Groundsmaster 4500 --D/4700--D Page 5 -- 47 Electrical System
Fuel Pump (Models 30881 a nd 30882)
The fuel pump is attached to the air cleaner mount below
the fuel water separator (Fig. 58).
Operational Test
1. Park machine on a level surface, lower cutting
decks, stop engine and apply parking brake. Raise hood
to access fuel pump.
2. Disconnect fuel pump discharge hose from the fuel
filter attached to the engine (Fig. 58).
3. Make sure fuel hoses attached to the fuel pump are
free of obstructions.
4. Place disconnected end of pump discharge hose
into a large, graduated cylinder sufficient enough to col-
lect 1 quart (0.95 liter).
IMPORTANT: When testing fuel pump output, do
not turn ignition switch to the START position.
5. Collect fuel in the graduated cylinder by t urning igni-
tion switch to the ON position. Allow pump to run for
thirty (30) seconds, then turn switch to OFF.
6. The amount of fuel collected in the graduated cylin-
der should be approximately 11.8 fl oz (350 ml) after
thirty (30) seconds.
7. Replace fuel pump as necessary.
IMPORTANT: If fuel pump is replaced, make sure
that replacement pump is the correct pump for your
Groundsmaster by using your Parts Catalog. If in-
correct pump is used, fuel system components can
be damaged.
8. Install fuel pump discharge hose to the fuel filter fit-
ting on the engine and secure with hose clamp.
9. Prime fuel system (see Fuel System in the Service
and Repairs section of Chapter 3 -- Yanmar Diesel En-
gine).
10.Lower and secure hood.
Figure 58
1
FRONT
1. Fuel pump
2. Pump discharge hose
3. Hose clamp
4. Fuel water separator
5. Engine
2
3
4
5
Fuel Pump Specifications
Pump Capacity
23.5 fl oz/min (700 ml/min)
Pressure 3.3 PSI (22.8 kPa)
Current Draw 0.9 amp
Electrical
System
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