Kohler 200REOZV, 600REOZV, 350REOZVC, 400REOZVC, 350REOZVB, 500REOZVB Industrial Generator Sets Wiring Diagrams (tp6202)

These Kohler industrial generator sets usually sit in plant rooms, hospitals, data centers or outdoor enclosures, kicking in when the main power drops. This wiring diagram set is what I’d keep on the bench when I’m tracing control-circuit issues or verifying a repaired harness. If, for example, the set won’t transfer load after a storm and you suspect a damaged control cable, this document lets you follow each conductor from the controller, through junctions and connectors, right out to the sensors and actuators.

Applications & Use Cases

• Trace wire routing between control panels, engine accessories, and generator-mounted components to confirm correct paths after repairs.
• Identify connector pins so you can probe the right terminals without back-feeding or shorting anything.
• Isolate continuity faults when a sensor or relay isn’t responding by comparing actual readings to the shown wiring path.
• Verify retrofit work, like adding monitoring equipment, by tying into the proper circuits instead of guessing.
• Check harness replacements, ensuring each lead is landed on the correct terminal before you re-energize the system.

FAQ

Q: Can I use this on a tablet at the jobsite?

A: Yes, it works well digitally; you can zoom in on connector details and keep your hands free around the set.

Q: Is it worth printing parts of it?

A: I’d print the key diagrams you use most and keep them in a plastic sleeve near the generator for quick reference.

Safety Note

Always lock out all power sources and verify zero voltage before opening panels or handling any wiring.

Kohler 200REOZV, 600REOZV, 350REOZVC, 400REOZVC, 350REOZVB, 500REOZVB Industrial Generator Sets Index:

Wiring Diagram Cross-Reference
Generator Set
Model No. Hz
Generator Set
Spec No.
Wiring Diagram
Version No.
200REOZV 60 GM24710-GA1 1-1
200REOZV 50 GM24710-GA2 1-1
230REOZV 60 GM24720-GA1 2-1
230REOZV 50 GM24720-GA2 2-1
250REOZV 60 GM24720-GA3 2-1
250REOZV 50 GM24720-GA4 2-1
275REOZV 50/60 GM24730-GA1 3-1 or 3-2
300REOZV 50/60 GM24730-GA2 3-1 or 3-2
350REOZV 50/60 GM25343-GA2 4-1 or 4-2
350REOZVB 50/60 GM37379-GA1 3-1
350REOZVC 50/60 GM37380-GA2 4-1
400REOZV 50/60 GM25343-GA1 4-1 or 4-2
400REOZVB 50/60 GM37379-GA2 3-1
400REOZVC 50/60 GM37380-GA1 4-1
450REOZVB 50/60 GM36226-GA1, -GA4 5-1 or 5-2
500REOZV 60 GM30674-GA1 6-1
500REOZV 50 GM30674-GA2 6-1
500REOZVB 50/60 GM36226-GA2 5-1
500REOZVB 50/60 GM36226-GA3, -GA5 5-2
550REOZV 60 GM59244-GA2 7-1
600REOZV 60 GM59244-GA1 7-1

Kohler