DAELIM BESBI SC125 - Service Manual - Piston / Piston Ring
10-3
CYLINDER / PISTON
WARPAGE INSPECTION
Check the cylinder for warpage by placing a straight
edge and feeler gauge across the stud holes. Replace
the cylinder if the service limit is exceeded.
SERVICE LIMIT : 0.05 mm
NOTE
Any clearance between the cylinder and head due to
damage or warpage will result in compression leaks
and reduced performance.
PISTON / PISTON RING
REMOVAL
NOTE
Place a clean shop towel over the crankcase to
prevent the possibility of the clip falling into the
crankcase.
Remove the piston pin clip using a pair of pliers.
Press the piston pin out of the piston.
NOTE
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.
INSPECTION
Clean carbon deposits from the piston.
Inspect the piston rings for movement by pressing the
rings. The rings should be able to move in its groove
without catching.
Spread each piston ring and remove it by lifting it up at
a point just opposite the gap.
CAUTION
Do not damage the piston ring by spreading the ends
too far.
Measure the clearance between the piston ring and
piston grooves.
SERVICE LIMIT : TOP : 0.105 mm
SECOND : 0.095 mm
Inspect the piston for wear or damage.