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22 Owner’s Manual for Portable Generator
Troubleshooting
PROBLEM CAUSE CORRECTION
Engine is running, but
AC output is not
available.
1. Circuit breaker OPEN.
2. Poor connection or defective
cord set.
3. Connected device is bad.
4. Fault in generator.
5. GFCI receptacle is OPEN (if
equipped).
1. Reset circuit breaker.
2. Check and repair.
3. Connect another device that is
in good condition.
4. Contact IASD.
5. Correct ground fault and press
reset button on GFCI recepta -
cle (if equipped).
Engine runs well at
no-load, but bogs when
load is applied.
1. Short circuit in a connected
load.
2. Generator is overloaded.
3. Engine speed is too slow.
4. Shorted generator circuit.
5. Clogged spark arrestor.
1. Disconnect shorted electrical
load.
2. See Know Generator Limits .
3. Contact IASD.
4. Contact IASD.
5. Clean spark arrestor screen.
Engine will not start; or
starts and runs rough.
1. Fuel shut-off is OFF.
2. Dirty air filter.
3. Out of fuel.
4. Stale fuel.
5. Spark plug wire not con -
nected to spark plug.
6. Bad spark plug.
7. Water in fuel.
8. Overchoking.
9. Low oil level.
10. Excessive rich fuel mixture.
11. Intake valve stuck open or
closed.
12. Engine lost compression.
13. Engine switch is OFF (electric
start models only).
1. Turn fuel shut-off ON.
2. Clean or replace air filter.
3. Fill fuel tank.
4. Drain fuel tank and fill with
fresh fuel.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Drain fuel tank; fill with fresh
fuel.
8. Set choke to no choke posi -
tion.
9. Fill crankcase to correct level.
10. Contact IASD.
11. Contact IASD.
12. Contact IASD.
13. Turn engine switch ON (elec -
tric start models only).
Engine shuts down
during operation.
1. Out of fuel.
2. Low oil level.
3. Fault in engine.
4. COsense (if equipped) shut-off
due to accumulating carbon
monoxide if a red light blinks
on the side panel badge.
5. COsense (if equipped) shut-off
due to a system fault if a yel -
low light blinks on the side
panel badge.
1. Fill fuel tank.
2. Fill crankcase to correct level.
3. Contact IASD.
4. Follow all safety instructions
and relocate generator to an
open area outside, far away
from windows, doors and
vents.
5. Start to confirm yellow light
blinks when/if generator shuts-
off. If COsense continues to
fault and shut-off, contact
IASD.
Engine lacks power. 1. Load is too high.
2. Dirty air filter.
3. Engine needs to be serviced.
4. Clogged spark arrestor.
1. Reduce load (see
Know Gen -
erator Limits
).
2. Clean or replace air filter.
3. Contact IASD.
4. Clean spark arrestor screen.
Engine surges or
stumbles.
1. Choke is opened too soon.
2. Carburetor is running too rich
or too lean.
1. Set choke to halfway position
until engine runs smoothly.
2. Contact IASD.