4Lo timing Marks

[Tone]

The official way was to set the left piston at 2mm before TDC as you say at which point the two marks should line up. If not slacken the stator mounting bolts and move the stator until the marks line up and retighten the bolts. Then connect up the strobe to the left hand side and at 2000 RPM check that the marks still line up. If they don't it was a case of noting the difference and making a new mark to line up with the one on the rotor on the stator protrusion and use this as your new timing mark.
I think I'm right in saying if the mark on the flywheel is to the left of the stator mark it will make the timing advanced.
The standard timing was 2mm BTDC but seem to remember seeing on here that some people run it slightly retarded at 1.9 or 1.8mm BTDC for todays fuels.

[monkfish]

I must admit I havent strobed mine but I did change from 2 to 1.8mm BTDC as suggested on here somewhere and I found a slight improvement in the flat spot

[Norbo]

I would not trust any marks . Use a dile gage and set it to 1.8 . with unleaded they run better at this rarther then 2mm.