Specifications
| Fuel | diesel |
|---|---|
| Standby power | 20 kW |
| Controller | Decision-Maker 3000 |
| Alternator | GM78570-MA6 |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | ×1 | GM42265 | Amazon eBay PartsGeek | ||
| Fuel filter | ×1 | GM32359 | Amazon eBay $26.87 PartsGeek | ||
| Oil filter | ×1 | 252834 | Amazon eBay $27.95 PartsGeek | ||
| Belt | ×1 | 225022 | Amazon eBay $65.00 PartsGeek |
Common questions
What is the power rating of the Kohler 20REOZD?
The Kohler 20REOZD is rated 20 kW standby.
What fuel does the Kohler 20REOZD use?
The Kohler 20REOZD runs on diesel.
What alternator does the Kohler 20REOZD use?
The Kohler 20REOZD uses a GM78570-MA6 alternator.
Troubleshooting
4Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Generator does not start | Faulty starter motor or battery | Check and replace the starter motor if necessary. Check and charge the battery. |
| Engine overheats | Coolant level is low, thermostat is faulty, radiator fins are dirty | Add coolant to recommended level. Replace thermostat if it is faulty. Clean radiator fins. |
| Generator produces insufficient power | Fuel filter is clogged, governor settings are incorrect | Clean or replace the fuel filter. Adjust governor settings as per manufacturer's instructions. |
| Engine runs rough | Air intake system is dirty, fuel solenoid is faulty | Inspect and clean air intake system. Check and replace fuel solenoid if necessary. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
11| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 225006 | Gasket, thermostat | 1 | Gasket | PartsGeek |
| 225022 | Belt, fan | 1 | Belt | Amazon eBay $65.00 PartsGeek |
| 249865 | Gasket, thermostat | 1 | Gasket | PartsGeek |
| 252834 | Filter, oil | 1 | Oil filter | Amazon eBay $27.95 PartsGeek |
| GM28823 | Sensor, temperature | 1 | Sensor | PartsGeek |
| GM32359 | Filter, fuel | 1 | Fuel filter | Amazon eBay $26.87 PartsGeek |
| GM34387 | Thermostat | 1 | Thermostat | PartsGeek |
| GM42265 | Element, air cleaner | 1 | Air filter | Amazon eBay PartsGeek |
| GM42266 | Element, air cleaner | 1 | Air filter | Amazon eBay $22.50 PartsGeek |
| GM47465 | Filter, oil | 1 | Oil filter | Amazon eBay $23.52 PartsGeek |
| 223316 | Fuse, 10 A, 250 V | 2 | Service 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.
Available documents
Brochure — 10REOZDC G6096 (Kohler)Installation manual — tp6393 (Kohler)Installation manual — tp6609 (Kohler)Installation manual — tp6795 (Kohler)Installation manual — tt1364 (Kohler)Reference — g260823 (Kohler)Owner's manual — tp6392 (Kohler)Parts manual — tp6802 (Kohler)Service manual — tp6394 (Kohler)Service manual — tp6794 (Kohler)Wiring diagram — adv8857 (Kohler)