9
Troubleshooting
Problems
Causes
Solutions
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 hose(s) may be blocked,
or the valve(s) are closed, faulty and/or blocked
Check to see that the hoses and valves are in good working order
The end of the suction hose is not submerged
The end of the suction hose must be submerged
Total head is too high for this pump to work against
Reduce total head or use a higher head pump
Pump will not prime
Excessive suction lift (*1)
Move the pump closer to liquid source
Priming takes a long time
Suction hose is quite long
Refer to PUMP PLACEMENT section
Air pockets or leaks in the suction hose
Check the hose for loose connections
Pump does not perform as well as
it should
Flow is restricted due to:
a) Debris build-up
b) Faulty or semi-open valve(s)
c) Pipe or hose used is smaller than the thread sizes on the pump
a) Clean the hoses and fittings
b) Check to see that the valves are in good working order
c) Increase the size of hose or pipe to reduce friction losses
Insufficient submergence of the end of suction hose
The end of the suction hose 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 the hose for loose connections
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 hose
The end of the suction hose must be submerged
Pump will not start
No fuel
Add fuel per engine manufacturer’s instructions
Faulty spark plug
Replace spark plug
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 START position
Pump starts, but runs roughly
Choke is in the wrong position
Slide choke lever to the RUN position
Spark plug wire is loose
Attach wire to spark plug securely
Faulty spark plug
Replace spark plug
Fuel is contaminated (water, debris, etc.)
Allow engine to cool for 2 minutes, then drain fuel tank and carburetor
Fill tank with fresh fuel
Low oil level
Add oil per engine manufacturer’s instructions
Pump shuts down during operation
No fuel
Add fuel per engine manufacturer’s instructions
Low oil level
Add oil per engine manufacturer’s instructions
*1.
Excessive suction lift must take into consideration:
a. Excessive suction lift must take into consideration:
b. Pipe Fitting
c. Elevation above sea level
Including all the above, we recommend that the total suction head not exceed 25 ft.
*2. An excessively worn impeller is mainly caused from cavitation, which is caused by several situations, such as:
a. Restricted suction
b. Excessive suction lift
*3. The seal may be damaged due to:
a. Normal Wear
b. Overheating
c. Pumping chemicals or abrasives that this seal is not designed for.
For technical assistance for pump operation, call 1.888.885.9254. For assistance with engine components, please refer to the engine manual or contact an LCT® engine authorized service depot for
further assistance. For more information visit www.lctusa.com/service/
LCT® is a registered trademark of Liquid Combustion Technology, LLC.
