my experience with some old villiers engines is that the timing marks can not always be relied upon to be correct.
i cannot see your magneto housing .its been removed to show the points etc. most of the villiers ive dealt with have the camming device (Cam)built into the housing and the timing and marks corresponds to it.However in saying that, you would be wiser to remove the spark plug and poke a screwdriver down the whole and rotate the engine up to top dead centre.because the villiers have no woodruff key or keyway (some do )you need to set the timing by manually adjusting then tightening locknut.
to get it close to correct,, rotate the engine backwards till the piston lowers 3mm from tdc.this is the position that the points should just start to open.
i have a link somewhere of a really good explanation for villiers engines . will try to find it and add it to this post
no luck finding that info must have been removed?
i did find the correct position for the piston in imperial, 3/16th of an inch below tdc.
i dont know if you engine is a 2 or 4 stroke .if its 4 stroke then this needs to be on the compression stroke ,not exhaust stroke.
Last edited by Gizmo; 20/04/14 04:56 AM.