Ford CSG-850 / WSG-858 — Initial Ignition Timing
Adjustments · Distributor
For the Ford CSG-850 / WSG-858, from the Ford service manual.
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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 so centrifugal advance is not operating.
- Adjust initial ignition timing to specifications by rotating the distributor.
- Check centrifugal advance at approximately 2000 rpm, then connect the vacuum line.
- Check vacuum advance operation; replace 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 6° BTDC, marine and industrial
Source: Ford 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.