Re: Adjusting the Timing on a

Posted by Tim Cole On 2022/6/26 6:54:07

Before you start reference the service data under Section 8, page 63 of the service manual available on this site.

400-450 rpm with advance connected.

Accurate results depend on carefully locating and marking the dampener/pulley.

However, sometimes those dampeners aren't exactly accurate when they are old. Thus, as a pre-check connect a test light to the distributor, line up the timing marks and rotor, then rotate the distributor clockwise until the light goes out. If the stroboscopic timing is near the mark then the dampener is okay.

Do not rotate the motor counterclockwise to line up the marks. Only clockwise.

Next, when the engine is running connect a dwell meter and raise the rpm. The dwell should be stable. If it is not, then the distributor bushing is probably worn and needs to be reconditioned. This problem will cause spark knock and overheating. Sending the unit to somebody who has the SUN distributor machine can determine if the problem is easy to fix, or if there is wear in the camshaft system.

If you are having this problem, then perhaps you should do this test first.

If everything is set properly the motor will start immediately.