Yamaha F50F - Lower Unit

6C13G11
2-8
1
2
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4
5
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7
8
9
Lower unit
Oil pump
Type Trochoid
Outer rotor-to-housing
clearance
mm (in) 0.09–0.15 (0.0035–0.0059)
Outer rotor-to-inner rotor
clearance limit
mm (in) 0.12 (0.0047)
Rotor-to-cover clearance mm (in) 0.03–0.08 (0.0012–0.0031)
Relief valve operating
pressure
kPa
(kgf/cm
2
, psi)
350–450 (3.5–4.5, 50.8–62.3)
Thermostat
Opening temperature °C (°F) 58–62 (136–144)
Fully open temperature °C (°F) 70 (158)
Valve open lower limit mm (in) 3.0 (0.12)
Item Unit
Model
F50FED F50FEHT F50FET FT50GET
Gear backlash
Pinion-to-forward gear mm (in) 0.35–0.81 (0.0138–0.0319) 0.09–0.62
(0.0035–
0.0244)
Pinion-to-reverse gear mm (in) 0.89–1.34 (0.0350–0.0528) —
Pinion shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50
Forward gear shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50
Reverse gear shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40,
0.50
—
Item Unit
Model
F50FED F50FEHT F50FET FT50GET
Maintenance specification