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TROUBLESHOOTING ( CONTINUED )
Symptom
Low flow rate
Motor stalls when
operating in bypass
mode
EN
Possible Cause(s)
1. Strainer partially clogged
2. Poor connections
or low voltage
3. Fuel tank empty
4. Suction pipe clogged
or damaged
5. System air leak
6. Using off-the-shelf
automatic nozzle
1. Motor protector activated
2. Wiring defective
3. Bypass poppet binding
or damaged
4. Motor damaged
Corrective Action
1. Remove the strainer
coverplate. Remove
and clean the strainer.
Install again
2. Make sure electrical
connections are secure.
Also check battery voltage
3. Fill tank
4. Remove pump from tank.
Inspect suction pipe. Clean
or replace, as necessary
5. Tighten all pump fittings and
connections. Inspect suction
pipe for leaks or damage.
Replace, as necessary
6. Factory-supplied automatic
nozzle is recommended
1. Turn off switch. Allow motor
to cool, then turn on switch
2. Use Wiring instructions in the
Installation Section to ensure
proper connections
3. Using instructions in the
Repair Section, remove the
bypass poppet, spring and
O-ring. Clean cavity. Inspect
components and replace,
as necessary
4. Replace pump
5
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