Yamaha F40B - Lower Unit

67C3K11 2-18
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Lower unit
Pilot jet (P.J.)
(For Europe) — #40 — #40
(For Oceania) #40 #38
Pilot screw (P.S.) turns out 1 7/8 ± 1/2 2 ± 1/2
Engine idle speed r/min 850 ± 50
Fuel pump
Fuel pump holding pressure
Fuel inlet positive pressure kPa
(kgf/cm
2
, psi)
50 (0.5, 7.3)
Fuel inlet negative pressure kPa
(kgf/cm
2
, psi)
30 (0.3, 4.4)
Fuel outlet positive pressure kPa
(kgf/cm
2
, psi)
50 (0.5, 7.3)
Fuel joint holding pressure
Positive pressure kPa
(kgf/cm
2
, psi)
50 (0.5, 7.3)
Fuel filter assembly holding
pressure
Positive pressure kPa
(kgf/cm
2
, psi)
1,035 (10.35, 150.1)
Item Unit
Model
F30AEHT F30AET F40BWHT F40BET
Lower unit
Holding pressure kPa
(kgf/cm
2
, psi)
100 (1.0, 14.5)
Gear backlash
Pinion-to-forward gear
(*1)
mm (in) 0.18–0.57 (0.0071–0.0224)
Pinion-to-reverse gear
(*1)
mm (in) 0.75–1.13 (0.0295–0.0445)
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
Propeller shaft
Runout limit mm (in) 0.02 (0.0008)
Drive shaft
Runout limit mm (in) 0.5 (0.0197)
(*1)
Figures obtained using the special service tools.
Item Unit
Model
F30AEHT F30AET F40BWHT F40BET
Maintenance specification