MS440 high rev then dies

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The Snowman

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Joined
Sep 15, 2024
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Location
Washington
Newb,
Original owner of a MS440 thats 23 yrs old. Light duty, firewood mostly.
Was dying after a minute of idling before I messed with it. Got all the vibration bushings so I figured I'd take it apart, clean everything and replace those.
Well, got stuff clean, back together, had starting issues. Eventually flooded to where I couldn't pull it. Pulled plug and gas dumped out cylinder. Ordered walbro carb rebuild, cleaned and replaced gaskets/diaphragm.
Now itll start, idle sometimes. When you get that high rev from half choke it spins up then dies, or if you get to idle and feather up to high rev that kills it.
Did I miss something?
Oh yeah, took apart and cleaned tank vent too.
Carb is set to factory settings on side cover: L 1/4, H 3/4.
Not sure what I screwed up.
 

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