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Generac SG025 Generator Set

The Generac SG025 is a 25 kW N.G./L.P. standby generator set powered by a Mitsubishi 4G15 engine. It is available at 120/240 V, 120/208 V and 277/480 V, single-phase, 60 Hz and rated 104.2 A. It holds about 3.79 L (1.0 gal) of oil and 6.6 L (1.7 gal) of coolant. Starting uses 1 group-27 battery at 12 V.

25 kW
Standby
1.468 L
Displacement
3.79 L
Oil capacity
1
Document types

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Specifications

FuelN.G./L.P.
Frequency60.0 Hz
Standby power25 kW
ControllerH-100
Oil capacity3.79 L
AlternatorMMC 4G15 (2-pole, Class Class F insulation)
Voltage options120/240 V, 120/208 V, 277/480 V
Phase1-phase, 3-phase
Rated current104.2 A
Power factor0.8
Battery group27F
Battery voltage12 V
Battery quantity1
Coolant capacity6.6 L

Engine

Mitsubishi 4G15
Oil capacity3.79 L
Coolant capacity7.57 L
Displacement1.468 L
Aspirationnaturally aspirated

Maintenance & consumables

for the Mitsubishi 4G15
ItemSpecCapacityPart #Interval
Air filterAir cleaner service—500 hr
Fuel filterN.G./L.P.—100 hr
Oil filterEngine oil filter—150 hr
BatteryN.G./L.P.—100 hr
BeltN.G./L.P.—100 hr
Coolant50/50 low silicate ethylene glycol base antifreeze and soft water—
OilHigh quality detergent oil SC/SD/SE/SF rated—150 hr
Spark plugN.G./L.P.—100 hr

Common questions

How many kW is the Generac SG025?

The Generac SG025 is rated 25 kW standby.

What engine does the Generac SG025 use?

The Generac SG025 is powered by the Mitsubishi 4G15 engine.

What kind of fuel does the Generac SG025 run on?

The Generac SG025 runs on N.G./L.P..

How much oil does the Generac SG025 take?

The Mitsubishi 4G15 engine in the Generac SG025 has an oil capacity of 3.79 liters.

What is the coolant capacity of the Generac SG025?

The Generac SG025 cooling system holds 6.6 liters (1.7 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What voltage does the Generac SG025 produce?

The Generac SG025 is offered in 120/240 V, 120/208 V, 277/480 V, 1-phase, 3-phase-phase.

What size battery does the Generac SG025 need?

The Generac SG025 uses 1 battery, 12 V each, group 27F, per the manufacturer specification sheet.

What alternator comes on the Generac SG025?

The Generac SG025 uses a MMC 4G15 alternator. It has 2 poles. Insulation class Class F.

Fuel consumption

RatingLoadL/hgal/h
Standby100%153.04.3

Available documents

Parts manual — 0172510SBY (Generac)

This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.