Question about Craftsman 21 Hp 42" Deck, Ys 4500 Lawn Tractor
I have an 18 HP Craftsman tractor that will not start. The B&S engine cranks, but freewheels w/o starting the engine. The engine seems to spin extremely fast, and the engine pulley spins as intended. It was worked fine one day and the next day would not start. The battery, air filter, and spark plug were all checked. Thank you, Rick
It sounds like you lost compression take out the spark plug and screw in a compression tester to check for engine pressure there should be 70 - 90 psi, if you can't buy one put you thumb over the spark plug hole and have a assistant crank over the engine push on the hole pretty hard, be careful not to get a shock from the spark plug wire while cranking the motor, if you feel pressure with your thumb reinstall the plug and connect the spark plug wire proceed to remove the air cleaner and pour a small amount (1 o.z ) of gas into the carburetor hole then try to start if it starts then stalls it is a fuel delivery issue. unscrew the carb float bowl to clear out any water or debree from it. the float bowl is round and is located on the under side of the carb, it should un screw by wraping a rag around it and turning it counter clockwise with a strong hand. also try cranking over the motor with your hand over the carb intake hole this will force any debree to get cleared out of the tiny passages in carb without having to full disassemble the carb this may also get the motor started for you if it starts remove your hand to allow the motor to breath and start/run.
Posted on Jul 16, 2009
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Posted on Jan 02, 2017
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