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CRANKCASE AND CRANKSHAFT
4 - 43
INSPECTION
EC4N4201
Crankshaft
1. Measure:
Runout limit a
Connecting rod big end side clearance
b
Connecting rod big end radial clear-
ance c
Crank width d
Out of specification → Replace.
Use the dial gauge and a thickness
gauge.
Standard
Runout
limit
Side
0.1 ~ 0.4 mm
(0.0039 ~ 0.0157 in)
clearance
Radial
0.010 ~ 0.025 mm
(0.0004 ~ 0.0010 in)
clearance
Crack
42.95 ~ 43.00 mm
(1.691 ~ 1.693 in)
width
Crankcase
1. Apply:
Sealant
On the crankcase (left).
Quick gasket
ACC-QUICK-GS-KT
Yamaha bond No. 1215:
90890-85505
NOTE:
Clean the contacting surface of crankcase
(left and right) before applying the sealant.
DO NOT ALLOW any sealant to come in
contact with the oil gallery a.
ENG
Limit
0.03 mm
—
(0.0012 in)
—
0.05 mm
(0.002 in)
—
®
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