Initial set, after mag had tripped, to a fraction after TDC (to prevent kick-back) - engine was turned backwards past TDC after mag tripped, then forwards to TDC, for the static set.
When running, designated plug lead was flashed in timing hole near to flywheel to illuminate the timing mark at rated speed.
Timing was then adjusted to optimum for fuels of the day. They often recommended a hat, or similar, was held over the area to improve visibility of the timing marks by reducing the ambient light level.
Just remember those fuels are not available now, so optimum timing may well be changed.
No reason why a modern timing light should not be used instead of the spark flash.
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Today's Featured Article - Restoration Story: 1951 Farmall H - by The Red (John Fritz). I have been a collector of Farmall tractors since 1990 when I first obtained part of the family farm in Eastern Indiana. My current collection includes a 1938 F20, 1945 H, 1946 H, and the recently purchased 1951 H. This article will focus on what I encountered and what I did to bring the 1951 NEAR DEATH Farmall H back to life.
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