Cummins/Onan BT BCA 400 - 4X U / 3101 E — Overcrank Test

For the Cummins/Onan BT BCA 400 - 4X U / 3101 E.

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Procedure

1. Disconnect the positive lead from the starter.
2. Insulate lead so it cannot touch metal frame.
3. Move the operation selector switch on the engine control to REMOTE.
4. Move the Test/Normal/Retransfer switch to TEST. Fault or overcrank lamp on engine control should light at the end of crank period (usually factory set at 75, +15 seconds).
5. Move the Test/Normal/Retransfer switch to NORMAL.
6. Move the generator set operation selector switch to STOP.
7. Reconnect positive lead to starter.

Source: manual:962-0108 Onan BT 150 - 1000 Operators Manual (6-1983) .pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.