0.5 mm
0.5 mm
Put the piston ring horizontally on the cylinder
bottom to measure the opening clearance.
Piston ring
Service limit
1st
2nd
●
PISTON RING ASSEMBLY
Clean the piston ring slot completely and
assemble the piston ring.
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●
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NOTE:
Apply engine oil on all piston rings.
Avoid damaging the piston and piston ring during
assembly.
Align the mark on the piston ring upward during
assembly, pay attention to distinguish the marks
of the top ring and the second ring.
Keep the opening of each ring cross at 120 , do
not leave the oil ring opening on the same line.
The piston ring must be able to rotate freely in
the ring slot after installation.
°
PISTON ASSEMBLY
Remove the residues of sealing material on the
contact surface between the crankcase and the
cylinder case.
●
Top ring
Second ring
Oil ring
Line ring
E N G I N E
3 - 2 4
OIL
Engine oil
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