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Alternative fuel pumps for 61A SST w/Kawaski 29DFI engine

#1

B

Bill32

These things seem to cost about $500 for Scag dealers. I am not sure of the SCAG or Kawasaki Part number as it is not shown on the diagrams or parts lists, they just say see engine manufacturer. I can't image there is more than one type plump used on the Kawasaki FD791 D fuel injected engines, but I can't find the pump number. Help. Also, is there some alternative pump or conversion kit or something to use instead? I have seen posts about people using an Airtex E8228 pump, but I don't know what the specs are for the OEM pump on my mower (fllow volume and PSI output). Anyone have any suggestions?
Thanks,
Bill Haas


#2

StarTech

StarTech

You need a regulated fuel pressure of 177 ± 5 kPa (1.8 ± 0.05 kg/cm2, 25.6 ± 0.7 psi) for that FD791D-AS03 engine.

Discharge flow rate 120 mL or more/3 seconds at high idle speed (3600rpm)

Kawasaki Fuel Pump PN 49040-2079
Fuel pressure regulator PN 16162-2053


#3

B

Bill32

Star Tech: Why did I need the pressure regulator? There is not one on my Turf Tiger now and I am pretty sure the pump on it is original.


#4

StarTech

StarTech

I using the FD791D-AS03 IPL and it is there and yes there should be one in your system.

FD791D-AS03 4 Stroke Engine FD791D FUEL-TANK/FUEL-VALVE​

fd791d-as03 Fuel pump.JPG


#5

B

Bill32

I assume the #16162 in above picture is the pressure regulator. Well, it is not there on my Turf Tiger, and don't see where it should be located. I can clearly trace the fuel line from the tank, to the in-line shut-off valve, to fuel filter, to pump, and from pump to inlet at throttle body on top of engine. I also note that when the fuel pump was working properly, it did not seem like it had all that much pressure. I could disconnect the fuel line at the throttle body immediately after shutdown and it seemed like the remaining pressure was just a few Lbs. Also, with fuel line disconnected and key on, fuel flow was low volume and you could stop it with little finger pressure.


#6

StarTech

StarTech

Find the fuel return line and trace it.
Scag 29 DFI.JPG


#7

T

txmowman

Bill32 said:
I assume the #16162 in above picture is the pressure regulator. Well, it is not there on my Turf Tiger, and don't see where it should be located. I can clearly trace the fuel line from the tank, to the in-line shut-off valve, to fuel filter, to pump, and from pump to inlet at throttle body on top of engine. I also note that when the fuel pump was working properly, it did not seem like it had all that much pressure. I could disconnect the fuel line at the throttle body immediately after shutdown and it seemed like the remaining pressure was just a few Lbs. Also, with fuel line disconnected and key on, fuel flow was low volume and you could stop it with little finger pressure.
Click to expand...
All FD791D's have a regulator. What spec is yours?


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