Like the title says my Stihl hedge trimmers are over revving bad. Any ideas what causes this?
109583
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Look, yer issue is not with the gas/oil mix. I too usually replace a customers fuel with my own shop mix, just a good brand of oil and usually mid grade gas. No hi-test.
More than likely ya gots carb problems. Sometimes dirt will migrate into the HS passages causing a lean condition, resulting in high revs. Try this: while warmed up and revving, slam the choke shut 'till it just about dies, then open choke and let it recover. Do this a few times. Sometimes it helps to clear out the circuits, sometimes not. As others have said, it could just be the HS needle needs tweekin'. Could also be a loose carb/air leak.
Have fun.
More than likely ya gots carb problems. Sometimes dirt will migrate into the HS passages causing a lean condition, resulting in high revs. Try this: while warmed up and revving, slam the choke shut 'till it just about dies, then open choke and let it recover. Do this a few times. Sometimes it helps to clear out the circuits, sometimes not. As others have said, it could just be the HS needle needs tweekin'. Could also be a loose carb/air leak.
Have fun.
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6,494 Posts
Yer right.
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6,494 Posts
Huh ??? Sumpin' ain't right there. Usually carbon buildup in the exh. port prevents it from revving up normally.
That's a new one on me.
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