What is the difference between the 250REOZJD and the 250REOZJE?

The 250REOZJD and 250REOZJE use different alternator frame sizes. Both are powered by John Deere engines in the 250 kW class but differ in alternator configuration and available voltage options.

What engine powers the Kohler 250REOZJD?

The 250REOZJD uses a John Deere turbocharged diesel engine running at 1800 RPM with Tier 3 emissions certification.

Does OnPoint service the Kohler 250REOZJD?

Yes. OnPoint Generators provides maintenance, repair, and load bank testing for Kohler REOZ diesel generators throughout Northern California.

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

Kohler · REOZ Series (Diesel Commercial Standby)

Kohler 250REOZJD

Name: Kohler 250REOZJD
Brand: Kohler
SKU: 250reozjd
Availability: InStock

255 kW standby / 230 kW prime · Diesel · Liquid-cooled

250 kW diesel commercial standby generator powered by John Deere. JD-frame variant for commercial, healthcare, and institutional applications.

Standby power: 255 kW / 230 kW prime
Voltage options: 277/480V, 120/208V
Frequency / Phase: 60 Hz · 3-phase
Engine: John Deere 6090HF484 · 9L
EPA / Emissions: Tier 3
Alternator: Kohler

Commercial Healthcareindustrial-lightGovernment

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Overview#

The Kohler 250REOZJD is a 250-kilowatt diesel commercial standby generator powered by a John Deere engine at 1800 RPM. The JD suffix designates a specific alternator frame configuration, distinguishing this model from the 250REOZJE variant. Both serve the same 250 kW class but offer different alternator and enclosure options.

Our service experience#

OnPoint Generators services Kohler REOZ diesel generators throughout Northern California. We provide annual NFPA 110 maintenance, semi-annual inspections, and load bank testing for mid-range commercial diesel units.

Engineering specifications

Physical

Length: 140 in
Width: 50 in
Height: 108 in
Wet weight: 8,000 lb

Documents & downloads

Spec sheets & manuals

Parts manual

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Estimate runtime for the Kohler 250REOZJD

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

14.5 hours(0.6 days)

Fuel consumption ≈ 13.77 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 250REOZJD under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter: Every 500 hours or 12 months
Coolant change: Every 6000 hours
Air filter: Every 1000 hours
Fuel filter: Every 500 hours
Major overhaul: ≈ 15,000 hours
Load bank test: Every 12 months

Frequently Asked Questions

What is the difference between the 250REOZJD and the 250REOZJE?: The 250REOZJD and 250REOZJE use different alternator frame sizes. Both are powered by John Deere engines in the 250 kW class but differ in alternator configuration and available voltage options.
What engine powers the Kohler 250REOZJD?: The 250REOZJD uses a John Deere turbocharged diesel engine running at 1800 RPM with Tier 3 emissions certification.
Does OnPoint service the Kohler 250REOZJD?: Yes. OnPoint Generators provides maintenance, repair, and load bank testing for Kohler REOZ diesel generators throughout Northern California.

Why we recommend Kohler

Kohler is our primary recommendation for commercial standby power. We sell and service the full Kohler line — RCA residential, RCL light commercial, KG industrial diesel, and REOZ large-frame — and our technicians are factory-trained on every product family.

We are an authorized Kohler dealer with factory-trained technicians. Kohler is the majority of our new generator sales today, spanning residential through large industrial. Our parts inventory is stocked for same-day Kohler service.

See all Kohlergenerators →

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Last reviewed: June 13, 2026