Fuel Pump - Toro Groundsmaster 4500-D Service Manual

Fuel Pump

The fuel pump is attached to the frame near the fuel pre--
filter (Fig. 29).
IMPORTANT: When testing fuel pump, make sure
that pump is not operated without fuel.
Fuel Pump Capacity Test
1. Park machine on a level surface, lower cutting units,
stop engine, and engage parking brake.
2. Disconnect electrical connector from the engine run
solenoid to prevent the engine from firing.
3. Disconnect fuel pump discharge hose from the water
separator.
4. Make sure fuel hoses attached to the fuel pump are
free of obstructions.
5. Place disconnected pump discharge hose into a
large, graduated cylinder sufficient enough to collect 1
quart (0.95 liter).
6. Collect fuel in the graduated cylinder by turning igni-
tion switch ON. Allow pump to run for 30 seconds, then
release ignition switch to OFF.
7. The amount of fuel collected in the graduated cylin-
der should be approximately 11.75 fl oz (350 ml) after 30
seconds.
8. Replace fuel pump as necessary. Install fuel hose to
the water separator.
9. Reconnect electrical connector to the engine run so-
lenoid.
10.Bleed the fuel system (see Traction Unit Operator's
Manual).
Groundsmaster 4500--D/4700--D
3
1. Fuel pump
2. Fuel pre- -filter
Fuel Pump Specifications
Pump Capacity
Pressure
Max. Current
Draw
Rev. D
Page 5 - - 19
1
2
Figure 29
3. Pump discharge hose
23.5 fl oz/min (695 ml/min)
3.3 psi (22.8 kPa)
0.9 amp
Electrical System (Rev. A)