8.
EASY TROUBLESHOOTING
1. PUMP DOES NOT RUN
Stucking of impeller
(Disassemble and clean.)
2. PUMPING VOLUME IS LOW
Air suction at suction side.
(Check piping at suction side.)
Engine output drop-off.
(Consult your nearest dealer.)
Breakage of mechanical seal
(Consult your nearest dealer.)
Too high suction lift (Lower the height.)
Suction hose is too long or too thin.
(Use a thick hose with a minimum
length.)
Leakage of water from the water
passage. (Stop the leaking.)
Clogging of foreign substances on the
impeller.
(Disassemble and clean.)
Wear out of the impeller.
Strainer is clogged. (Clean it.)
Engine speed is too low.
(Consult your nearest dealer.)
3. PUMP DOES NOT
SELFPRIME.
Air suction at suction side.
(Check piping at suction side.)
Insufficient amount of priming water
inside the pump casing
(Prime sufficiently.)
Loose tightening of the drain plugs.
(Tighten the plugs firmly.)
Engine speed is too low.
(Consult your nearest dealer.)
Air suction from mechanical seal.
(Consult your nearest dealer.)
4. WHEN ENGINE DOES NOT
START:
Perform the following checkup before you
take the pump to your FHG dealer.
If you still have trouble after completing
the checkup, take the pump to your
nearest FHG dealer.
Are foreign substances contained in
the fuel?
Drain all the fuel from the fuel tank and
check that no foreign substances and/or
water are contained in the fuel.
Clean the fuel filter.
Is there enough compression?
If the compression is not sufficient, check
the mounting of the injection nozzle.
If the mounting nuts are loose, tighten
them.
