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.

Kohler Kohler 10REOZDC generator — specifications and details
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

Kohler 10REOZDC — product photo

Documents & downloads

Spec sheets & manuals

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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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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.

ComponentSymptomTypical hoursSeverity
Fuel quality / degradationInjector fouling, hard starting, filter clogging4,380+moderate
Coolant thermostatOvercooling, extended warmup, high fuel consumption6,000+minor
Battery (starting)Slow crank, failed exercise8,760+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

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.

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