Generac Power Systems MAGNUM MMG25IF4 Operating Manual page 44

Maintenance
normal range.
○ WHEN ENGINE IS STOPPED AND COMPLETELY COOL, coolant may be added directly to the coolant
overflow jug.
• Check the oil level daily. Refer to the engine operator's manual for the proper viscosity grade of oil, including
special operating conditions such as a change in season or climate.
○ DO NOT start the unit if the engine oil level is below the add mark on the dipstick.
○ Normal operating level is in the cross-hatch pattern between the full and add markings on the dipstick.
○ Add oil only if the oil level is below the add mark on the bottom of the cross-hatch pattern on the dipstick.
DO NOT OVERFILL the crankcase.
• Check the fuel level.
• If the unit is connected to a remote start or transfer switch, make sure the remote switch is also off and tagged.
Note: If the engine was run out of fuel or the fuel tank was drained, it may be necessary to bleed the fuel lines. See
the engine operator's manual supplied with the unit.
38 MMG25I-35D-45I-55DF4 Operating Manual 36949 B