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Troubleshooting Chart
General
Symptom
Possible Cause(s)
Engine will not
1. Engine switch is set to "OFF".
start
2. Fuel valve is turned to "CLOSE".
3. Choke is open.
4. Engine is out of gas.
5. Engine is filled with contaminated or
old gas
6. Spark plug is dirty.
7. Spark plug is broken.
8. Unit is not on level surface.
9. Oil is low.
Engine runs
1. Circuit reset button or GFCI breaker is
but there is no
off.
electrical output
2. Bad connecting of wires / cables.
3. Bad electrical device connected to unit.
Unit runs but
1. Unit is overloaded
does not support
all electrical
devices
2. Short in one of the connected devices.
connected
3. Air cleaner is dirty.
Generator
Symptom
Possible Cause(s)
No output
1. Engine speed is too slow
voltage
2. Open, shorted, or incorrect wiring
3. Faulty capacitor
4. Open or shorted field windings
5. Open diodes
6. Front panel switch set incorrectly
7. Circuit breaker tripped
Low output
1. Engine speed is too slow
voltage with
2. Open diodes
no load
3. Faulty capacitor
4. Open or shorted field windings
5. Range setting on front panel incorrect
High output
1. Faulty capacitor
voltage with
2. Engine speed is too fast
no load
3. Range setting on front panel incorrect
Low output
1. Open diode
voltage under
2. Engine speed too slow at full load
load
3. Excessive load applied
4. Range setting on front panel incorrect
Erratic output
1. Unbalanced engine
voltage
2. Dirty, corroded, or loose wiring
connection
3. Unstable load applied
Noisy operation
1. Loose unit or engine bolt (s)
2. Short circuit in unit field or load
3. Faulty bearing
H These diagnostic and repair procedures should be performed by an authorized service center.
20
Corrective Action
1. Set engine switch to "ON".
2. Turn fuel valve to "OPEN" position.
3. Close the choke.
4. Add gas.
5. Change the gas in the engine.
6. Clean spark plug.
7. Replace spark plug.
8. Move unit to a level surface to prevent low oil shutdown from triggering.
9. Add or replace oil.
1. Wait for 2 minutes and push the circuit reset button to the "ON" position
and flip the GFCI breaker to the "ON" position.
2. If you are using an extension cord, use only heavy-duty extension
cords that are specifically designed for outdoor use. Make sure the
wattage rating for each cord exceeds the total wattage of all appliances
connected to the unit.
3. Try connecting a different device.
1. Turn off all electrical devices. Unplug all electrical devices. Turn off unit.
Wait several minutes. Restart unit. Try connecting fewer electrical loads to
the unit.
2. Try disconnecting any faulty or short-circuited electrical loads.
3. Clean or replace air filter.
Corrective Action
1. Adjust engine speed H
2. Referring to the wiring diagram, clean and reconnect all wiring H
3. Replace capacitor H
4. Test winding resistance, replace field winding if necessary H
5. Test diodes, replace if necessary H
6. Set front panel switch to Number 3
7. Reset circuit breaker
1. Adjust engine speed H
2. Test diodes, replace if necessary H
3. Replace capacitor H
4. Test winding resistance, replace field winding if necessary H
5. Adjust setting on front panel to number 3
1. Replace capacitor H
2. Adjust engine speed H
3. Adjust setting on front panel to number 3
1. Test diodes, replace if necessary H
2. Adjust engine speed H
3. Reduce the applied load
4. Adjust setting on front panel to number 3
1. Refer to engine manual
2. Referring to the wiring diagram, clean and reconnect all wiring H
3. Remove all loads, then apply each one individually to determine which
one is causing erratic function
1. Tighten all mountings
2. Test winding resistance, replace field winding if necessary H
Test load devices for shorts. Replace defective load device.
3. Replace bearing
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