If the impulse assembly isnt working THERES NO WORRY ABOUT HAND CRANK STARTING BECAUSE AT SUCH SLOW CRANKING SPEED THERES NOT GONNA BE SUFFICIENT SPARK.
The reason why its needed on magneto equipped hand start tractors is because theres practically no spark energy created when cranking soooooooo slowwwwwwwwww... Sooooooo what it does is wind up then trip a spring so the magnetic rotor spins fast past the coil SO THERE IS A GOOD SPARK. Then once running over 250 RPM the assembly drops out altogether i.e. no more spring wind up and tripping.....
When the impulse assembly is working the static start timing is 20 to 30 degrees lagging from the run time advance, i.e. she fires right near TDC so theres no kickback. Again if its not working (no spring wind up and trip) then theres NOT gonna be any spark at the wrong time to worry about
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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