My lawnboy mower leaking gas - Briggs & Stratton Lawn-Boy 10642 20-Inch 6.5 HP Gas Powered Variable Speed

Clean the carburetor, line, and fuel tank with Gunk engine cleaner. Check for broken or damaged tank or fuel line, loose hose clamp, loose carburetor, or carburetor sediment bowl. You may need a new carburetor gasket.
Hope that this is helpful

wherever it runs the best.

it should say on it somewhere. 50 to 1 should be your mixture

ask qustion again be specific is rear drive not working let me no

check carb to see if it is dirty or has watter inside carb if does rebuild it start lawn mower

Hi, there should not be fluid in the float and it will need to be replaced. Regards Phil.

http://www.briggsandstratton.com/maint_repair/manual_and_more/

Save this is your computer. Lots of info here.

I would try and remove carb and clean it thuroughly. You can soak the parts in solvent or equivelant. The carb would be right after the air filter tube to the intake of engine.

It sounds like it is 2 stroke.
Carefully remove the carb bowl, by undoing the brass bolt.
Examine the brass bolt for a small pin-hole in the side.
Use a piece of corn-broom NEVER anything else !!! and poke the hole(S) to make sure they are clear.
Blow out with air if available.
You can use this method to clean out all the carb orifices carefully.

Hope it helps,

Andy.

20:1 gas to oil is a good place to start. Some mowers thin down to 80:1. If you can tell me the model of the mower I can be more specific, but starting at 20:1 will assure you have adequate protection for the engine. If it's exhausting lots of oil smoke after it has warmed up; you can cut back a little each time until you have minor oil smoke.

at 20:1 you need to add 6.4 ounces of oil to one gallon of gas.

Here's a nifty calculator for various ratios:

http://www.csgnetwork.com/oilfuelcalc.html

Enter 1 gallon of gas, then change the ratio number and then press calculate and the number of ounces per gallon will be displayed.