Kohler — Magnetic Pickup Test
Testing & diagnosis
From a Kohler service manual covering: 4CFKM, 4CKM, 5CKM, 5CKM/SCKMR, ACKM/4CKMR. Check it applies to your exact model before use.
Applies to: Kohler 4CFKM, Kohler 4CKM, Kohler 5CKM, Kohler M18 engine, Kohler M20 engine
Procedure
- Verify air gap is 0.040 in. (1.02 mm) ± 0.005 in. (0.127 mm).
- Connect voltmeter to magnetic pickup leads.
- Crank engine and read voltage.
- Voltage should be 1.75 volts AC minimum.
- Replace magnetic pickup if proper voltage is not measured.
Tools required
- Voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Air gap 0.040 in. (1.02 mm) ± 0.005 in. (0.127 mm)
- 1.75 volts AC minimum during cranking
Full service-parts list: Kohler 4CFKM →, Kohler 4CKM →, Kohler 5CKM →
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.