Bleeding The Fuel System; Bleeding Air From The Fuel Injectors - Toro T4240 Operator's Manual

4. Install the new filter canister by hand until the
gasket contacts mounting surface, then rotate it
an additional 1/2 turn.

Bleeding the Fuel System

You must bleed the fuel system before starting the
engine after any of the following situations:
•
Initial start up of a new machine
•
Engine has ceased running due to lack of fuel
•
Maintenance has been performed upon fuel
system components (i.e., replaced filter, serviced
separator, etc.)
DANGER
Under certain conditions, diesel fuel and fuel
vapors are highly flammable and explosive. A
fire or explosion from fuel can burn you and
others and can cause property damage.
• Use a funnel and fill the fuel tank outdoors,
in an open area, when the engine is off and
is cold. Wipe up any fuel that spills.
• Do not fill the fuel tank completely full. Add
fuel to the fuel tank until the level is 6 to 13
mm (1/4 to 1/2 inches) below the bottom
of the filler neck. This empty space in the
tank allows the fuel to expand.
• Never smoke when handling fuel, and stay
away from an open flame or where fuel
fumes may be ignited by a spark.
• Store fuel in a clean, safety-approved
container and keep the cap in place.
1. Park the machine on a level surface and ensure
that the fuel tank is at least half full.
2. Open the hood.
3. Turn the key in the ignition switch to the O
position and crank the engine.
Note:
The mechanical pump will suck fuel out
of the tank, fill the fuel filter and fuel hose and
force the air into the engine. This could take
some time to fully purge all the air out of the
system and the engine might fire erratically until
all air is purged out. When all air is purged and
the engine is running smoothly, it should be run
for a few minutes to ensure that it is fully purged.
Bleeding Air from the Fuel
Injectors
Note:
Only use this procedure if the fuel system has
been purged of air through normal priming procedures
and the engine will not start; refer to
System (page
1. Loosen the pipe connection to the No. 1 nozzle
and holder assembly
1. Fuel injectors
2. Move throttle to the F
3. Turn the key in the key switch to the S
position and watch the fuel flow around the
connector.
Note:
The engine will crank.
4. When you observe a solid flow of fuel, turn the
key to the O
5. Tighten the pipe connector securely.
6. Repeat steps
nozzles.
N
36
Bleeding the Fuel
36).
(Figure 40).
Figure 40
position.
AST
position.
FF
1 through 5 on the remaining
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