HUSTLER 3700 Operator's Manual page 35

NOTE: It is a good practice to fill the fuel tank at the end
of each day, as this will reduce overnight condensation.
Figure 4-10
Fuel filter
IMPORTANT: Any maintenance operation that requires
the removal of safety covers must be performed by a trained
service technician.
Draining the fuel filter:
NOTE: The fuel filter should be drained after every 100
hours of operation.
1. Make sure there is adequate fuel in the fuel tank and
close the fuel shutoff valve (the handle should be
pointing to the "C" position.) Remove the fuel
sediment bowl. Figure 4-12
2. Open the fuel shutoff valve until all water has been
removed and only fuel flows from the filter base.
3. Install the fuel sediment bowel. The fuel system is
auto bleeding And does not require any manual
bleeding procedures.
Changing the fuel filter:
NOTE: Change the diesel fuel filter every 200 operating
hour.
1. Close the shutoff valve (the handle should be pointing
to the "C" position). Figure 4-12
2. Remove the sediment bowl by rotating the retaining
nut Ref. No. 1. Figure 4-12
3. Open the fuel shutoff valve Ref. No. 2, to drain any
remaining water from the tank. Figure 4-12
4. Discard the fuel element Ref. No. 3, and install a new
element. Figure 4-12
5. Inspect the O rings Ref. No. 4 & 5 and replace if
necessary. Figure 4-12
6. Install and securely tighten the sediment bowl.
7. Open the fuel shutoff valve (the handle should be
pointing to the "O" position), so fuel will flow to the
filter. Figure 4-12
8. Bleed the fuel filter and injection pump as described
below in Bleeding the Fuel System.
109627CE_0512
Shown in Open position
Fuel cap
Bleeding the fuel system
IMPORTANT: Any maintenance operation that requires
the removal of safety covers must be performed by a trained
service technician.
The 3700 fuel system is designed to bleed automatically.
1. When the fuel tank is empty
Fill until the fuel level of the tank is at least half full,
then wait about one minute for air to dissipate.
2. When the fuel filter has been replaced:
After replacing the filter, open the fuel shutoff valve.
Air will dissipate for about one minute
NOTE: Fuel tank fuel level must be half full or more for
auto bleed system to function correctly.
NOTE: The 3700 is an auto bleeding system. No manual
bleeding procedures needed.
4-7
Open
Shut-off
valve
O
Figure 4-11
Figure 4-12
C Closed
Sediment
bowl
REV F