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1. Filter adapter (primary fuel
filter)
8. Place a small-drain container under the secondary fuel
filter.
9. Loosen and remove the secondary fuel filter
75).
Note: If necessary, use a filter wrench to loosen the
fuel filter.
Note: Ensure that the O-ring does not stick to the
fuel filter head. Remove the O-ring with an O-ring
pick, if necessary.
1. Secondary fuel filter
Installing the Primary- and Secondary-Fuel Filters
Important: Do not pre-fill the pressure-side fuel filter
with fuel unless you use a clean side block-off plug.
Pre-filling the pressure-side fuel filter without the use of
Figure 74
2. Primary-fuel filter
(fuel/water separator)
Figure 75
2. Filter adapter (secondary
fuel filter)
a side block-off plug can allow debris to enter the fuel
system and damage fuel system components.
Important: If possible, pre-fill new primary- and
secondary-fuel filters with clean fuel prior to assembly
using the clean side block-off plug packed with the filter.
Do not pour fuel directly into the center of the filter,
because this will allow unfiltered fuel to enter the system
and may damage the fuel system components.
Note: You must prime the system after you install the fuel
filters.
1. Wipe clean the sealing surfaces of the filter adapters
for the primary- and secondary-fuel filters
and
Figure
2. Lubricate the seals for the fuel filters with clean engine
oil.
3. Install the primary-fuel filter onto the filter adapter,
and tighten the filter until the gasket contacts the filter
head surface
4. Tighten the fuel filter an additional 3/4 turn after
contact.
Important: Do not overtighten the fuel filter.
5. Connect the wiring harness to the water-in-fuel sensor.
(Figure
6. Install the secondary-fuel filter onto the filter adapter,
and tighten the filter until the gasket contacts the filter
head surface
7. Tighten the fuel filter an additional 3/4 turn after
contact.
Important: Do not overtighten the fuel filter.
8. Bleed the air from the fuel system by priming the
system; refer to
Priming the Fuel System
WARNING
The fuel system is under high pressure. Bleeding
the system without proper precautions and training
could result in injury to you from injected fluid or
fire or explosion.
• Do not loosen any fittings while the engine is
running.
• Read the engine owner's manual for the proper
bleeding procedure or contact your Authorized
Toro Service Dealer.
Prime the fuel system to remove air from the system after the
following events:
•
The engine has run until the fuel tank is empty.
•
The fuel filters are replaced.
•
Parts of the fuel system are removed for repair.
1. Ensure that there is fuel in the fuel tank.
52
75).
(Figure
74).
(Figure
75).
Priming the Fuel System (page
(Figure 74
52).
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