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028 carb issues

motorhead99999

motorhead99999

Jeepin tree man
Joined
Oct 2, 2019
Messages
705
Age
28
Location
Sharon springs ny
aquired a 028 eq wood boss that was straight gassed. I put a 028 super top on that I had. Not sure what brand it is. Anyways it passed vac and pressure test but I’ll set the carb so it 4 strokes out of the cut but after a couple minutes of cutting it acts like it’s running lean. I also changed fuel lines and filter when I rebuilt it. Is it possible that the adjustment screws are vibrating in? Seems like if they did anything they would go out. I also left out the base gasket because squish was a little thick.
What’s your guys thoughts
 
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albert

albert

Addicted to ArboristSite
Joined
Feb 7, 2008
Messages
1,514
Location
s.e pa.
The fuel tank vent is probably clogged.
That style vent has burned up more of those saw than I can remember. Old hose and gummed fuel stop them up.
 
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