Yamaha F100B, Service Manual, Page: 39 / 345

60C5D11
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2nd ring
Dimension B mm (in) 1.47–1.49 (0.0579–0.0586)
Dimension T mm (in) 3.00–3.20 (0.1182–0.1259)
End gap mm (in) 0.70–0.90 (0.0276–0.0354)
Side clearance mm (in) 0.03–0.07 (0.0012–0.0027)
Oil ring
Dimension B mm (in) 2.38–2.48 (0.0938–0.0976)
Dimension T mm (in) 2.40 (0.0945)
End gap mm (in) 0.20–0.70 (0.0079–0.0275)
Side clearance mm (in) 0.03–0.15 (0.0012–0.0059)
Camshafts
Intake (A) mm (in) 37.22–37.38 (1.4654–1.4716)
Exhaust (A) mm (in) 36.90–37.06 (1.4528–1.4590)
Intake and
exhaust (B) mm (in) 29.92–30.08 (1.1780–1.1842)
Camshaft journal diameter mm (in) 24.96–24.98 (0.9827–0.9834)
Camshaft journal oil clearance mm (in) 0.02–0.06 (0.0008–0.0023)
Maximum camshaft runout mm (in) 0.1 (0.004)
Valves
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) 29.0–29.2 (1.142–1.150)
Exhaust mm (in) 24.0–24.2 (0.945–0.953)
Face width (B)
Intake mm (in) 2.00–2.43 (0.0787–0.0957)
Exhaust mm (in) 2.28–2.71 (0.0898–0.1067)
Seat contact width (C)
Intake mm (in) 1.2–1.6 (0.047–0.063)
Exhaust mm (in) 1.2–1.6 (0.047–0.063)
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) 5.97–5.99 (0.2350–0.2358)
Exhaust mm (in) 5.96–5.97 (0.2347–0.2350)
Guide inside diameter
Intake and exhaust mm (in) 6.01–6.02 (0.2367–0.2370)
Stem-to-guide clearance
Intake mm (in) 0.02–0.05 (0.0008–0.0019)
Exhaust mm (in) 0.04–0.06 (0.0016–0.0023)
Stem runout limit mm (in) 0.01 (0.0004)
Item Unit
Model
F100BET F100CET
Maintenance specifications