Yamaha F25 - Fuel System Technical Data

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Fuel system technical data
Fuel system
Item Unit
Model
F25MHA
F25EHA
Fuel joint
Holding pressure
Positive pressure
kPa
(kgf/cm
2
,
psi)
50.0 (0.50, 7.3)
Fuel filter assembly
Holding pressure
Positive pressure
kPa
(kgf/cm
2
,
psi)
200.0 (2.00, 29.0)
Fuel pump
Holding pressure
Inlet positive pressure
kPa
(kgf/cm
2
,
psi)
50.0 (0.50, 7.3)
Inlet negative pressure
kPa
(kgf/cm
2
,
psi)
30.0 (0.30, 4.4)
Outlet positive pressure
kPa
(kgf/cm
2
,
psi)
50.0 (0.50, 7.3)
Carburetor
Float height
mm (in) 14.0 ± 2.0 (0.55 ± 0.08)
Valve seat size
mm (in) 1.2 (0.05)
Main jet (MJ)
#108
Main air jet (MAJ)
#70
Main nozzle (MN)
mm (in) 2.6 (0.10)
Pilot jet (PJ)
#45
Pilot air jet (PAJ)
#85
Starter jet (SJ)
#62
Prime Start plunger length
mm (in) 10.7 (0.42)
Item Unit
Model
F25EA
F25A T25A
Fuel joint
Holding pressure
Positive pressure
kPa
(kgf/cm
2
,
psi)
50.0 (0.50, 7.3)
Fuel filter assembly
Holding pressure
Positive pressure
kPa
(kgf/cm
2
,
psi)
200.0 (2.00, 29.0)
Electrical technical data / Fuel system technical data