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TROUBLESHOOTING GUIDE ( CONTINUED )
Symptom
Motor runs but does
pump (continued)
Low flowrate
Possible Cause(s)
7. System air leak
8. System air lock
9. Poor connections
or low voltage
10. Fuel level low
11. Motor running
backwards due to
incorrect polarity
1. Strainer partially
clogged
2. Poor connections
or low voltage
3. Suction pipe clogged
or damaged
4. Fuel tank empty
5. Using off-the-shelf
automatic nozzle
6. System air leak
7. Bypass poppet spring
weak
EN
Corrective Action
7. Tighten all pump fittings and
connections. Inspect suction
pipe for leaks or damage
8. Occurs if external filter,
meters or an off-the-shelf
automatic nozzle is used.
To correct, remove the pipe
plug in the top outlet port and
fill the gear cavity with fuel.
Use of a factory-supplied
automatic nozzle
is recommended
9. Make sure electrical
connections are secure.
Check battery voltage
10. Fill tank
11. Connect red wire to positive
(+) ungrounded side of
battery. Gear with key should
turn counterclockwise
1. Remove the strainer
coverplate. Remove and
clean the strainer. Install
again
2. Make sure electrical
connections are secure.
Also check battery voltage
3. Remove pump from tank.
Inspect suction pipe. Clean
or replace, as necessary
4. Fill tank
5. Factory-supplied automatic
nozzle is recommended
6. Tighten all pump fittings and
connections. Inspect suction
pipe for leaks or damage.
Replace, as necessary
7. Remove the bypass poppet
and inspect spring (see
Maintenance / Repair section.
Replace, if necessary
5
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