Bleeding The Fuel System - Toro Groundsmaster 300 Series Service Manual

Fuel System Service
When cleaning the engine, DO NOT spray water onto a
hot injection pump. This could cause the fuel pump to
seize and be damaged.
When working on the fuel system, ALWAYS make sure
that the equipment and work area is clean. The close
Bleeding the Fuel System (Fig. 35, 36)
1. Stop the engine and engage the parking brake.
Unlatch and raise hood.
2. Loosen the air bleed screw on the fuel filter / water
separator.
3. Turn the ignition key switch to the ON position. The
electric fuel pump will begin to operate and force fuel
out around the screw loosened in step 2. Fuel will fill the
filter bowl and then flow out around the screw. When a
solid stream of fuel flows out around the screw, tighten
the screw and turn the key switch OFF.
4. Open the air bleed screw on the fuel injection pump.
5. Turn the ignition key switch to the ON position. The
electric fuel pump will begin to operate and force fuel
out around the injection pump air vent screw. When a
solid stream of fuel flows out around the screw, tighten
the screw and turn the key switch OFF.
NOTE: Normally the engine should start after this pro-
cedure. If the engine does not start, air may be trapped
between the injection pump and injectors (See Bleeding
Air From the Injectors in this section of the book.)
Fuel System Service
tolerance parts of the fuel system can be easily dam-
aged by dirt.
Wash fuel system parts in clean fresh diesel fuel. If parts
are removed for a period of time, store them in contain-
ers of clean diesel fuel to prevent corrosion.
1. Fuel filter/water separator
1. Fuel injection pump
Page 4 - 34
Figure 35
2. Air bleed screw
Figure 36
2. Air bleed screw
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Groundsmaster 300 Series