4-43
Engine Servicing
(1) CYLINDER
Cylinder, Piston
Cylinder Removal
Remove the cylinder head (page 4-30).
Remove the cam chain tensioner lifter and gasket
(page 4-27).
Remove the cylinder.
(1) GASKET
(2) DOWEL PINS
Remove the gasket and dowel pins.
(1)
(2)
(1)
(1) PISTON PIN CLIP
(2) PISTON PIN
(3) PISTON
Piston Removal
Place a clean shop towel over the crankcase to pre-
vent the clip from falling into the crankcase.
Remove the piston pin clips with pliers.
Press the piston pin out of the piston and remove
the piston.
• The piston pin clip fitting area has plating process-
ing.
• Do not use tool which may damage a piston ring
groove or piston pin clip.
• Replace the piston with a new one, whenever the
piston pin clip is removed.
Be careful not to damage the plating while removing
the piston pin clip.
(2)
(1)
(3)
Summary of Contents for NSF250R 2012
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