Lawn Boy trouble


Old 05-07-09, 05:10 PM
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Join Date: Oct 2008
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Lawn Boy trouble

I have a Lawn Boy model 8073 self propelled lawn mower. Last week I put new gas/oil mix into it. I started it and it worked fine for a awhile. Now whenever I start it, thick blue smoke comes out of the exhaust. In addition, when I put the throttle to full, the engine does not run at full. The engine tends to fluctuate. If I could have someone tell me what is wrong and what I need to do, that would be much appreciated.
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Old 05-07-09, 05:15 PM
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Sounds like the choke is on.

If the oil you used was a good grade of two stroke oil mixed properly, I doubt if that has anything to do with it.
Old 05-07-09, 05:46 PM
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thanks for the tip, but the choke was not engaged. if it helps any the smoke seemed oily
Old 05-07-09, 07:15 PM
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Location: Central Texas
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Old gas can cause this, a dirty air filter and a partially plugged exhaust could also result in low power and excessive smoke.

What type of oil are you using and what is the mix ratio??
Old 05-11-09, 04:36 PM
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im using small engine oil from Ace Hardware and the mix ratio is 32:1
Old 05-11-09, 08:36 PM
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You should be running 50:1 mix. 32:1 is a bit heavy.

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