Kohler MPAC 1200 / MPAC 1500 — Engine Start Test Procedure
Testing & diagnosis · Engine start contacts
For the Kohler MPAC 1200 / MPAC 1500, from the Kohler service manual.
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Before you start
- Accidental starting. Disconnect the battery cables before working on the generator set; remove negative lead first.
Procedure
- Start with the transfer switch in the Source N position. Connect an ohmmeter or test lamp across the engine start contacts.
- Models KSS/KSP: Pins 8 and 9 of connector P1. Models KGS/KGP: Pins 5 and 10 of connector P1.
- Disconnect Normal power from the transfer switch and verify the engine start contacts close.
- Reconnect Normal power and verify the engine start contacts open after applicable time delays.
- If contacts do not operate, replace the ATS controller.
- Press the Test button to initiate a test sequence and verify the engine start contacts close.
- Press the End button; verify the contacts open after the engine cooldown time delay.
Tools required
- Ohmmeter or test lamp Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.