Bleeding Air From The Injectors - Toro 30856 Operator's Manual

Figure 39
1. Fuel injection pump bleed screw
4. Turn the key in the ignition switch to the On
position. The electric fuel pump will begin operation,
thereby forcing air out around the air bleed screw.
Leave the key in the On position for 15 seconds. Air
and fuel will be internally drained back to fuel tank.
Tighten the screw and turn the key to Off.
Note: Normally the engine should start after the
above bleeding procedures are followed. However,
if the engine does not start, air may be trapped
between the injection pump and injectors; refer to

Bleeding Air from the Injectors.

Bleeding Air from the Injectors
Note: This procedure should be used only if the
fuel system has been purged of air through normal
priming procedures and the engine will not start; refer
to Bleeding the Fuel System.
1. Loosen the pipe connection to the No. 1 injector
nozzle and holder assembly at the injection pump
(Figure 40).
Figure 40
1. No. 1 injector nozzle
2. Move the throttle to the Fast position.
3. Turn the key in the ignition switch to the Start
position and watch the fuel flow around the
connector. Turn the key to the Off position when
solid flow is observed.
4. Tighten the pipe connector securely.
5. Repeat the procedure on the remaining nozzles.
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