Operating Guide

34
100742 - 2 IN. (5 CM) SEMI-TRASH PUMP
TROUBLESHOOTING
TROUBLESHOOTING
Problem Cause Solution
Pump will not start.
No fuel.
Allow engine to cool for 2 minutes, then fill fuel
tank.
Low oil.
Fill or check oil is to the proper level; place water
pump on a flat, level surface.
Faulty spark plug or cable
Replace spark plug or check spark plug cable is
seated properly.
Fuel valve lever is in the OFF position. Turn the fuel valve lever to the ON position.
Ignition switch is in the OFF position. Turn the ignition switch to the ON position.
Choke is in the wrong position. Slide choke lever to the CHOKE position.
Pump will not pump.
Air leak in suction hose.
Make sure suction hose is double clamped at
joints, clamps are tight, fittings have thread
compound and are tight, with no nicks or cuts in
hose.
The suction and/or discharge line(s) may
be blocked.
Check to see that the hoses and filter are in good
working order.
The end of the suction line is not
submerged.
Increase its length, or move pump closer to
source of liquid.
Total head is too high for this pump to
work against
Reduce total head or use a higher head pump.
Pump will not prime.
Allow more time
It may take up to 6 minutes to prime water up to
the pump, depending on suction lift height.
Hose clamps on inlet hose are not tight.
Even small pinhole leak can result in vacuum
loss preventing pump from priming. Check hose
clamps to ensure they are tight. Adjust clamp
position if necessary."
Excessive suction lift (*1). Move the pump closer to liquid source.
Excessive head lift.
Relocate pump so suction head is less than
discharge head.
Water not added through the top prime
cap.
Review “Priming the Pump” section.
Priming takes a long time.
Suction line is quite long. Move pump closer to source.
Air pockets or leaks in the suction line.
Check the line for loose connections. Make sure
suction hose is submerged.
Pump does not perform as well as it
should.
Flow is restricted due to debris build-up. Clean the hoses, fittings and filter.
Insufficient submergence of the end of
suction hose.
The end of the suction line must be submerged.
Excessively worn impeller (*2). Replace impeller.
Seal is damaged (*3). Liquid will be
leaking through the middle of the adapter.
Replace the seal.
Air pockets or leaks in the suction hose. Check suction hose.
Clogged impeller. Remove casing to clean out.
Engine throttle is in SLOW position. Move throttle to FAST position.
Pump loses prime.
Water level drops below the end of the
suction line.
Increase length of suction line or move the pump
closer to the water source.