Removing The Crankshaft Assembly; Checking The Crankshaft - Yamaha XT660R S Service Manual

1
D
C
A
2
C
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CRANKSHAFT
EAS00388
REMOVING THE CRANKSHAFT
ASSEMBLY
1. Remove:
• crankshaft 1
NOTE:
_
• Remove the crankshaft with the crankcase
separating tool 2.
• Make sure the crankcase separating tool is
centered over the crankshaft.
Crankcase separating tool
90890-01135
EAS00394

CHECKING THE CRANKSHAFT

1. Measure:
• big end side clearance D
Out of specification → Replace the big end
bearing, crankshaft pin, or connecting rod.
Big end side clearance
0.350 ~ 0.650 mm
(0.0138 ~ 0.0256 in)
2. Measure:
• crankshaft width A
Out of specification → Replace the crank-
shaft.
Crankshaft width
74.95 ~ 75.00 mm
(2.9508 ~ 2.9528 in)
3. Measure:
• crankshaft runout C
Out of specification → Replace the crank-
shaft, bearing or both.
NOTE:
_
Turn the crankshaft slowly.
Maximum crankshaft runout
0.04 mm (0.0016 in)
ENG