Question about Oregon Scientific Oregon Fusion Blade For 42-Inch Murray Lawn Mowers #497-019

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Lawn mower carburetor

How do you clean a lawn mower carburetor?

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  • clueless 2 Feb 04, 2009

    Toro RWD, model 20017, think 5.5hp

  • clueless 2 Feb 04, 2009

    Toro RWD, model 20017, think 5.5hp

  • clueless 2 Feb 04, 2009

    Sounds easier to buy new carburetor. What ya think?

  • alcu May 15, 2009

    how do I clean a B&S carburator on my 22" toro self-propell model 20041?

    after reading several posts, I think I may need to clean the car. I removed mower from storing 2 years, and now it starts after 3 tries, and stops. couple more primes and it stays on for about 3/4 minutes, then dies. turns on again and when about to die I prime it and it revies and stays on for another 5/6 minutes. cleaned the air filter. When I stored it I ran it dry until no more gas, and unplugged the spark plug, but never added stabilizer to gas or oil to spark plug port.

    next steps other than new spark plug, oil change, air filter?

  • Anonymous Mar 12, 2014

    lawn mower won't start after priming,



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It is a tecumseh , remove screws from intake pipe to block
mark holes for linkage don't stretch springs.
Remove bottom bowl nut it is reg thread so turn counter clock wise . parts needed 631021b bowl gasket and needle and seat,
36786 intake gasket,
632547 2 o rings,
36905 air filter .
Use a can of carb cleaner auto zone spray all holes even the one
on the bowl nut , take out center plastic main nozzle out put on the new o rings put back in , some time the nozzle will brake part 3 640019 .
Remove seat can use comp air or make tool out of paper clip don't
scratch the side when pulling out
Good luck

Posted on Feb 04, 2009

  • dr1plain Feb 04, 2009

    new carb 640350 = 68.94

    a boared toro dealer : ) its slow today


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My B&S Lawn mower model 12H802-2677 was hard to start, rebuilt (new kit) the carburetor. Now it starts easy but want go to fast speed.

Posted on Dec 16, 2013

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I have a husquarna lawn mower from lowes. I t just won"t start. Replaced filter and spark plug but still no results.

Posted on Apr 04, 2012

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Neal, If lawn mower does not start after running out of gas, change fuel filter if equipped, chances are the carburetor has gotten clogged with sediment/dirt from bottom of tank. Remove carb. and disassemble, clean/rebuild. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Hi Blair, The link below is a youtube video showing how to clean your toro lawn mower carby, Also there's video's down the right side of the link that will help as well............CHEERS..
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I have a John Deere JS30 self propelled lawn mower I had issues with it running for 15 minutes and then it stops running. Was low on oil. Added oil over the full line now it runs for 3 min and dies

Wayne, correct your oil level to full line, change your spark plug and try mower. If still acting up after a couple minutes, the Gas cap vent may be plugged, remove or loosen cap to see if mower will run longer and better. If no improvement, the carburetor is dirty and needs cleaned or rebuilt.
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Should be dirt or sediment in the carburetor. You will be needing tho have the carburetor cleaned. Mowers need to be run for a while every few months (at the least) to prevent gas spoiling.

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1 Answer

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1 Answer

Have a mower that was left out all winter so the gas is bad. mower starts but wont stay running, changed the gas and cleaned the carb a little but still same result

The trick to cleaning the carburetor is to use a carburetor cleaner and wire out the main tube or emulsion tube that feeds fuel to the engine. I always recommend putting a carburetor kit into the engine for safety.

Contact a company like and make sure a briggs and stratton part # 498260 will fit your machine and have it shipped asap to get the job done. Good luck

Mar 27, 2011 | Toro Lawnmower 20099 Mower Mowers Lawn

1 Answer

Bilt 5.5hp Self Propelled Mower: Lawn mower will not stay running...

Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please do not forget to rate me, Thanks
Good Luck, I hope this help

May 18, 2010 | Troy Bilt 5.5hp Self Propelled Mower

1 Answer

My mower wont stay on for more than 2 seconds after starting. Help!!

Remove the float bowl from the carburetor and clean it as well as the main jet up in the center of where the bowl nut screws in using an areosol carburetor cleaner

Sep 19, 2009 | Briggs & Stratton Lawn-Boy Insight Series...

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