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What caues a lawn boy mover to burn a lot of fuel

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If the airbreather filter is dirty it will use more fuel than normal.

Posted on Jul 03, 2009


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I have a lot of blue smoke(burning oil). What could be the cause

misture is not right most call for 40;1 or 50;1 thats a small bottle of mix to a gallon pour gas and remix

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Toro push mover starts then quits

Looks like a fuel problem. Remove fuel line from carb., should get fuel.

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Tecumseh 13hp overhead valve snowblower engine starts fine than sputters and dies, replaced the carb with new and exact same symptoms, Lots of fuel at the carb.

Make sure the fuel is good. Ethanol laced fuel starts to varnish after 20 days and is no good by 30 days, it also attracts water. Be sure you have good fresh fuel, then try a new spark plug.

Oct 19, 2012 | Tecumseh Lawn Boy Push Mowers Insight...

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What Oil so I Need for a Toro lawn mover 6.75 HP ?

I think you are talking about a Toro pushmower with a 6.75 Briggs motor on it. If so; it is a four stroke motor and requires 10w-30 motor oil.
If it has a dipstick then its a 4-stroke. If there is no way to add oil to the crankcase and no way to check the oil level then its a 2-stroke ( ie. lawn boy and some really old snapper pushmowers)

Oct 06, 2012 | Garden

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Brute 650

you need to replace the needle and seat as the fuel we burn now damages the rubber so it doesn't seal

Aug 27, 2012 | Briggs & Stratton Lawn-Boy Insight Series...

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I started my lawn boy mower model 10642C near the cage part on the side it started to smoke and smell like something was burning.

This is the exhaust port. If you over primed it before starting, it will smoke and smell like burning oil.

I have the same one and I've done that before.
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Aug 24, 2011 | Briggs & Stratton Lawn-Boy 10640 20-Inch...

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Lots of smoke and oil comming out the exaust . only 1 and a half year old

Has fuel with oil accidentally been mixed to the fuel for this mower? We have had mix oil accident get added it to this lawn mower and it will smoke a lot with 2 cycle oil.

Unless you are certain no oil is mixed with the fuel I would drain and clean the fuel system.
Replaced the spark plug with the new and replace the air filter In addition ensure you do and oil change every 30 hours using a high grade 30 wt oil to include make sure it is not over full.

Hope this tip helps.


Feb 06, 2010 | Briggs & Stratton Lawn-Boy 10640 20-Inch...

1 Answer

Flooding and missing firing in engine

Sounds like you have multiple problems.
First fix the fuel problem- rebuild the carb including new needle and seat.
Hopefully that cures everything but if it still runs for a while then misses and dies I would suspect the module.
spark plug gap is .025-.030

Nov 29, 2009 | Troy Garden

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