Kohler PCH680 / PCH740 — TPS Learn Procedure

Adjustments · Throttle Position Sensor (TPS)

For the Kohler PCH680 / PCH740, from the Kohler service manual.

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Procedure

1. Turn idle screw clockwise one full turn prior to key/ignition ON after ECU Reset.
2. Start engine, run at low idle until engine is warm.
3. Idle speed must be above 1500 RPM. If below, turn idle screw up to 1700 RPM; shut down engine and perform ECU Reset again.
4. Adjust idle speed down to 1500 RPM. Allow engine to dwell at 1500 RPM for about 3 seconds.
5. Adjust idle speed to final specified speed setting.
6. Turn key/ignition OFF and count to 10 seconds. Learn procedure is complete.

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.

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