Cummins/Onan 1.7EGHAA Engine Engine

• UNIT RUNS THEN STOPS
  Fix: Add fuel. Add oil. Reduce oil level.
• UNIT RUNS BUT SURGES
  Fix: Add fuel. Add oil. Reduce oil level.
• NO AC OUTPUT VOLTAGE
  Cause: Open AC circuit breaker due to an overload
  Fix: Remove all loads, re-set circuit breaker, check tools or appliances being used for defects. Do not exceed generator set rated load specifications.
• FAILS TO CRANK (ELECTRIC START MODELS)
  Cause: Low Battery, Bad battery connection, Oil is too heavy, Load is connected
  Fix: Check battery electrolyte level and charge. Clean and tighten all battery and cable connections. Replace with lighter oil. Always disconnect load while starting.
• EXHAUSTING BLACK SMOKE
  Cause: Open DC circuit breaker due to an overload
  Fix: Remove all loads, reset circuit breaker, check for an overload or short circuit. Do not exceed generator set rated load specifications.
• ENGINE WONT START
  Cause: Loose or worn spark plug lead, Faulty spark plug, Dirty fuel filter or generator set at too steep of an angle, Governor out of adjustment or lean fuel mix
  Fix: Check spark plug lead connection. Remove and clean or replace spark plug. Check fuel filter and generator set angle. Contact an Onan service center.
• CRANKS SLOWLY (ELECTRIC START MODELS)
  Cause: Choke closed, Dirty air filter, Rich fuel mixture
  Fix: Open choke. Clean or replace air filter. Contact an Onan service center.

Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan 1.7EGHAA.