Need help?Do you have a question about the Onan NHM Series and is the answer not in the manual?
Essential general safety measures to follow before and during service.
Critical warning about the lethal nature of generator voltage.
Precautions related to fuel handling and storage due to flammability.
Warnings about the dangers of engine exhaust gases, particularly carbon monoxide.
Safety advice regarding hazards from moving mechanical parts.
Precautions for handling batteries due to explosive gases.
Torque values for BGM engine components in foot-pounds and Newton-meters.
Torque values for NHM engine components in foot-pounds and Newton-meters.
General safety precautions and hazard awareness for servicing.
Guide to diagnosing and resolving engine primary system issues.
Troubleshooting steps for diagnosing low engine power issues.
Causes and corrective actions for engine overheating.
Troubleshooting steps for low oil pressure conditions.
Procedure to quickly test the ignition system for misfires.
Procedures to test the ignition module and coil for proper operation.
Instructions for adjusting idle fuel mixture on gasoline and LPG carburetors.
Adjusting main fuel mixture and governor droop.
Troubleshooting steps for when the engine fails to crank.
Troubleshooting steps for when the engine cranks but doesn't start.
Troubleshooting for when the generator fails to stop after the switch is turned off.
Guide to troubleshooting common generator problems.
Troubleshooting for lack of AC output voltage.
Troubleshooting for incorrect AC output voltage levels.
Troubleshooting steps for generator overheating.
Procedure to check the genset's rated output.
Guide to troubleshooting the electronic ignition module.
Guide for checking the rotor and stator components.
To Next Page
General