Troubleshooting - Generac Power Systems PowerMate 1020 Owner's Manual

Troubleshooting

PROBLEM
Engine will 1. Dirty air filter
not start, or 2. Out of fuel.
starts and 3. Stale fuel.
runs rough. 4. Spark plug wire not connected to
5. Bad spark plug.
6. Water in fuel.
7. Excessively rich fuel mixture.
8. Impeller obstructed.
Pump not 1. Air leak in suction hose.
operating. 2. Suction and/or discharge hoses
3. End of suction hose not submerged.
4. Total head exceeds pump capacity.
Weak 1. Air leakage (intake) at suction side
discharge 2. Reduced engine power output.
flow. 3. Damaged mechanical seal.
4. Suction lift too high.
5. Suction hose too long, or hose
6. Leaking discharge hose or
7. Damaged mechanical seal.*
8. Impeller obstructed.
9. Worn impeller.**
Pump does 1. Air leakage (intake) at suction side.
not prime 2. Insufficient priming water inside
water, or
priming takes 3. Water drain plug is loose.
a long time. 4. Engine malfunction.
5. Damaged mechanical seal.
6. Incorrectly sized suction hose.
7. Suction hose is too long.
8. Excessive suction lift. ***
Oil leakage Engine failure.
at muffler or
air cleaner.
Water Damaged mechanical seal.
leakage
between
engine and
pump.
* Mechanical seal damage may be caused by normal wear, overheating, or pumping
incompatible fluids.
** Excessive impeller wear is primarily due to cavitation. Causes include restricted suction and
excessive suction lift.
*** Total suction head should not exceed 26 ft (8 m).
14
CAUSE
plug.
blocked.
diameter too small.
connection.
pump casing.
CORRECTION
1. Clean or replace air filter.
2. Fill fuel tank.
3. Replace with fresh fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain fuel tank; replace with fresh
fuel.
7. Contact authorized servicing dealer.
8. Clean impeller.
1. Check suction hose and
connections for leaks. Tighten or
repair.
2. Check hoses and strainer. Clear
obstructions.
3. Increase suction hose length or
move pump closer to water.
4. Reduce total head or choose a
different pump for the task.
1. Check suction hose and
connections for leaks. Tighten or
repair.
2. Contact authorized servicing dealer.
3. Replace mechanical seal.
4. Lower suction lift.
5. Shorten suction hose, or increase
hose diameter.
6. Check discharge hose and
connection for leaks. Tighten or
repair.
7. Replace mechanical seal.
8. Clean impeller.
9. Replace impeller.
1. Check suction hose and
connections for leaks. Tighten or
repair.
2. Add priming water.
3. Tighten water drain plug.
4. Contact authorized servicing dealer.
5. Replace mechanical seal.
6. Use correct suction hose.
7. Move pump closer to water.
Repair or replace.
Replace mechanical seal.
Owner's Manual for Water Pump