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Old 04-12-2004, 10:08 PM
trentmh trentmh is offline
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Join Date: Apr 2004
Location: Nashville, TN
Posts: 10
Advise on star wheel on Lawn-boy mower

I've been reading some posts here that reference the plastic star wheel on top of the carb on Lawn-boy push mowers and how to turn it clockwise to increase performance. I have a Lawn-boy model 8480 (got a new 10550 on order as well) and I did exactly that and my mower and the RPM's of the mower certainly appeared to increase. I'm not a mechanic, but I would like to know exactly what is being done when this wheel is adjusted. I'm guessing it's increasing the air flow/fuel mixture, but I'm not sure. Also, is there any danger of damaging the engine by doing this?
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Old 04-12-2004, 10:28 PM
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imograss imograss is offline
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Join Date: Feb 2003
Location: Nashville Tn.
Posts: 796
That is my guess but not sure. I have adjusted both my LB's this way without any probs.
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Old 04-13-2004, 04:11 AM
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vipermanz vipermanz is offline
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Join Date: Mar 2001
Location: Birmingham Alabama
Posts: 1,780
what it does is increase the tension on the air vane spring, the more tension on it the more airflow required to move the vane enough to slow it down
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