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CASE SC

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jimbob09

Member
I NEED SOME HELP!
I just bought another 1950 SC and have been doing normal maintenance, tune ups, and fixing leaks. It starts up on first push of starter button but I am having problems with adjusting the carb. Tractor runs great with no load or in lower gear, but if I try to start out in 3rd or fourth gear it dies. The intake manifold is cold and sweating. I have adjusted the carb to the specs in the Service manual and even opened up the load adjustment about half a turn more. I need some advice from someone more experienced on these carbs and engines. Like I say I own 2 of these SC's and really like them. I am going to make one just for pulling and the other to restore and use around our property. So any help would be greatly appreciated!!!

Thanks
jimbob09
 
The first thing that I would check is the governor. If the governor is working properly, I would then check the acceleration circuit in the carb. I would loosen the throttle lever and run the speed up and down quickly. If it doesn't tolerate this, then I would remove the main jet and check the acceleration holes. If it will quickly respond to throttle movements without a problem, I would then check the intake/exhaust manifold for internal leaks by backing off the tappets to close the valves and pressurizing the intake side. If there is a noticeable hiss in the exhaust side, then you have found your problem.
 
Sometimes a weak spark mimics a lean mixture. My SC carb sweats until it's warmed up even on warm summer days and in the winter it's pure white frost. It's the nature of the beast.
 
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