Kohler — Test Charging System Output
Testing & diagnosis · Electrical System
From a Kohler service manual covering: 32690-12, EKT730, EKT740, EKT745, EKT750. Check it applies to your exact model before use.
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Before you start
- Electrical Shock can cause injury. Do not touch wires while engine is running.
Procedure
- Insert ammeter in B+ wire at rectifier-regulator connector.
- Run engine at 3600 RPM.
- Measure B+ to ground with DC voltmeter.
- If voltage is 13.8 volts or more, apply minimum 5 amp load.
- Observe ammeter.
- Or use carbon pile test tool at 3600 RPM.
- Adjust carbon pile voltage to 12 volts.
- Displayed amperage should be near or at maximum rated system output.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Charging system: 15 amp regulated
- Test speed: 3600 RPM
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.