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Model 139.536006 I have a 1988 model and had the same problem as pk5353 after replacing the sprocket assembly/worm drive. It would spin a few seconds and shut off while the limit assembly was no where near the contacts for the upper and lower limits. (I disconnected the chain to remove stress and left the back off so I could watch the limit assembly move back and forth.) My sprocket assembly kit cam with the collar with the two allen screws but I did not install it since my original model did not have it (like pk5353). I replaced the black cap and it appears secure but the motor keeps shutting on and off. Should I try putting the collar on? Any other speculation?

Posted by AJC73 on May 15, 2008

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We did not find results for: model 139 536006 i have a 1988 model and had the same problem as pk5353 after replacing the sprocket assembly worm drive it would spin a few seconds and shut off while the limit assembly was no where near the contacts for the upper and lower limits i disconnected the chain to remove stress and left the back off so i could watch the limit assembly move back and forth my sprocket assembly kit cam with the collar with the two allen screws but i did not install it since my original model did not have it like pk5353 i replaced the black cap and it appears secure but the motor keeps shutting on and off should i try putting the collar on any other speculation.

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