CHAPTER 3A ENGINE 260/ 300 / 400 cc ATV SERVICE MANUAL09.0
CHAPTER 3 ENGINE PAGE. 3A- 39
zSide rails (oil ring) e
zExpander spacer (oil ring) f
NOTE:
zMake sure to install the piston rings so that the
manufacturer’s m arks or numbers are located
on the upper side of the rings.
zLubricate the pistons and piston rings liberally
with engine oil.
2.Install:
zPiston c
zPiston pin d
zPiston pin clip e NEW
NOTE:
zApply engine oil to the piston pins.
zThe " → " mark ○
a
on the piston must face
the exhaust side of the cylinder.
zBefore installing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the piston pin clip from falling into the
crankcase.
zMake sure to install each piston in its
respective cylinder.
3. Install:
zGasket (cylinder) NEW
zDowel pins
4. Position:
zPiston rings
NOTE:
Offset the piston ring end gaps as shown.
○
a
Top ring end
○
b
Oil ring end (lower)
○
c
Oil ring end (upper)
○
d
2nd ring end
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