Kohler 600-2000REOZM, 600-2000REOZMB Industrial Generator Sets Wiring Diagrams (tp6289)

These Kohler 600–2000REOZM/REOZMB industrial generator sets usually sit in plants, hospitals, data centers, or outdoor enclosures, taking over when the grid drops. This wiring-diagram manual is what I grab when I need to trace control circuits, verify harness routing, or confirm connections after a repair. If, for example, the set cranks but won’t pick up load, I use this to follow the signal from the controller through relays and sensors, and pinpoint where the chain breaks.

Applications & Use Cases

• Trace wire routing from the controller to sensors, breakers, and engine components to confirm correct harness installation.
• Isolate electrical faults by following each circuit and planning continuity tests at the right connectors.
• Verify retrofits or upgrades (new controller, remote start, monitoring kits) so added wiring matches Kohler’s logic.
• Confirm connector pin-outs before repinning, splicing, or replacing damaged plugs.
• Plan loom repairs and reroute wires cleanly after fire, abrasion, or rodent damage.

FAQ

Q: Can I use this on a tablet or laptop in the field?

A: Yes, it’s practical to zoom in on connector details and wire labels on a portable device next to the generator.

Q: Is it worth printing parts of it?

A: Many techs print the key diagrams they use often and laminate them for quick reference at the set.

Safety Note

Always de-energize and lock out the generator and connected circuits before probing or altering any wiring.

Kohler 600-2000REOZM, 600-2000REOZMB Industrial Generator Sets Index:

Wiring Diagram Cross-Reference
Generator Set
Model No. Hz
Generator Set
Spec No.
Wiring Diagram
Version No.
600REOZM 60 GM30612-GA1 1
600REOZM 50 GM30612-GA2 1
600REOZMB 60 GM50709-GA1 1
750REOZM 60 GM31728-GA1 1
750REOZM 50 GM31728-GA2 1
750REOZMB 60 GM31728-GA6 1
800REOZM 60 GM31728-GA3 1
800REOZM 50 GM31728-GA4 1
800REOZMB 50 GM31728-GA5 1
900REOZM 60 GM31223-GA1 1
900REOZM 50 GM31223-GA2 1
900REOZMB 60 GM31223-GA5 2
1000REOZM 60 GM31223-GA3 1
1000REOZM 50 GM31223-GA4 1
1000REOZMB 60 GM31223-GA6 2
1250REOZM 60 GM19661-GA3 3
1250REOZM 50 GM19661-GA4 3
1250REOZMB 60 GM19661-GA6 3
1600REOZM 60 GM19661-GA1 3
1600REOZM 50 GM19661-GA2 3
1600REOZMB 60 GM19661-GA5 3
1750REOZMB 60 GM19661-GA8 4
1820REOZM 60 GM30949-GA3 4
1820REOZM 50 GM30949-GA4 4
2000REOZM 60 GM30949-GA1 4
2000REOZM 50 GM30949-GA2 4
2000REOZMB 60 GM19661-GA7 4

Kohler