operators_manual

Table Of Contents
3. Tighten the fuel filter cap by rotating it
clockwise until the filter cap O-ring
makes contact with the fuel module.
Then tighten the filter cap to 30 lb-ft
(40 N·m) as specified on the filter
cap.
4. If installing a new fuel filter on a
PX-7, loosen the fuel priming pump
knob by rotating it counter-clockwise.
NOTE
The PX-9 uses an electric pri-
ming pump. If installing a new
fuel filter on a PX-9 engine first
vent the fuel system at the quick-
disconnect fitting at the pressure
side filter head inlet. The vent
overflow may be routed back to
the fuel tank, or, into a vented
container. Cycle the ignition
switch to the ON position every 2
minutes (to power the electric lift
pump) until fuel appears in the
chassis-mounted fuel filter hous-
ing and a solid stream of fuel
flows out of the vent., then skip
to Step 6.
5. Operate the priming pump by moving
the knob in and out for 150 seconds.
During this time the pumping
resistance will increase but the full
time is required to fully prime the fuel
system. Then tighten the knob by
rotating it clockwise.
CAUTION
Operate priming pump at a maxi-
mum rate of 30 strokes per mi-
nute to prevent damage to pump.
6. Check for leakage at the fuel filter
cap. Tighten if necessary.
WARNING
Check the fuel filter for signs of
leakage. DO NOT smoke or al-
low an open flame in close prox-
imity. Failure to do so could ignite
a fire or cause an explosion
which could result in serious in-
jury to you and/or bystanders.
Failure to comply may result in
death, personal injury, equipment
or property damage.
7. Start the engine and allow it to idle
for several minutes. Note that it could
take up to 15 seconds of cranking for
the engine to start. If the starter is
engaged for longer than 20 seconds
without starting, additional priming
pump actuation may be necessary.
CAUTION
If the engine is cranked exces-
sively Starter Protection will be
triggered and starter engage-
ment will be restricted for 10 mi-
nutes.
8. Check the system for leakage while
idling. Then turn the engine off and
check the system again for leakage.
Starting After the Fuel Tank Has
Run Dry or After Fuel System
Service has been Performed
Procedure for starting the engine after
running out of fuel.
Follow the steps below to restart the
engine:
ENGINE MAINTENANCE - Maintenance Procedures
64 Y53-1183-1E1 (04/16/18)
2