Maintenance Specifications; Power Unit - Yamaha F4 Service Manual

SPEC

MAINTENANCE SPECIFICATIONS

POWER UNIT

Item
CYLINDER HEAD
Warpage limit
CYLINDER
Bore
Wear limit
Taper limit
Out of round limit
CAMSHAFT
Intake (A)
Exhaust (A)
Intake (B)
Exhaust (B)
Camshaft diameter(journal)
Camshaft round limit
VALVE LIFTER
Outside diameter
PUSH ROD
Runout limit
VALVES
Valve clearance (cold)
Intake
Exhaust
Head diameter (A)
Intake
Exhaust
Face width (B)
Intake
Exhaust
Seat width (C)
Intake
Exhaust
Margin thickness (D)
Intake
Exhaust
MAINTENANCE SPECIFICATIONS
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
59.00~59.02 (2.323~2.324)
0.08 (0.003)
0.05 (0.002)
26.736~26.836 (1.0526~1.0565)
26.532~26.623 (1.0442~1.0481)
21.950~22.050 (0.8642~0.8681)
21.950~22.050 (0.8642~0.8681)
14.934~14.984 (0.5880~0.5899)
0.03 (0.001)
7.965~7.980 (0.3136~0.3142)
0.10 ± 0.02 (0.004 ± 0.0008)
0.10 ± 0.02 (0.004 ± 0.0008)
23.9~24.1 (0.94~0.95)
21.9~22.1 (0.86~0.87)
1.84~2.26 (0.072~0.089)
1.84~2.26 (0.072~0.089)
0.6~0.8 (0.02~0.03)
0.6~0.8 (0.02~0.03)
0.70 (0.028)
1.00 (0.039)
2-3
Model
F4A/F4
0.1 (0.004)
59.1 (2.33)
0.5 (0.02)
E