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my 240 had a problem with the idle sticking high intermittantly then it got very ratty (missing, popping.... carb cleaner to the butterfly, cleaned the air cleaner, & changed the fire trap & it's a lot better but the intermittant high idle persisted. today isolated to the butterfly flap screws were loose & the butterfly plate hanging up. tightened the plate up but nowe it stumbles when you accelerate.
any ideas??(I tried adjusting the plate from fully closed to a little open & it's not better...
TKS,
garyS
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