Kohler — Test Ignition Module
Testing & diagnosis · Electronic magneto ignition module
From a Kohler service manual covering: MV16, MV18, MV20. Check it applies to your exact model before use.
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Before you start
- Zero ohmmeter on each scale before testing.
Procedure
- Measure primary resistance from kill terminal B to laminations A.
- Primary resistance should be 5 to 1000 ohms one direction.
- Reverse leads; primary resistance should be 30,000 ohms minimum.
- Measure secondary resistance between leads C and D.
- Secondary resistance should be 22,000/42,000 ohms.
- Replace module if readings are out of range.
Tools required
- Ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Primary 5 to 1000 ohms / 30,000 ohms min.
- Secondary 22,000/42,000 ohms
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.