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CRANKCASE/CRANKSHAFT
• This section covers the crankcase separation to service the crankshaft.
• The following parts must
be
removed before separating the crankcase.
- Centerstand (page 2-28)
- Engine (page 16-4)
- Cylinder head (page 10-13)
- Cylinder (page 11-5)
- Piston (page 11-7)
- Drive pulley (page 12-9)
- Clutch/driven pulley (page 12-12)
- Flywheel/starter (page 14-4)
- Stator base (page 8-5)
- Oil pump driven gear (page 8-5)
•
In
addition to the parts listed above, remove the following parts when the left crankcase must be replaced.
- Final reduction (page 13-6)
•
In
addition to the parts listed above, remove the following parts when the right crankcase must be replaced.
- Oil pump (page 8-5) .
•
Be
careful not to damage the crankcase mating surfaces when separating and assembling the crankcase halves.
• Clean all disassembled parts with clean solvent and dry them using compressed air before inspection.
• When installing the crankshaft, be sure to use the special tools; position the special tools
on
the bearing inner race and pull the
crankshaft into the bearing until it
is
fully seated.
SPECIFICATIONS
Unit:
mm
(in)
ITEM
STANDARD
SERVICE LIMIT
Crankshaft
Connecting rod side clearance
0.10 - 0.35 (0.004 - 0.014) 0.55 (0.022)
Connecting rod radial clearance
0.004 - 0.016 (00002 - 0.0006) 0.05 (0.002)
Runout
-
0.10 (0.004)
1
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