Question about Briggs & Stratton Garden

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B&S 20hp OHV V Twin backfiring when hot - Briggs & Stratton Garden

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Briggs and Statton OHV engines require periodic valve lash adjustment. 0.006" for both exhaust and intake is sufficient.

Posted on May 27, 2019

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ONE MIGHT SUSPECT VALVE CLEARANCES OR TIMING

Posted on May 27, 2019

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SOURCE:

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Posted on Jan 02, 2017

  • 72 Answers

SOURCE: Yard Machine 20HP TWIN runs but when you take off choke it Dies!

remove carb and clean the main fueljet
it is gummed up due to set to long with
gas in it.

Posted on Aug 04, 2009

mickey813
  • 472 Answers

SOURCE: 27 hp kohler v-twin ohv backfires, and @

SOUNDS LIKE IT HAS BAD GAS AND THE VALVES NEED RE SET YOU MAY WANT TO FLUSH YOUR FULE AND CLEAN OUT THE CARB LET ME KNOW IF THIS HELPS

Posted on Oct 08, 2009

  • 10 Answers

SOURCE: we have 42'' Yard Man riding lawn mower need to how to change oil

it's a square head pipe plug @ base of eng. either right or left side of machine may also have a quik change fitting instead its black plastic w/ yellow cap

Posted on Apr 12, 2010

Testimonial: "Thanks for the info, you where right on the money.. I finally found it, its on the right side if you were sitting on mower. Thanks again!"

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SOURCE: Why won'y my 20hp Craftsman Yard Machine riding mower start?

when changing the belt you might have knocked off a wire to a safety switch

Posted on Apr 18, 2012

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1 Answer

What are the valve clearence settings for intake and exhaust on 20hp b/s #461707


.004"-.006" on intake and exhaust valves cold engine. I would set them at .005" .

Feb 16, 2017 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

I have an estate 2005 20hp ohv I/c v-twin model number 13AG618G706. It starts and runs fine until I Engage the blades. Once I do that it'll run fine at a really slow pace. If I hardly press on the...


carb carb carb rebuild rebuild rebuild but as always check spark and compressin on both sides if you only have spark on one side it will sound fine untill under load

Jul 12, 2012 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Why won'y my 20hp Craftsman Yard Machine riding mower start?


when changing the belt you might have knocked off a wire to a safety switch

Apr 17, 2012 | Yard Machines Garden

1 Answer

Have a 20hp vanguard on a go-devil long tail motor. engin runs at idle speed then when i put the propeller into the water it stalls. if i pull the choke and give full throttle it will run some and backfire


These engines seem to have problems maintaining the correct valve lash settings. try taking the valve covers off and checking the valve/pushrod clearance.on tdc compression stroke it should be .001-.003 clearance. then check exhaust stroke tdc on exhaust stroke. clearance should be same on the other valve then. hope this cures your problem.

Dec 22, 2009 | Briggs & Stratton Briggs Stratton Intek V...

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