Yamaha FT8DMH Service Manual

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MAINTENANCE SPECIFICATIONS
LOWER UNIT
Item Unit
Model
World wide F6AMH F8CMH
USA, Canada F6MH F8MH
OIL PUMP
Discharge (@ 3,000 r/min) L/h (US gal/h,
Imp gal/h)
Abobe 3.5 (0.925, 0.77)
Outer rotor-housing
clearance
a
mm (in) 0.10 - 0.15 (0.004 - 0.006)
Outer rotor-inner rotor
clearance
b
mm (in) 0.04 - 0.14 (0.002 - 0.006)
Rotor-housing clearance
c
mm (in) 0.03 - 0.09 (0.001 - 0.004)
CARBURETOR
Stamped mark
68R-00 (F6AMH/F6MH)
68R-20 (F6AMH for SAV)
69F-20 (F6BMH)
68T-00 (F8CMH/F8MH)
68T-20 (F8CMH for SAV)
68T-30 (F8CW)
Main jet # 74 74
Pilot jet # 39 39
Float height
a
mm (in) 19.0 - 20.0
(0.75 - 0.79)
19.0 - 20.0
(0.75 - 0.79)
Idle speed r/min 1,050 ± 50 1,050 ± 50
Item Unit
Model
World wide F6AMH F8CMH
USA, Canada F6MH F8MH
GEAR BACKLASH
Pinion - Forward gear mm (in) 0.88 - 1.26 (0.0346 - 0.0496)
Pinion - Reverse gear mm (in) 1.01 - 1.38 (0.0398 - 0.0543)
Pinion shim thickness mm 1.9, 2.0, 2.1, 2.2
Forward gear shim thickness mm 0.10, 0.12, 0.15, 0.18, 0.30
Reverse gear shim thickness mm 0.1

Yamaha FT8DMH Specifications

General

Brand	Yamaha
Model	FT8DMH
Category	Outboard Motor
Language	English