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Home›Repair guides›Kohler›Install Ignition Module and Set Air Gap

Kohler M18 / M20 — Install Ignition Module and Set Air Gap

Installation

For the Kohler M18 / M20, from the Kohler service manual.

Applies to: Kohler M18 / M20 engine

Before you start

  • Do not connect 12 volts to ignition module; it can burn out

Procedure

  1. Install module and hex flange screws to bracket; tighten slightly.
  2. Insert a .014 in feeler gauge between magnet and module.
  3. Loosen screw so magnet pulls module against feeler gauge; tighten securely.
  4. Remove feeler gauge; final air gap should be .008/.012 in.
  5. Rotate flywheel and check magnet does not strike module.
  6. Install kill lead to kill terminal and reinstall blower housing.

Tools required

  • .014 in feeler gauge or shim stock Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Final air gap .008/.012 in

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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