DAELIM a.four Service Manual page 84

CYLINDER HEAD/CYLINDER/PISTON
PISTON PIN CLIP
8-4
BEARING
PISTON
PISTON PIN
CYLINDER HEAD
CYLINDER
REMOVE
● Piston.
● Piston ring.
● Expander.
● Needle bearing from the small end of the connecting
rod.
·Do not damage or scratch the piston.
·Do not apply side force to the connecting rod.
·Do not let the clip fall into the crankcase.
·Mark and store the pistons and piston pins so that
they can be reinstalled in their original positions.
INSPECTION
● There is more carbon deposit whitin the engine in case
of 2 cycle engine than 4 cycle engine because the
engine oil is burnt in the 2 cycle engine. Excessive
carbon deposit may cause self-ignition by the
overheating of the carbon in the combustion chamber
and the piston head and may damage the engine.
● Carbon deposit in the exhaust gas port disturbs exhaust
gas flow and causes decrease of the output. Remove
the carbon deposit periodically.
·Pay attention not to damage the combustion
chamber, the piston and the cylinder when removing
the carbon.
● Remove the cylinder head and remove the carbon with
the piston being in the top dead center.
● Dismount the cylinder, remove the carbon deposited in
the exhaust gas port and clean the remaining carbon in
the cylinder.