- Tue May 22, 2012 9:22 am
#12806
Hi John L. also from the same notes.......
"As most of your riding will be done with the timing fully advanced, we suggest that this is also
checked. If the advance/retard unit is worn, then most of the time the engine will be overadvanced.
The advance/retard assembly will give approximately 8.5mm (21/64)†or 32 degrees at
full advance before TDC."......"To check the full advance timing position, mark the top
dead centre tool with the advance setting above the TDC
mark. Turn the engine back, then forwards until the piston
reaches this new mark. Now turn on the ignition and
carefully with your fingers, rotate the points cam
clockwise, against the pressure of the springs. If
everything is correct, you will hear the snap as the points
open exactly as you reach the limit of the travel, and the
ammeter will flick back to the centre. Should you find, due
to wear etc, (see photo on right, this shows a common
place of wear on the rear of the auto advance unit), this
setting is wrong, then reset the ignition timing with the
advanced figures whilst holding the points cam against its
springs. It is better to have the timing correct in the fully
advanced position and put up with a slightly poor tickover.
However if there is a major discrepancy, then it is
time to renew the worn parts."