Yamaha F100A - Maintenance Specifications; Engine

2-3
SPEC
E
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
Item Unit
Model
F100
CYLINDER HEAD
Warpage limit mm (in) 0.1 (0.004)
Camshaft journal inside
diameter
mm (in) 25.000 ~ 25.021 (0.984 ~ 0.985)
Valve lifter hole inside diameter mm (in) 28.000 ~ 28.021 (1.102 ~ 1.103)
CYLINDERS
Bore
Standard mm (in) 79.000 ~ 79.020 (3.110 ~ 3.111)
Taper limit mm (in) 0.08 (0.003)
Out-of-round limit mm (in) 0.08 (0.003)
CAMSHAFTS
Intake (A) mm (in) 37.22 ~ 37.38 (1.465 ~ 1.472)
Exhaust (A) mm (in) 36.90 ~ 37.06 (1.453 ~ 1.459)
Intake and exhaust (B) mm (in) 29.92 ~ 30.08 (1.178 ~ 1.184)
Valve lift
Intake mm (in) 6.94 (0.273)
Exhaust mm (in) 6.58 (0.259)
Camshaft journal diameter mm (in) 24.96 ~ 24.98 (0.9827 ~ 0.9835)
Camshaft journal oil clearance mm (in) 0.020 ~ 0.061 (0.0008 ~ 0.0024)
Maximum camshaft runout mm (in) 0.1 (0.004)
VALVES
Face angle
Intake Degree 120, 91, 110
Exhaust Degree 140, 91, 110
Valve clearance (cold)
Intake mm (in) 0.20 ± 0.03 (0.008 ± 0.001)
Exhaust mm (in) 0.34 ± 0.03 (0.013 ± 0.001)
Head diameter (A)
Intake mm (in) 29.00 ~ 29.20 (1.142 ~ 1.150)
Exhaust mm (in) 24.00 ~ 24.20 (0.945 ~ 0.953)
Face width (B)
Intake mm (in) 2.00 ~ 2.43 (0.079 ~ 0.096)
Exhaust mm (in) 2.28 ~ 2.71 (0.090 ~ 0.107)
Seat width (C)
Intake and exhaust mm (in) 1.2 ~ 1.6 (0.047 ~ 0.063)
Margin thickness (D)
Intake mm (in) 0.45 ~ 0.65 (0.018 ~ 0.026)
Exhaust mm (in) 0.65 ~ 0.85 (0.026 ~ 0.033)
A
B
A
B
C
D