Panterra Fusion - Cylinder and Piston Checking and Measurement

8. Cylinder and Piston
8-4
91
NIKOTA USA: PANTERRA SCOOTER SERVICE MANUAL
CHAPTER 8: CYLINDER AND PISTON
1
PISTON PIN
PISTON
SNAP
RING
PISTON
5
PISTON
RING GAP
Checking the piston, the piston pin and the
piston ring.
Attention:
Don’t damage or break the ring.
1. Clear off all of the carbon deposits
from the ring groove.
2. Mount the ring and measure the
clearance of the ring groove.
Maximum service allowance:
The top ring: Replace when it goes
beyond 0.09mm (.035 in.).
The second ring: Replace when it
goes beyond 0.09mm (.035 in.).
3. Remove the piston rings.
Install the piston rings into the bottom of
the cylinder.
Attention:
Use the piston head to press the
rings into place in the cylinder.
4. Measure the piston ring gap in bore.
Maximum service allowance:
Replace when it goes beyond
0.45mm (.018 in.).
5. Measure the ID of the piston pin hole.
Maximum service allowance:
Replace when it goes beyond
13.04mm (.51 in.).