Question about Briggs & Stratton Lawn-Boy 10640 20-Inch 6.5 HP Gas Powered Lawn Mower
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.
Posted on Feb 06, 2010
I have a 16.5 hp briggs and station recently when i first start in gas shoots out exhaust after its running its fine.got me puzzled
Posted on Jun 21, 2010
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Posted on Jan 02, 2017
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