5‐2 Troubleshooting and Maintenance MN2408Problems and SolutionsSome of the more common problems are listed in Table 5‐1. This information is intended to be acheck or verification that simple causes can be located and fixed. It is not an exhaustive “how to”for all types of problems. Procedures that require in depth knowledge or skills (like flashing thefield) should be referred to a qualified generator service center.Table 5‐1 General Troubleshooting GuideProblem Possible Cause RemedyEngine cranks but will not start No fuel.Low Oil LevelRestricted air flow.No spark.No engine speed during crankCheck that fuel valves are ON. Check fuel level in fuel tank.Low Oil Pressure Sutdown activated. Replensih oil to full.Check/replace air filter.Check/replace spark plug(s).Check that engine switch is in Start position.The magnetic pickup must be correctly adjusted and operating.Engine will not crank (electric start) Dead battery.Emergency Stop LED is ONRemove battery and trickle charge or replace with new battery.Never Jump Start.Reset controller after an Emergency Stop.Engine starts but will not run smoothly Fuel or ignition problem Refer to engine manual.Engine overheats Excessive loadDebris or dirt buildup on engineRemove one or more electrical loads.Remove debris. Clean engine surfaces to allow cooling.No output voltage Ciruit Breaker tripped or failed.Internal failure of AlternatorReset circuit breaker or replace if required.Return to factory for repair.Output voltage varies Irregular speed (fixed speed mode)Fluctuating speed (fixed speed mode)Loose terminal or load connectionsCheck engine for malfunction or load for fluctuationStabilize load. The addition of a lamp load (resistance load) maycompensate partially for load changes caused by intermittent motoroperation. Do not overload.Verify all connections and terminal tighness.Low output voltage Low engine speedExcessive loadHigh resistance connections -connections will be warm or hotInternal failure of AlternatorLow power factorVerify engine RPM.Check engine for malfunction or system for overload. Reduce load.Verify all connections and terminal tighness.Return to factory for repair.Reduce inductive (motor) load. Some AC motors use about thesame current regardless of load. Do not use motors of greaterhorsepower rating than is necessary to move the mechanical load.High output voltage Excessive speed (fixed speed mode) Check engine for malfunction. Verify engine RPM.Electrical shock when frame is touched Static charge.Grounded armature or field coil.Ground generator frame at local reference ground (see Section 3).Return to factory for repairMechanical noise Internal failure of AlternatorLoose or misaligned couplingReturn to factory for repairTighten; align coupling and alternator shaft to engine shaft.