choke question. 3.5 hp briggs

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Old 05-17-05, 02:16 PM
wayne141
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choke question. 3.5 hp briggs

hi, i have this older mower with a 3.5 horse briggs on it with the automatic choke. It was working fine. Yesterday I went to start it and the choke stays closed.I can move it freely with a screwdriver and it will start if i hold the choke open. how do i cure this problen, and how does it know when to open? thanx.
 
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Old 05-18-05, 12:59 AM
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You'll need to replace the carb diaphragm. It opens the choke when the engine starts because of the engine vacuum.
 
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Old 05-18-05, 03:12 PM
wayne141
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thanx cheese. i will do that
 
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