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36 B starting problem!

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Ronnie

01-13-2003 21:14:21




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I have a 36 B that starts the first spin of the flywheel when the tractor is cold, but when I attempt to crank it again, it won't crank. When it sits for a while, it starts fine.
Can someone help?
Thanks, Ronnie




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John T

01-14-2003 05:50:35




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 Re: 36 B starting problem! in reply to Ronnie, 01-13-2003 21:14:21  
Ronnie, I have a 38 B that acts the same way often (easy start cold but not as easy warm) and it has a perfect mag and rebuilt carb, and Ive decided it takes experience to see how it starts best hot with diff throttle and choke etc settings. I shut mine down by turning off the gas, and when I restart, it may start the very first cylinder pull (it always at least pops then) but if not, then its difficult. If it dotn start first warm pull, I set my throtle to fairly wide open and the choke to about 7/8 seems to work best. If that dont do it, I wait a bit then run full choke 1 pull only then about half choke. Of course, this asumes you dont have a mag problem where a warm coil might be weak. It wont hurt to check the points for a clean non gray oxide build up and certainly no carbon or pits and gaped at 0.015 or slghtly more, and I have best luck with Autolite 3077 the hotter side wire type electrode plugs. Good Luck, Ol John T Nordhoff in Indiana

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Clooney

01-14-2003 03:38:25




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 Re: 36 B starting problem! in reply to Ronnie, 01-13-2003 21:14:21  
Ronnie, that's not an uncommon problem on the 2-cylinder hand starts. Sometimes how you stop the engine can make a big difference; don't choke it, or stall it, but close the fuel valve & run it out of fuel. Once stopped, open the throttle all the way & leave it open to let fuel vapors out. With those all-fuel manifolds the fuel turns to vapor just sitting in that hot all-fuel carb & manifold after shutdown.
~For the hot re-starts; try different throttle settings, maybe try the first turn with the throttle wide open then go with an almost closed throttle & work from there. Try different choke settings, sometimes turning the flywheel backwards a turn or so before starting will help?
~If different shut down & starting techniques don't improve the hot starting, [& when the stating difficulty is happening] take an old spark plug & open the gap to about 3/16" then install it in a plug wire & lay it on the block, then crank the engine. You should have a blue spark that jumps that 3/16� gap repeatedly, if not, suspect a weak coil, impulse problem, or other mag problem. If you have a good spark you will have to work with the starting techniques & maybe just live with the problem ..

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Wayne Swenson

01-13-2003 21:32:57




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 Re: 36 B starting problem! in reply to Ronnie, 01-13-2003 21:14:21  
Check & see if the spark is weak when warm. Your mag may be in need of servicing.



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