Re: omc 4hp timing marks

[legendre]

Any motor with used points, that you can reasonably expect to remain relatively stable, should be set for the "correct" timing. As fleettwin mentions, the other mark is there to account for initial break-in of a new set, which prevents the engine from running at a retarded angle once the new points settle.

Static timing with a continuity light / buzz-box is really just an initial ballpark, enough to get you up & running close to the mark. Final timing should always be set dynamically, using a strobe, if at all possible.