Troubleshooting - Generac Power Systems 0068210 Owner's Manual

Troubleshooting

PROBLEM
Engine will 1. Engine ON/OFF switch in OFF
not start, or
starts and 2. Dirty air filter
runs rough. 3. Out of fuel.
4. Stale fuel.
5. Fuel switch in OFF position (if
6. Low oil level (units with low oil
7. Spark plug wire not connected to
8. Bad spark plug.
9. Choke position incorrect.
10. Water in fuel.
11. Excessively rich fuel mixture.
12. 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
flow. 2. Reduced engine power output.
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.**
10. Engine throttle in SLOW position
Pump does 1. Air leakage (intake) at suction side.
not prime
water, or 2. Insufficient priming water inside
priming takes
a long time. 3. Water drain plug is loose.
4. Engine malfunction.
5. Damaged mechanical seal.
6. Incorrectly sized suction hose.
7. Suction hose is too long.
8. Excessive suction lift. ***
Pump loses 1. Water level drops below the end of
prime.
Owner's Manual for Water Pump
CAUSE
position.
equipped).
shutdown system).
plug.
blocked.
diameter too small.
connection.
pump casing.
the suction line.
Maintenance and Troubleshooting
CORRECTION
1. Place Engine ON/OFF switch in ON
position.
2. Clean or replace air filter.
3. Fill fuel tank.
4. Replace with fresh fuel.
5. Place fuel switch in ON position.
6. Fill oil to proper level.
7. Connect wire to spark plug.
8. Replace spark plug.
9. Adjust choke position.
10. Drain fuel tank; replace with fresh
fuel.
11. Contact Independent Authorized
Service Dealer.
12. 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 Independent Authorized
Service 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.
10. Increase throttle position.
1. Check suction hose and connections
for leaks. Tighten or repair.
2. Add priming water.
3. Tighten water drain plug.
4. Contact Independent Authorized
Service Dealer.
5. Replace mechanical seal.
6. Use correct suction hose.
7. Move pump closer to water.
8.
1. Increase length of suction line or
move the pump closer to the water
source.
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