The ATC 250R 3um


How to Set Timing on an ATC 250R

stanoo1

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  • I Enjoy Vintage Honda ATC's
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How to Set Timing on an ATC 250R
« on: October 17, 2016, 07:40:50 AM »
How to Set Timing on an ATC 250R

Does anyone have a step by step procedure or an simple explanation of how to set timing on an ATC 250R? Not sure I even need to set the timing, I just want to verify it is set correctly and move on.

Many Thanks!

Xavier

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  • The Three Wheelin' Guy
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Re: How to Set Timing on an ATC 250R
« Reply #1 on: October 20, 2016, 02:57:57 PM »
Does someone have a manual and an official procedure on how to set the timing on an ATC 250R?

I think you can ballpark test it by removing the magneto cover and the spark plug. Stick a depth indicator or something like a narrow ruler or Popsicle stick into the plug hole.

Move the piston around until you find top dead center point. Now check the markings of the flywheel. You can only hope that when you take off the magneto cover you find an obvious problem like a broken or missing key or something physically loose in there.

disclaimer: Consult manual for a better plan!