Yamaha YFM4FAR Service Manual page 32

2nd ring
Type
Dimensions (B × T)
End gap (installed)
Side clearance
Oil ring
Dimensions (B × T)
End gap (installed)
Crankshaft:
C1
Crank width "A"
Runout limit C1
C2
Big end side clearance "B"
Big end radial clearance "E"
Balancer:
Balancer drive method
Automatic centrifugal clutch:
Clutch shoe thickness
Clutch-in revolution
Clutch-stall revolution
MAINTENANCE SPECIFICATIONS
Item
T
B
T
E
C2
B
A
Standard
B
Taper
1.2 × 3.6 mm
(0.04724 × 0.1417 in)
0.40 ~ 0.60 mm
(0.0157 ~ 0.0236 in)
0.03 ~ 0.07 mm
(0.0012 ~ 0.0028 in)
2.8 × 2.8 mm
(0.1102 × 0.1102 in)
0.2 ~ 0.7 mm
(0.0079 ~ 0.0276 in)
62.95 ~ 63.00 mm
(2.4783 ~ 2.4803 in)
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0.25 ~ 0.75 mm
(0.0098 ~ 0.0295 in)
0.010 ~ 0.025 mm
(0.0004 ~ 0.0010 in)
Gear
1.5 mm (0.06 in)
1,960 ~ 2,240 r/min
3,300 ~ 3,900 r/min
2 - 8
SPEC
Limit
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0.95 mm
(0.0374 in)
0.13 mm
(0.0051 in)
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0.03 mm
(0.0012 in)
0.03 mm
(0.0012 in)
1.00 mm
(0.0394 in)
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1.0 mm
(0.04 in)
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