HomeKohlerKohler 900REOZM

Kohler 900REOZM Generator Set

The Kohler 900REOZM is a 970 kW (1213 kVA) Diesel standby generator set powered by a Mitsubishi S12H-Y2PTAW-1 engine. It is available at 240/416 V, 277/480 V, 220/380 V and 347/600 V, 3-phase and 60 Hz. It holds about 200 L (52.8 gal) of oil and 288 L (76.1 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 2 batteries rated 1150 CCA at 12 V. The set measures 5051×1931×2571 mm (198.9×76.0×101.2 in). The same S12H-Y2PTAW-1 engine also powers generator sets from Generac, Rudox Power Generation and Simson-Maxwell.

970 kW
Standby
37.11 L
Displacement
200.0 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power970 kW
Standby kVA1213
Prime power915 kW
EmissionsTier 2 EPA-Certified for Stationary Emergency Applications
ControllerAPM402, Decision-Maker 550, Decision-Maker 6000
Oil capacity200.0 L
Alternator5M4036, 5M4038, 5M4168, 5M4280 (4-pole, Class H insulation)
Voltage options240/416 V, 277/480 V, 220/380 V, 347/600 V
Phase3
Power factor0.8
Battery cranking1150 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity288 L
Max ambient40 °C
Dimensions (L×W×H)5051×1931×2571 mm

Engine

Mitsubishi S12H-Y2PTAW-1
Oil capacity200.0 L
Coolant capacity288.0 L
Displacement37.11 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Mitsubishi S12H-Y2PTAW-1
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter×4 find
Fuel filterSecondaryGM13947 Amazon eBay $79.99 PartsGeek
Oil filter×5GM13942 Amazon eBay $25.00 PartsGeek
BeltGM14526 Amazon eBay $39.80 PartsGeek
CoolantDemineralized water or distilled water, 40-60% anti-freeze based on a theoretical temperature that is 9-18°F (5-10°C) below the lowest temperature expected in the area
Oil200.030 hr

Common questions

What is the power rating of the Kohler 900REOZM?

The Kohler 900REOZM is rated 970 kW standby (1213.0 kVA).

What engine does the Kohler 900REOZM use?

The Kohler 900REOZM is powered by the Mitsubishi S12H-Y2PTAW-1 engine.

What fuel does the Kohler 900REOZM use?

The Kohler 900REOZM runs on Diesel.

What is the oil capacity of the Kohler 900REOZM?

The Mitsubishi S12H-Y2PTAW-1 engine in the Kohler 900REOZM has an oil capacity of 200.0 liters.

What alternator does the Kohler 900REOZM use?

The Kohler 900REOZM uses a 5M4036, 5M4038, 5M4168, 5M4280 alternator. It has 4 poles. Insulation class H.

Parts

15
Part #DescriptionQtySystem
01865Fuel/Water Filtering SystemFuel filter PartsGeek
18650Oil filter PartsGeek
01858Engine Oil RecommendationsService part / kit PartsGeek
01859Serial Number LocationsService part / kit PartsGeek
01860GFCI Receptacle and Interior Light TimerService part / kit PartsGeek
01861Component Locations - Left SideService part / kit PartsGeek
01862Component Locations - Right SideService part / kit PartsGeek
01863Control PanelService part / kit PartsGeek
01864Digital ControllerService part / kit PartsGeek
01866Parallel Setup and OperationService part / kit PartsGeek
01867Generator Output ConnectionsService part / kit PartsGeek
01868Voltage RegulatorService part / kit PartsGeek
01870A299X- 68-03 fos! 104 F1035-12045 25-01 | 29 5 | F1805-10020 68-01 fo5 19Service part / kit PartsGeek
01871Maintenance schedule and basic maintenance tasks for MCG1000MT2Service part / kit PartsGeek
01873Maintenance schedule and extended maintenance tasks for MCG1000MT2Service part / kit PartsGeek

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.

Fuel consumption

RatingLoadL/hgal/h
Prime25%67.017.6
Prime50%129.034.1
Prime75%188.049.6
Prime100%242.064.0
Standby25%73.019.3
Standby50%141.037.3
Standby75%204.054.0
Standby100%263.069.4

Available documents

Brochure (Kohler)Brochure — G6-39 0918AZ (Kohler)Spec sheet — Kohler-900REOZMD (Kohler)Parts manual — tp6057 (Kohler)Wiring diagram — tp6289 (Kohler)Wiring diagram — tp6813 (Kohler)