I have a Briggs and straton lawnmower that runs rough, is there a filter I should change? can I buy parts?

Question

I did leave in the rain for a day, a way to remove water?

Answer 1

You could check the fuel filter and check the sparkplug. See if you can get an owner's manual. If you know the brand and model check on line. When did you change the oil last? Siphon the gas out and change it as well.

Answer 2

wd40 will help remove water. has it always ran rough, or for awhile. you may want to change the gas. if this does not help, you should clean the carbourator. drain the fuel and gain access to the carb. take the bowl off of the bottom, there is a large brass bolt under the bowl to do this. use Q-tips and wd40 to blast out and clean the holes in the bolt, use fresh engine oil to clean any gas residue from the bottom of the bowl. it has to be an oil because thin stuff will not break it down. use the straw on the wd40 to blast out any little holes and ports in the carb that you can find. there should be a small pin under the needle valve(near the gas inlet, part of the hinge for the float)that alows you to take the float off. DO NOT DAMAGE THE FLOAT they are usualy plastic and if you damage it you will almost certainly have to replace it. take the needle valve out and clean it. use a piece of wire to clean out the gasket. put it all back together and see how it runs now.
this problem is usualy caused by leaving fuel in your mower for too long.

AND NO! IT IS NOT A SPARK PLUG!!! every time something happens to someones mower they automaticly think it is the plug. those plugs will last for at least 7 years under normal use. if the bent part across the top isnt burnt away from the sparks, and it is not seriosly burned(black carbon residue doesnt count!) then it is fine. if anything, check the spark gap and use a wire brush or some fine sand paper to clean it up a little.

Answer 3

Change the air filter first. If it gets dirty the engine can not get air and will run rough. If it was wet it will also not let air through very well. Next make sure there is no water in the gas. Again will not run well with water in the gas. These should do the trick. Be careful about letting the air filter plug. The B & S engines will suck air through the oil and suck the oil into the engine if it becomes plugged. Soon no oil and the engine will blow up. Did that, then bought a new mower.

Answer 4

Try it quickly (do not use it like this) but run it quickly without the air filter... 2 or 3 minutes tops to see if any change is noticeable... water can and will close up a paper air filter element.... choking the engine out/making it run rough.
Water in the gas? pour 91% (pretty much the purest) isopropyl alcohol (clear) into the gas..... this will suck all the water up..

wd-40 is a water displacer, not water remover.

Answer 5

If the engine quickens and slows down, it is generally stated as looking and can be via a lean mixture (too little gasoline). you could attempt making the mixture richer with the aid of turning the screw which adjusts the jet clockwise. additionally examine the governor vane isn't sticking and linkages/springs are not bent or slack. The engine probable has a pump and weir kind carburettor gadget quite than a drift bowl. make certain there is no debris interior the little reservoir that can replace into suspended in gasoline via vibration whilst the engine is working and clog the intake filter out on the tube offering the carburettor.

Answer 6

Sounds like you have several problems. Contact Briggs and Straton and ask them. Best to get it from "the horse's mouth."

Answer 7

drain the gas it may have some water in it get new spark plug and replace

Answer 8

the blade may need balanced