The APM403 is a generator-set controller. It is used on generator sets from John Deere, Kohler and SDMO, including the J110K, 2000REOZM, D700 and J40UM.
Used across brands: John Deere, Kohler, SDMO
| Symptom | Remedy |
|---|---|
| A sudden and unusual noise is heard | THE ENGINE MUST BE STOPPED IMMEDIATELY |
| The colour of the exhaust fumes suddenly darkens | THE ENGINE MUST BE STOPPED IMMEDIATELY |
| The engine rpms suddenly increase and decrease | THE ENGINE MUST BE STOPPED IMMEDIATELY |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.