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There are push to start circuits used for motors and then there are holding circuits that keep the unit running. This way the dryer stops if the circuit is open due to high temperature or end of the cycle. It seems as if the holding circuit (could be a rotary switch that stays closed while the dryer is running) or a holding circuit relay (stays closed until circuit is broken by the control) has failed.
To lock the choke on:- 1. depress dead mans trigget on top of back handle 2. squeeze throttle trigger fully in. 3. slide on switch fully down to 'full choke' position. 'it should stay there'. 4. Pull saw over until it fires once. 5. click 'on' switch up one position to 'half choke' 6. pull saw over again, saw should start running and be revving high. 7. 'blip' throttle, saw should stop revving and run on tick over.
Your powermatic band saw has a Magnetic motor starter. Since it is hard to find parts for the 143 you can remove the power and take the starter apart and clean the contacts. If that fails you can take it off and take it to a Electrical Supply Store and have them match you up with one that will work.
The way the switch works is when you push the on button it picks a relay that starts the motor and also has a contact the holds the relay picked. when you push the stop button it drops the circuit.
This is a safety feature to prevent the motor from restarting after a power failure until you hit the button
Hope this answers all your questions Please remember to Rate/vote for any solution that helps you out. Thanks for using Fixya.
Is this a direct drive or belt drive saw? If belt drive, you can remove the belt and try spinning the motor by hand then turn it on. Sometimes they can get stopped in a dead spot. Do not get your hands/fingers in the way when turning it on. You may need all of them someday.
this confuses me. What do you mean it starts backwards? How do you know it is running backwards? how long have you had this tool? I am confused because it is a table saw. The motor should drive the blade in the direction the teeth are facing. Meaning the poity part of the blade is where the wood is to star its cut. If this is not the case, you either have the blade in backwards, or your standing on the wrong side of the saw. good luck.
check the spark plug sounds like you gotta fouled plug if that dont work get some carb cleaner and spray the carb out and check the air filter under the seat
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