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5.1 TROUBLESHOOTING GUIDE
Problem Cause Correction
The engine will not crank. 1. Fuse blown. 1. Correct short circuit condition,
replace 15A fuse in generator
control panel.
2. Loose, corroded or defective 2. Tighten, clean or replace
battery cables. as necessary.
3. Defective starter contactor. (7 kW) 3. *
4. Defective starter motor. 4. *
5. Dead Battery. 5. Charge or replace battery.
The engine cranks but 1. Out of fuel. 1. Replenish fuel/Turn on fuel valve.
will not start. 2. Defective fuel solenoid (FS). 2. *
3. Open #14 wire from 3. *
engine control board.
4. Defective spark plug(s). 4. Clean, re-gap or replace plug(s).
5. Valve lash out of adjustment. 5. Reset valve lash.
6. Choke not operating. 6. Verify choke plate moves freely.
The engine starts hard 1. Air cleaner plugged 1. Check, replace air cleaner.
and runs rough. or damaged.
2. Defective spark plug(s). 2. Clean, re-gap or replace plug(s).
3. Fuel regulator not set. 3. Set Fuel Regulator.
4. Fuel pressure incorrect. 4. Confirm fuel pressure to regulator
is 10-12” water column (0.36-0.43
psi) for LP, and 5-7” water column
(0.18-0.25 psi) for natural gas.
5. Fuel selector in wrong position. 5. Move selector to correct position.
6. Choke remains closed. 6. Verify choke plate moves freely.
The AUTO/OFF/MANUAL switch 1. Defective switch. 1. *
is set to OFF, but the engine 2. AUTO/OFF/MANUAL switch 2. *
continues to run. wired incorrectly.
3. Defective control board. 3. *
There is no AC output from 1. Main line circuit breaker is in 1. Reset circuit breaker
the generator. the OFF (or OPEN) position. to ON (or CLOSED).
2. Generator internal failure. 2. *
There is no transfer to 1. Defective transfer switch coil. 1. *
standby after utility 2. Defective transfer relay. 2. *
source failure. 3. Transfer relay circuit open. 3. *
4. Defective control logic board. 4. *
Unit consumes large 1. Engine over filled with oil. 1. Adjust oil to proper level.
amounts of oil. 2. Engine breather defective. 2. *
3. Improper type or viscosity of oil. 3. See "Engine Oil Recommendations".
4. Damaged gasket, seal or hose. 4. Check for oil leaks.
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Section 5 — Troubleshooting
Air-cooled Generators