4-45
Engine Servicing
(1) CONNECTING ROD
Connecting Rod
Check the connecting rod small end for wear or
damage.
(1) TOP RING (2) SIDE RAILS
(3) SPACER (4) MARKING
• Do not damage the piston ring by spreading the
ends too far.
• Be careful not to damage the piston during piston
ring installation.
• Install the top ring with its marking facing up and
with its gap facing intake side.
• Install the upper side rail with its gap facing
exhaust side and the lower side rail facing intake
side.
• Install the expander gap facing the piston pin
direction and being careful not to overlap the gap.
• For easy piston installation, apply grease to the
expander gap after the oil ring is installed.
After installation, the rings should rotate freely in
the ring grooves.
Piston Ring Installation
Clean the piston ring grooves thoroughly.
Apply engine oil to the piston rings and piston ring
grooves.
Install the piston ring into the grooves with their
marking facing up.
(1)
(2)
(3)
IN
EX
(4)
(1)
Summary of Contents for NSF250R 2012
Page 1: ......
Page 2: ......
Page 3: ......
Page 10: ...Memo ...
Page 18: ...Memo ...
Page 39: ...2 21 Service Data REAR BRAKE HOSE REAR BRAKE RESERVOIR HOSE ...
Page 40: ...Memo ...
Page 150: ...Memo ...
Page 192: ...Memo ...
Page 297: ......
Page 298: ......
Page 299: ......
Page 300: ......