2 - 8
SPEC
MAINTENANCE SPECIFICATIONS
2nd ring
Type
Taper
----
Dimensions (B
×
T)
1.2
×
4.0 mm
(0.0472
×
0.1575 in)
----
End gap (installed)
0.30 ~ 0.45 mm
(0.0118 ~ 0.0177 in)
0.80 mm
(0.0315 in)
Side clearance
0.03 ~ 0.07 mm
(0.0012 ~ 0.0028 in)
0.13 mm
(0.0051 in)
Oil ring
Dimensions (B
×
T)
2.5
×
3.4 mm
(0.0984
×
0.1339 in)
----
End gap (installed)
0.2 ~ 0.7 mm
(0.0079 ~ 0.0276 in)
----
Side clearance
0.06 ~ 0.15 mm
(0.0024 ~ 0.0059 in)
----
Crankshaft:
Crank width “A”
74.95 ~ 75.00 mm
(2.9508 ~ 2.9528 in)
----
Runout limit
C1
----
0.03 mm
(0.0012 in)
C2
----
0.03 mm
(0.0012 in)
Big end side clearance “D”
0.35 ~ 0.65 mm
(0.0138 ~ 0.0256 in)
1.0 mm
(0.0394 in)
Big end radial clearance “E”
0.010 ~ 0.025 mm
(0.0004 ~ 0.0010 in)
----
Balancer:
Balancer drive method
Gear
----
Automatic centrifugal clutch:
Clutch shoe thickness
1.5 mm (0.06 in)
1.0 mm
(0.04 in)
Clutch-in revolution
1,900 ~ 2,300 r/min
----
Clutch-stall revolution
3,350 ~ 3,850 r/min
----
Item
Standard
Limit
B
T
B
T
E
A
D
C1
C2
Summary of Contents for YFM660FS
Page 1: ...LIT 11616 17 14 5KM 28197 E2 YFM660FS SUPPLEMENTARY SERVICE MANUAL ...
Page 17: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...
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Page 72: ...YFM660FP SERVICEMANUAL LIT 11616 15 01 5KM 28197 E0 ...
Page 117: ...2 11 SPEC MAINTENANCE SPECIFICATIONS Item Standard Cylinder head tightening sequence ...
Page 417: ...9 3 ELEC CHECKING THE SWITCH ...
Page 478: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...