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Hi All,
I don't know if this is already here - I certainly couldn't find it. I have a Max2 with a Kohler Command EFI 29hp motor. It was in pretty poor condition, servicewise, and I couldn't figure out the wiring beyond basic connection - ie, engine running. So I got hold of the service manual, cut open the damaged harness and found the correct wires to get this thing running. I thought I'd post my notes here in case it helps anyone wlse.
There are 5 wires at the harness termination. You might have a 6 or 5 way connector - or something weird like mine which had a 3 way connector with two wires connected.
They are colored like this;
1) Red-White - Ignition - via the ignition switch to 12v. Disconnect to shut off motor.
2) White ( might look a little yellow ) - Safety switch. Must be connected to ground to run.
3) Dark Blue - Starter - When connected to 12v, will start the engine.
4) Dark Green. Oil Pressure Switch. Seems Normally Open, so I assume it closes when there's enough oil pressure to be satisfactory. Should probably be looped back to White if you want the engine to shut down when there's no oil. Need to experiment here and test this.
5) TAN. Also looks yellow. Can be distinguised from white as it's a brownish white. I needed to cleen both wires to be certain. This is the Malfunction Indicator Light. It goes to the GROUND side of the light, and the other side goes to the battery. Just a little panel light. I don't recall seeing this light on my dashboard on the MAX2.
OK, so (1) needs to be 12v on the red-white and (2) needs to be ground on the White wire. If you have this, you can start and run the engine, so only 3 wires needed for operation. DO NOT GROUND OUT ANY WIRES TO STOP THE ENGINE. This engine doesn't ground out the ignition to stop it. Just disconnect 12v from the ignition and it will stop.
Hope this might help someone someday. When I reconnect the engine up, and rewire the harness, I'll leave some comments here post-test in case it helps others. At this point, the above comes from reading through the service manual.
David.
I don't know if this is already here - I certainly couldn't find it. I have a Max2 with a Kohler Command EFI 29hp motor. It was in pretty poor condition, servicewise, and I couldn't figure out the wiring beyond basic connection - ie, engine running. So I got hold of the service manual, cut open the damaged harness and found the correct wires to get this thing running. I thought I'd post my notes here in case it helps anyone wlse.
There are 5 wires at the harness termination. You might have a 6 or 5 way connector - or something weird like mine which had a 3 way connector with two wires connected.
They are colored like this;
1) Red-White - Ignition - via the ignition switch to 12v. Disconnect to shut off motor.
2) White ( might look a little yellow ) - Safety switch. Must be connected to ground to run.
3) Dark Blue - Starter - When connected to 12v, will start the engine.
4) Dark Green. Oil Pressure Switch. Seems Normally Open, so I assume it closes when there's enough oil pressure to be satisfactory. Should probably be looped back to White if you want the engine to shut down when there's no oil. Need to experiment here and test this.
5) TAN. Also looks yellow. Can be distinguised from white as it's a brownish white. I needed to cleen both wires to be certain. This is the Malfunction Indicator Light. It goes to the GROUND side of the light, and the other side goes to the battery. Just a little panel light. I don't recall seeing this light on my dashboard on the MAX2.
OK, so (1) needs to be 12v on the red-white and (2) needs to be ground on the White wire. If you have this, you can start and run the engine, so only 3 wires needed for operation. DO NOT GROUND OUT ANY WIRES TO STOP THE ENGINE. This engine doesn't ground out the ignition to stop it. Just disconnect 12v from the ignition and it will stop.
Hope this might help someone someday. When I reconnect the engine up, and rewire the harness, I'll leave some comments here post-test in case it helps others. At this point, the above comes from reading through the service manual.
David.