Yamaha FT50C Service Manual page 40

SPEC
Item
Margin thickness (D)
Intake
Exhaust
Stem diameter
Intake
Exhaust
Guide inside diameter
Intake and exhaust
Stem-to-guide clearance
Intake
Exhaust
Stem runout limit
Valve springs
Free length
Minimum free length
Tilt limit
Connecting rods
Small-end inside diameter
Big-end inside diameter
Crank pin oil clearance
Crankshaft
Crankshaft journal
Diameter
Crankshaft pin
Diameter
Runout limit
Crankcase
Crankcase main journal inside
diameter
Crankshaft main journal oil
clearance
Oil pump
Type
Outer rotor-to-housing
clearance
Outer rotor-to-inner rotor
clearance limit
Rotor-to-cover clearance
Thermostats
Opening temperature
Fully open temperature
Valve open lower limit
2-5
Specifications
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
°C (°F)
°C (°F)
mm (in)
Model
FT50CEHD FT50CED
0.6–1.0 (0.024–0.039)
0.7–1.1 (0.028–0.043)
5.48–5.49 (0.2157–0.2161)
5.46–5.47 (0.2150–0.2153)
5.50–5.51 (0.2165–0.2169)
0.01–0.03 (0.0004–0.0012)
0.03–0.05 (0.0012–0.0020)
0.03 (0.0012)
39.85 (1.569)
37.85 (1.490)
1.7 (0.07)
15.985–15.998 (0.6293–0.6298)
36.000–36.024 (1.4173–1.4183)
0.016–0.040 (0.0006–0.0015)
42.984–43.000 (1.6923–1.6929)
32.984–33.000 (1.2986–1.2992)
0.04 (0.0016)
46.000–46.024 (1.8110–1.8120)
0.012–0.036 (0.0005–0.0014)
Trochoid
0.09–0.15 (0.001–0.006)
0.01–0.10 (0.0004–0.0039)
0.03–0.08 (0.001–0.003)
60 (140)
70 (158)
3.0 (0.12)
FT50CET
62Y5A11