Posted by pete 23 on March 19, 2010 at 10:24:06 from (173.87.0.197):
In Reply to: 706 timing posted by bobia7 on March 19, 2010 at 08:19:51:
The book and answer to your timing question are correct. The early 706 tractors had a 25 degree advance, was changed to a 22 degree advance, HOWEVER you are to set either one of them to 22 degrees at rated load speed. This is where the amount of advance is important, not at low idle. It could be very possible that the springs and weights are not advancing the spark at the correct rate at lower speed and then if you time it at that speed it can very well be way off at full speed. The maximum advance is controlled by a hole in plate and pin on cam so it will only go to that maximum set point. Also, as pointed out by Tractor Vet many times, this advance was determined to be correct for full power usage with 93 octane gasoline. Ideally one may have to back off just a tad with the lower octane fuel we use now days if you intend to use her hard or buy the higher octane gasoline.
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