Kohler Ford LSG-423 — Initial Ignition Timing Adjustment
Adjustments · Ignition System
For the Kohler Ford LSG-423, from the Kohler service manual.
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Before you start
- Do not puncture the secondary wires with a probe when setting ignition timing
Procedure
- Clean and mark the specified timing mark with chalk or white paint
- Disconnect the vacuum line and plug the disconnected vacuum line
- Connect a timing light to the No. 1 cylinder spark plug wire; connect a tachometer
- Start engine and reduce idle speed to 600 rpm to be sure the centrifugal advance is not operating
- Adjust the initial ignition timing to specifications by rotating the distributor
- Check the centrifugal advance by accelerating to approximately 2000 rpm
- Unplug the vacuum line, connect it, and accelerate to approximately 2000 rpm; advance should begin sooner and advance farther
- If the vacuum advance is not functioning properly, remove the distributor and check it on a distributor tester; replace the diaphragm unit if out of calibration
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Initial spark advance 10° BTDC
- Idle speed 600 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.