Kohler — Solenoid Pull-in and Hold-in Coil Tests
Testing & diagnosis · starter solenoid
From a Kohler service manual covering: CH18, CH20, CH22, CH23, CH25, CH620, CH630, CH640, CH670, CH680, CH730, CH740…. Check it applies to your exact model before use.
Applies to: Kohler CH18, Kohler CH740
Before you start
- DO NOT leave 12 volt test leads connected to solenoid longer than necessary.
Procedure
- Disconnect all leads from solenoid. Remove mounting hardware and separate solenoid from starter.
- Pull-in actuation: use a 12 volt power supply and 2 test leads. Connect 1 lead to flat spade S/start terminal. Momentarily connect other lead to lower large post terminal. Solenoid should energize (au
- Pull-in continuity: use an ohmmeter on audible or Rx2K scale, connect leads to 2 large post terminals; perform actuation test and check for continuity.
- Hold-in function: connect 12 volt test lead to flat spade S/start terminal and other lead to body of solenoid. Push plunger IN and check coil holds plunger retracted.
- Hold-in continuity: perform preceding function test and check for continuity.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Kohler CH740 →
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.