinder cover latches, and remove 
the cylinder cover and air lter.
•  Brush off dust lightly, or clean with compressed 
air, or replace the air lter.
•  Reinstall air lter and the cylinder cover, engage 
latches.
CHECK FUEL SYSTEM
•  Check before every use.
•  After refueling, make sure fuel does not leak 
from around fuel pipe, fuel grommet or fuel tank 
cap.
•  In case of fuel leakage there is a danger of re. 
Stop using the machine immediately and re-
quest your dealer to inspect or replace.
SPARK PLUG
•  Check periodically.
•  The standard spark gap is 0.65 mm   
(0.026 in.).
•  Correct the spark gap if it is wider or   
narrower than the standard gap.
•  Fastening torque:  150 to 170 Kgf • cm   
   (130 to 145 in • lbf).
FUEL FILTER
•  Check periodically. 
•  Do not allow dust to enter fuel tank. 
•  A clogged lter will cause difculty in starting 
engine or abnormalities in engine performance.
•  Pull the fuel lter out through fuel inlet port with 
a piece of steel wire or the like. 
•  When the lter is dirty, replace it.
•  When the inside of the fuel tank is dirty, rinsing 
the tank out with gasoline can clean it.
OIL FILTER
•  Check periodically.
•  Do not allow dust to enter into oil tank.
•  A clogged oil lter will affect the normal lubricat-
ing system. 
•  Pull it out through oil lling hole with a piece of 
steel wire or the like. 
•  If the lter is dirty, wash it in gasoline or replace 
it. 
•  When the inside of the tank gets dirty, rinsing the 
tank out with gasoline can clean it.
Cylinder cover latch
Air lter
Cylinder cover 
Cylinder cover latch










