Priming The Fuel System; Bleeding Air From The Injectors; Electrical System Maintenance; Electrical System Safety - Toro Groundsmaster 4500-D Operator's Manual

5. Insert the fuel-pickup tube through the rubber bushing
and into the tank (Figure
Note: Ensure that the fuel-pickup tube is fully seated
into the rubber bushing.
6. Install the supply hose onto the fitting of the
fuel-pickup tube, and secure the hose with the hose
clamp that you removed in step 1.

Priming the Fuel System

Prime the fuel system before starting the engine for the
first time, after running out of fuel, or after fuel system
maintenance (e.g. draining the filter/water separator,
replacing a fuel hose). To prime the fuel system, make sure
that the fuel tank has fuel in it. Then, turn the ignition key to
the ON position for 10 to 15 seconds which allows the fuel
pump to prime the fuel system.
Important: Do not use the engine starter motor to crank
the engine in order to prime the fuel system.

Bleeding Air from the Injectors

Note: Use this procedure only if the fuel system has been
purged of air through normal priming procedures and the
engine does not start.
1. Loosen the tube nut for the cylinder #1 fuel-injector
at the injection pump
Figure 45
1. Tube nut (cylinder #1 fuel injector)
2. Move the throttle to the F
3. Turn the key in the ignition switch to the S
position and watch the fuel flow around the connector.
4. Turn the key to the O
solid flow.
5. Tighten the pipe connector securely.
6. Clean all residual fuel from the engine.
7. Repeat the procedure for the remaining fuel-injector
tubes.
44).
(Figure 45).
position.
AST
TART
position when you observe
FF
Electrical System
Maintenance

Electrical System Safety

•
Disconnect the battery before repairing the machine.
Disconnect the negative terminal first and the positive
last. Connect the positive terminal first and the negative
last.
•
Battery acid is poisonous and can cause burns. Avoid
contact with your skin, eyes, and clothing. Protect your
face, eyes, and clothing when working with a battery.
•
Battery gases can explode. Keep cigarettes, sparks, and
flames away from the battery.
•
Charge the batteries in an open, well-ventilated area,
away from sparks and flames. Unplug the charger before
connecting or disconnecting the battery. Wear protective
clothing and use insulated tools.
•
Do not use a pressure washer near any electronic
components.
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harm.
Wash hands after handling.
46
WARNING