The Magnum MMG185DCAN6 is a 188 kW (235 kVA) standby generator set powered by a John Deere PE6068HF485 engine. It is available at 600 V, 480 V, 208 V and 240 V, 3-phase, 60 Hz and rated 226 A. It holds about 13.7 L (3.6 gal) of oil and 31.5 L (8.3 gal) of coolant. Starting uses 1 battery rated 1000 CCA at 12 V. The set weighs about 2953 kg (6510 lb). An integrated tank holds 1295 L (342.1 gal). The same PE6068HF485 engine also powers generator sets from John Deere.
What is the power rating of the Magnum MMG185DCAN6?
The Magnum MMG185DCAN6 is rated 188 kW standby (235.0 kVA).
What engine does the Magnum MMG185DCAN6 use?
The Magnum MMG185DCAN6 is powered by the John Deere PE6068HF485 engine.
What is the oil capacity of the Magnum MMG185DCAN6?
The John Deere PE6068HF485 engine in the Magnum MMG185DCAN6 has an oil capacity of 13.7 liters.
What alternator does the Magnum MMG185DCAN6 use?
The Magnum MMG185DCAN6 uses a Marathon 431PSL6505 alternator.
Troubleshooting
13
Fault codes
Code
Meaning
Wrn Gen L1<V
Warning: Generator Line 1 Voltage < V
Sd Gen L1 <V
Shutdown: Generator Line 1 Voltage < V
Sd Gen L2 <V
Shutdown: Generator Line 2 Voltage < V
Sd Gen L3 <V
Shutdown: Generator Line 3 Voltage < V
SD
Engine Temp Sd
Wrn
Engine Temp Wrn
WRN
SprinkIActive
Symptoms & remedies
Symptom
Cause
Remedy
LOW FUEL LEVEL SHUTDOWN
Fuel level is low or fuel lines are running dry.
Check the fuel level on the LCD window. Confirm that the generator is sitting level to ensure an accurate reading. Check for leaks in the fuel tank. The fuel tank should not run dry under normal circumstances. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage.
LOW OIL PRESSURE SHUTDOWN
Oil pressure is less than 20 psi (138 kPa).
Check the level of the engine oil with the dipstick. Visually inspect the engine for oil leaks. If the oil level is good, restart the unit and verify the loss of oil pressure. Check the oil pressure sender.
LOW COOLANT LEVEL SHUTDOWN
Coolant level in the radiator is low.
Allow the engine to cool. Check the coolant level in the radiator. Inspect coolant hoses, engine block and water pump for visible leaks. Check engine oil to verify no coolant has mixed with it.
HIGH COOLANT TEMPERATURE SHUTDOWN
Coolant temperature is 230°F (110°C) or more.
Check the coolant level in the overflow jug. Restart the engine and read the coolant temperature to verify High Coolant Temperature Shut down. Allow the engine to cool. Add coolant to the overflow jug if it is low and then check the level of coolant in the radiator. Check the radiator shroud and ducting for blockage. Inspect coolant hoses, engine block and water pump for visible leaks. Check the tension of the serpentine drive belt for the water pump. If no other problems are found, remove the load on the generator and restart the engine.
OVERCRANK SHUTDOWN
Check the fuel level in tank. Check for proper operation of the fuel pump. Check air filter for blockage. If the engine will not start, consult the engine operator’s manual for additional information on trouble-shooting starting problems.
OVERSPEED OR UNDERSPEED SHUTDOWN
Disconnect all loads and r
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.