What engine is in the Kohler 10REOZDC?

The 10REOZDC uses a Yanmar diesel engine rated at 1800 RPM, EPA certified for stationary emergency standby use.

Is the 10REOZDC available in three-phase?

Yes. The 10REOZDC is offered in both single-phase (120/240 V) and three-phase (120/208 V) configurations.

Emergency? Call (831) 375-1463 — 24/7 response

Kohler · REOZ Series (Diesel Commercial Standby)

Kohler 10REOZDC

10 kW standby / 9 kW prime · Diesel · Liquid-cooled

10 kW diesel commercial standby generator. Compact Yanmar-powered diesel for small commercial, retail, and light institutional applications.

Standby power: 10 kW / 9 kW prime
Voltage options: 120/208V, 120/240V
Frequency / Phase: 60 Hz · 1/3-phase
Engine: Yanmar 3TNV82A · 1.33L

Overview#

The Kohler 10REOZDC is a 10-kilowatt diesel commercial standby generator powered by a Yanmar engine at 1800 RPM. It is the smallest unit in the REOZ diesel lineup, designed for small commercial facilities, retail locations, and light institutional applications where diesel fuel independence is required. The unit features a brushless wound-field alternator with PowerBoost excitation and sustained short-circuit capability up to 300% of rated current.

Our service experience#

OnPoint services small diesel standby generators across Northern California for commercial customers who need fuel-independent backup power. The compact Yanmar platform in the 10REOZDC is reliable and straightforward to maintain, with standard annual PM covering oil, filters, and coolant inspection.

Engineering specifications

Physical

Length: 68.1 in
Width: 33.9 in
Height: 35.4 in
Wet weight: 1,455 lb

Fuel system & runtime

Fuel use @ full load: 1.1 GPH
Fuel use @ 75% load: 0.7 GPH

Photos

Documents & downloads

Spec sheets & manuals

Spec sheet (datasheet)

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Estimate runtime for the Kohler 10REOZDC

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

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Generator size

Fuel

Fuel tank capacity

gal

Load

Override full-load GPH (optional)

GPH

Estimated runtime

235.7 hours(9.8 days)

Fuel consumption ≈ 0.85 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Service intervals

Manufacturer-recommended intervals for the Kohler 10REOZDC under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter: Every 200 hours or 12 months
Coolant change: Every 2000 hours
Air filter: Every 500 hours
Fuel filter: Every 200 hours
Major overhaul: ≈ 8,000 hours
Load bank test: Every 12 months

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

Component	Symptom	Typical hours	Severity
Fuel quality / degradation	Injector fouling, hard starting, filter clogging	4,380+	moderate
Coolant thermostat	Overcooling, extended warmup, high fuel consumption	6,000+	minor
Battery (starting)	Slow crank, failed exercise	8,760+	minor

Frequently Asked Questions

What engine is in the Kohler 10REOZDC?: The 10REOZDC uses a Yanmar diesel engine rated at 1800 RPM, EPA certified for stationary emergency standby use.
Is the 10REOZDC available in three-phase?: Yes. The 10REOZDC is offered in both single-phase (120/240 V) and three-phase (120/208 V) configurations.

Compatible equipment

Transfer switches

More in the REOZ Series (Diesel Commercial Standby)

Kohler's diesel commercial standby series — 10 to 510 kW, John Deere and Kohler engines, built for life-safety loads.

View all 33models in this series →

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