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 - A Towny Goes Plowing - by Anthony West (UK). I live in an area renowned for its rural beauty. Small fields with hedgerows and trees are common place, as are small hamlets with village greens and the odd duck pond complete with swans. The center of any village once the shop is closed is the old tavern. Rustic places with cheerful names like "The Griffin" "Red Lion" or "The Plough and Harrow" are found dotted around the country lanes all over the place. The warm glow of yellowish light can be seen for quite some distance at dusk, and
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