8. Cylinder and Piston
8-6
93
NIKOTA USA: PANTERRA SCOOTER SERVICE MANUAL
CHAPTER 8: CYLINDER AND PISTON
3. Check the distortion of the
cylinder.
Maximum service allowance:
Repair or replace when it goes
beyond 0.05mm (.002 in.).
4. Measure the ID of the small end
of the connecting rod.
Maximum service allowance:
Replace when it goes beyond
13.06mm (.51 in.).
Attention:
Don’t scratch the piston or
break the piston ring.
When replacing the ring,
keep the surface with a
markup.
After assembling, make sure
that the ring can be turned
freely in the ring groove.
5. Lightly coat the rings with engine
oil before installing them on the
piston.
6. Make sure to keep ring end gaps
rotated at 120
˚
increments.
7. Cover piston and rings with a
light coat of engine oil.
2
4
6
120˚
120˚
120˚
20mm
(.79 in.)
20mm
(.79 in.)
TOP RING
2ND RING
SIDE RING
EXPANDING RING
SIDE RING
TOP RING
SECOND RING
OIL RING
CONNECTING
ROD
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