Blow Out


Old 08-11-05, 05:29 AM
Old Geezer
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Blow Out

My neighbors craftsman chipper/shredder, 5hp Tecumseh, quit while he was using it, we found the screw from the carburator choke plate was missing. I asked if he had found the old screw, we put in a NEW screw, and pulled the starter cord very slowly to see that the old screw wasn`t in the cylinder. Well after starting the motor it builds up to a high RPM for about 30 seconds, but kicks out and gas come blowing out the choke opening, I`m afraid the old screw must have gotten sucked in when the problem first occured, you think there is ring damage? whats your thought on this?
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Old 08-11-05, 11:18 AM
repair_guy's Avatar
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Join Date: Apr 2004
Location: Marion,Al.
Posts: 539
I've seen this problen many,many times.If your engine done what I think it did,it's a wonder it will even run for long.The missing chock plate screw is prob.stuck in the intake valve,hohding it open.CURE-Take the screw out,make sure it didn't scar the valve face or the valve seat,or bend the valve. It it did a simple valve job is in order.The engine should be fine

Good Luck
Old 08-12-05, 03:45 AM
Old Geezer
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Thank so very much, we will look into the screw in the intake valve advice. When it rains it weed wacker is acting up, but that will be a later post, thank you again.
Old 08-12-05, 06:27 PM
Join Date: Oct 2004
Location: USA
Posts: 255
Tecumseh carbs require throttle/choke flap screws that have a dry adhesive coating. If you replace them make sure you have the correct screws from Tecumseh with this adhesive or else they will losen.

God Bless,

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