Posted by The tractor vet on November 22, 2019 at 08:44:12 from (104.179.81.68):
In Reply to: Carb question posted by DeanAllen on November 22, 2019 at 07:59:06:
INHO on this is ya need to do a major tune up , start off with a valve adjustment as they are over looked by the younger set thee days . Old engines used solid lifer/ cam followers and require adjustment when used . When they were the prom pony power a major tune up was usually done once a year . Next make sure your manifold bolts/ nuts are tight . Next on the list is the usual plugs and points and check the dist shaft for side to side movement . Then put a timing light on it and set the timing as per MFG spec.'s . Now comes the fine art of adjust the carb . Ya start off with a base line set then you fine tune the ideal for best slow speed and set the curb ideal then ya set the main jet and setting that for best throttle response , max power with out over fueling . It also may require a carb rebuild and i dopn't mean taking it apart and usen a can of spray carb cleaner and a quick spray and blow dry either . When i rebuild a carb it gets taken apart and takes a bath in real cab cleaner usually over night then it is washed out in HOT soapy water then rinsed the blowen and rodded out with number drill bit and blowen out again and each passage is checked for flow . Floats are checked and hand leaned and polished to take off any tarnish as that adds weight and it may or may not change the wet set but this is how i have done it for way over fifty years and it works for me . I do a lot of carb rebuilds from old cars and trucks to lawn mowers garden tractors play toy carbs and tractor carbs .
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