Magnum — Manual Starting of the Generator
Operation
From a Magnum operator's manual covering: MMG320, MMG320 Super Start, MMG405, MMG405 Super Start, MMG465. Check it applies to your exact model before use.
Applies to: Magnum MMG320, Magnum MMG320 Super Start, Magnum MMG405, Magnum MMG405 Super Start, Magnum MMG465, John Deere RG6090HF485 engine, John Deere RG6135HF485 engine
Before you start
- CARBON MONOXIDE: USING A GENERATOR INDOORS CAN KILL YOU IN MINUTES!
Procedure
- Move the control ON/OFF toggle switch to the CONTROL ON/I position.
- LCD window indicates MAN mode and Ready; Ready/Manual LED is lit.
- Press the green ENGINE START button.
- Prestart (Preheat) screen is displayed with a countdown from 20 seconds to zero.
- Starting screen is displayed; the engine cranks and starts running.
- Running screen displays.
- LCD toggles between Generator Display Screen and Engine Display Screen.
- If engine does not start, controller pauses 15 seconds and makes two more attempts (three total).
- If no start after three cycles, LCD shows SD Start Fail; wait two minutes and press FAULT RESET.
- Engine speeds up to a constant 1800 rpm.
- Check for excessive noise or vibration and coolant, oil or fuel leaks before applying loads.
- Check AC output voltage; fine adjust with the fine voltage adjustment screw if needed.
- Check frequency reads approximately 60 Hz with no loads.
- Switch main circuit breaker ON, then convenience outlet breakers as needed.
Specs & values
- 1800 rpm
- 60 Hz
Full service-parts list: Magnum MMG320 →
Source: Magnum operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.