Posted by B-maniac on October 11, 2013 at 18:38:14 from (75.133.247.174):
In Reply to: Need A Game Plan. posted by Bryce Frazier on October 10, 2013 at 18:28:50:
All good advise. There are some "quick" ways of making the tractor self diagnose . You need 3 things, compression , fuel and spark. Roll it over a few times to splash some oil on the cylinders. Check compression. If good then take air filter boot off at carb. Using squirt bottle spray in some fuel while someone rolls it over. If it starts then you have a fuel delivery problem. If not and it don't even fire then do the points. Just sand them and gap them for this test. Make sure you have voltage at the coil. Still don't fire then condenser and wires/plugs if they show age. Don't over think it. That tractor probably ran good...until it didn't at all. Probably something simple. My brother had a JD 520 that ran perfect but less than a year later it wouldn't even start. He was going to buy rebuilt carb, then new oil pressure shutoff sediment bulb and wiring harness etc,etc. Talked him out of all of it on phone ( St. Louis to MI). Told him to spray fuel into carb, didn't change a thing, said then it ain't the carb, just saved ya $400! Told him get a condenser ($10) he did and took right off and run perfect again. Carb, wiring harness and fancy fuel sediment bulb/valve = $550 + and still would not have started. Think simple.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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