Yamaha FT50C Service Manual page 39

Item
2nd ring
Dimension B
Dimension T
End gap
Side clearance
Oil ring
Dimension B
Dimension T
End gap
Side clearance
Camshafts
Intake (A)
Exhaust (A)
Intake and
exhaust (B)
Camshaft journal diameter
#1
#2, #3, #4
Camshaft journal oil clearance
#1
#2, #3, #4
Maximum camshaft runout
Rocker arm shafts
Outside diameter
Rocker arms
Inside diameter
Valves
Valve clearance (cold)
Intake
Exhaust
Head diameter (A)
Intake
Exhaust
Face width (B)
Intake
Exhaust
Seat contact width (C)
Intake
Exhaust
62Y5A11
Maintenance specifications
Unit
FT50CEHD
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in) 30.89–30.99 (1.2161–1.2200)
mm (in) 30.82–30.92 (1.2135–1.2175)
mm (in) 25.95–26.05 (1.0217–1.0256)
mm (in) 36.93–36.94 (1.4539–1.4543)
mm (in) 36.94–36.95 (1.4543–1.4547)
mm (in) 0.055–0.100 (0.0022–0.0039)
mm (in) 0.045–0.090 (0.0018–0.0035)
mm (in)
mm (in) 15.98–15.99 (0.6291–0.6295)
mm (in) 16.00–16.01 (0.6299–0.6303)
0.20 ± 0.05 (0.008 ± 0.002)
mm (in)
0.30 ± 0.05 (0.012 ± 0.002)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
Model
FT50CED
1.47–1.49 (0.058–0.059)
2.49–2.51 (0.098–0.099)
0.30–0.50 (0.012–0.020)
0.03–0.07 (0.001–0.003)
2.34–2.46 (0.092–0.097)
2.75 (0.108)
0.20–0.70 (0.008–0.028)
0.05–0.19 (0.002–0.008)
0.04 (0.0016)
29.9–30.1 (1.177–1.185)
25.9–26.1 (1.020–1.027)
1.84–2.97 (0.072–0.117)
1.98–3.11 (0.078–0.122)
0.9–1.1 (0.035–0.043)
0.9–1.1 (0.035–0.043)
FT50CET
1
2
3
4
5
6
7
8
9
2-4