Sym Jet Euro X servicemanual - Scootergrisen
Sym Jet Euro X servicemanual - Scootergrisen
Sym Jet Euro X servicemanual - Scootergrisen
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Piston Ring Inspection<br />
Measure the end gap of each piston ring.<br />
Service limit: 0.40 mm<br />
Caution<br />
With the piston, push each piston ring into<br />
cylinder correctly.<br />
Connecting Rod Inspection<br />
Install bearing and piston pin onto connecting<br />
rod small end, and then check its clearance.<br />
Measure the ID of connecting rod small end.<br />
Service limit: 17.025mm<br />
Piston/Cylinder Installation<br />
Install the expanding ring into the groove of 2 nd<br />
ring.<br />
Align the ring end with the lock pin in the ring<br />
groove.<br />
Install the top ring and the 2 nd ring onto the ring<br />
groove respective.<br />
Caution<br />
The top ring and the 2 nd ring can not be<br />
changeable each other.<br />
Push the rings into ring groove and then check<br />
rings’ mating condition.<br />
If ring could not be push in the ring groove, it<br />
means that ring groove is dirty or wrong ring<br />
groove installation.<br />
Caution<br />
All rings should be installed with the marks<br />
facing up.<br />
All ring should be replaced at same time,<br />
and it can not be replaced one ring only.<br />
It should use same brand name piston ring<br />
in an engine and can not mix with other<br />
one.<br />
This chapter Contents<br />
5. CYLINDER HEAD/CYLINDER/PISTON<br />
1T: top ring<br />
2T: 2 nd ring<br />
Clearance<br />
Top ring<br />
2 nd ring<br />
Piston ring mark<br />
Expanding ring<br />
5-7
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