4-68
Engine Servicing
(1) TAPER
(2) WOODRUFF KEY
(1) WASHER
(2) FLYWHEEL NUT
(1) FLYWHEEL HOLDER (2) FLYWHEEL NUT
Hold the flywheel with a flywheel holder and tighten
the flywheel nut to the specified torque.
Tool:
Flywheel holder
07725-0040001
Torque: 69 N•m (7.0 kgf•m, 51 lbf•ft)
Install the left crankcase cover (page 4-66).
(1) COUNTERSHAFT COLLAR
Crankcase Separation/Disassembly
Remove the engine from the frame.
Remove the following:
– cylinder head, cylinder, piston
– clutch
– gearshift linkage/transmission
– flywheel and stator
– primary drive gear/balancer drive gear
– crankcase breather hose
Remove the countershaft collar and O-ring.
Installation
Clean any oil off from the crankshaft taper.
Install the woodruff key onto the crankshaft groove.
Install the flywheel onto the crankshaft.
Apply oil to the flywheel nut threads and seating
surface.
Install the washer and flywheel nut.
(1)
(2)
(1)
(2)
(1)
(1)
(2)
Summary of Contents for NSF250R 2012
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