Yamaha F50F Service Manual page 29

Item
2nd piston ring
Dimension B
Dimension T
End gap
Side clearance
Oil ring
Dimension B
(*1)
Dimension T
End gap
Side clearance
Camshaft
Intake (A)
Exhaust (A)
Intake and
exhaust (B)
Camshaft journal diameter
#1
Camshaft journal diameter
#2, #3, #4
Camshaft journal oil clearance
Camshaft runout limit
Rocker arm shaft
Rocker arm shaft outside
diameter
Rocker arms
Rocker arm inside diameter
Valves
Valve clearance (cold)
Intake
Exhaust
Head diameter (A)
Intake
Exhaust
Face width (B)
Intake
Exhaust
Seat contact width (C)
Intake and exhaust
Margin thickness (D)
Intake
Exhaust
(*1)
The figures are for reference only.
6C13G11
Unit
F50FED
mm (in) 1.47–1.49 (0.0579–0.0587)
mm (in) 2.60–2.80 (0.1024–0.1102)
mm (in) 0.30–0.50 (0.0118–0.0197)
mm (in) 0.02–0.06 (0.0008–0.0024)
mm (in) 2.36–2.48 (0.0929–0.0976)
mm (in)
mm (in) 0.20–0.70 (0.0079–0.0276)
mm (in) 0.04–0.18 (0.0016–0.0071)
mm (in) 30.888–30.988 (1.2161–1.2200)
mm (in) 30.824–30.924 (1.2135–1.2175)
mm (in) 25.950–26.050 (1.0216–1.0256)
mm (in) 36.925–36.945 (1.4537–1.4545)
mm (in) 36.935–36.955 (1.4541–1.4549)
mm (in) 0.045–0.090 (0.0018–0.0035)
mm (in)
mm (in) 15.971–15.991 (0.6288–0.6296)
mm (in) 16.000–16.018 (0.6299–0.6306)
0.20 ± 0.05 (0.008 ± 0.002)
mm (in)
0.30 ± 0.05 (0.012 ± 0.002)
mm (in)
mm (in) 31.90–32.10 (1.256–1.264)
mm (in) 26.60–26.80 (1.047–1.055)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
Maintenance specification
Model
F50FEHT F50FET
2.75 (0.1083)
0.03 (0.0012)
1.98–2.40 (0.078–0.094)
2.16–2.79 (0.085–0.110)
1.3–1.5 (0.051–0.059)
0.8–1.2 (0.031–0.047)
1.0–1.4 (0.039–0.055)
FT50GET
1
2
3
4
5
6
7
8
9
2-6