Yamaha F115A - Page 44

2-4
SPEC
E
MAINTENANCE SPECIFICATIONS
Oil ring
Dimension B mm (in) 2.38 - 2.48 (0.094 - 0.098)
Dimension T mm (in) 2.40 (0.094)
End gap mm (in) 0.20 - 0.70 (0.008 - 0.028)
Side clearance mm (in) 0.03 - 0.15 (0.001 - 0.006)
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) 7.30 (0.287)
Exhaust mm (in) 6.98 (0.275)
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 91, 120, 160
Exhaust Degree 90, 140
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) 1.98 - 2.40 (0.080 - 0.094)
Exhaust mm (in) 2.26 - 2.69 (0.099 - 0.106)
Seat width (C)
Intake mm (in) 1.58 - 1.94 (0.062 - 0.076)
Exhaust mm (in) 1.80 - 2.02 (0.071 - 0.080)
Margin thickness (D)
Intake mm (in) 0.8 - 1.2 (0.031 - 0.047)
Exhaust mm (in) 1.0 - 1.4 (0.039 - 0.055)
Stem diameter
Intake mm (in) 5.975 - 5.990 (0.2352 - 0.2358)
Exhaust mm (in) 5.960 - 5.975 (0.2346 - 0.2352)
Item Unit
Model
Worldwide F115AET FL115AET
USA F115TR LF115TR
Canada F115TR LF115TR
B
T
A
B
A
B
C
D