Simplicity Riding Mower Low Power Bogs / Dies Under A Load Smells Like Fuel Diagnosis and Repair

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We check out, diagnose and repair this riding mower with Briggs & Stratton Vanguard engine that is running but has no power. We fix a no spark issue on this Simplicity mower.
We often see black smoke, fuel smell or bogging / dying under a load as symptoms of this issue elsewhere. Sometimes you can just tell something is not quite right.
Wire assembly 844547 can be purchased at amzn.to/47fGZzl
Spark plug 491055T can be purchased at amzn.to/3RFzzzk
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#simplicity #vanguard #briggsandstratton #nopower #smallenginerepair #smallbusiness #individualizedrepair
About Us:
My name is Martin. I have been repairing tools and small engines for almost 20 years. We operate a small engine repair shop in Illinois. We service / repair Briggs & Stratton, Kohler, Kawasaki, John Deere, Cub Cadet, Toro Tecumseh, Loncin, Honda, Craftsman, Husqvarna, MTD, Troy Bilt, Simplicity, John Deere, Exmark, LCT, Generac and many more brands. We work on riding mowers, walk behind mowers, snow blowers, zero turns, generators, pressure washers and much more. We normally repair about 3,000 pieces of equipment every year and look at many more that are beyond an affordable repair. Hopefully our videos will save you some money and give you the information you need to work on your own equipment or figure out the issue at hand.
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Please be careful when repairing any piece of equipment and follow all possible safety measures. This video is for entertainment purposes only.

[@philliphall5198]

I bought the yellow checker and you are right, it’s a great tool Thank You 🙏 We little old retired diesel mechanic has learned a lot from You and your videos Thanks a million 😊

[@IndRepair]

It's a time saver! Glad your are enjoying it

[@glennplungis5743]

That's great info! I never would have suspected a wiring issue.

[@IndRepair]

I was sure we had a bad coil or bent push rod at the begging but this one was that pesky kill wire!

[@buffalobluecheese]

Excellent video!! I was guessing coil all the way... I'm well versed in older B&S opposed twins & single cylinder stuff, single barrel carb engines. Started watching your channel because you clearly know what you're doing with the twin cylinders, zero turns & not just fire a parts cannon at them. Really appreciate the videos, great explanations & knowledge you're sharing. Great content 👍

[@IndRepair]

I appreciate the words of encouragement and you watching! I am always happy to help!

[@philliphall5198]

Set off hood is the best thing with mowers in years 😊

[@IndRepair]

Definitely a lot better than the ones you have to take 32 bolts out of ha!

[@bobhaddock957]

GREAT VIDEOS.....RIGHT UP THERE WITH DONNY BOY

[@IndRepair]

That is sure a compliment there. Thank you for watching and for your support!

[@philliphall5198]

I think it’s a match between them 😊😊😊

[@crisprtalk6963]

This thing sounds great on one cylinder!

[@IndRepair]

It sounded amazing but you could definitely smell the unburnt fuel. Thanks for watching!

[@bobbybrown8926]

do all twin cylinders have diode in wire or is that earlier models. love the videos very informative.

[@IndRepair]

Many of the Briggs and others do, they are still being made and sold this way. Some have diodes in other electrical areas also (Simplicity comes to mind off top). Thanks for watching!

[@james35546]

This video helped me with my issue. Thank you!

[@IndRepair]

Glad to help! Thanks for watching!

[@rickbroerman9267]

I really appreciate your videos!!!! They are awesome!!!

[@IndRepair]

I appreciate that! Thanks for watching!

[@prostreetgsxr]

I bought a brand new 44 cubic inch Intek v-twin years ago. Sounded great at idle, but noticed when I would kick the blades on the RPMs would drop too low so I knew something was wrong. Brand new engine, running on one cylinder because of the wire with the diode was bad. I never really understood the purpose of that wire because it runs just fine without it. Another time I bought a used White riding mower with a Vanguard V-twin that ran on one cylinder. It had a two barrel carburetor, and one side of the carburetor was clogged.

[@IndRepair]

It is definitely a common issue! Thanks for watching!

[@steveriggenbach90]

Great video. Is there a primary side to the diodes? I use a test spark and ground it. I bend the ground electrode out. Not as easy as your clip on, but never have failed me.

[@IndRepair]

The terminal that has a small silver ring around it is the negative and the black side is the positive

[@steveriggenbach90]

@@IndRepair thank you. Good time to do some retraining. I don’t remember why it’s necessary to have that. That’ll a couple reasons I watch your videos. I learn but also remember. Thanks again

[@georgiabandit1321]

Thanks for video I have a twin 24 hp this thing about to run me crazy lol . Once it's cranks it will crank every time. But when you first go to crank it. It want crank. You can put gas on a rag hold it up to the breather it cranks right away. I checked the fuel pump showing good. What would be your take on this.

[@Old600Rusty]

I would replace solenoid and make sure you have tight clean battery connections.

[@IndRepair]

Sounds like the choke is not fully closing or the fuel is bad

[@georgiabandit1321]

@@IndRepair thanks I will check that out.

[@georgiabandit1321]

Thanks for the info on the choke that's what it was 👍.

[@IndRepair]

Awesome! Great job!

[@Old600Rusty]

How did you know it wasn't the coil grounding because of a bad safety switch?

[@IndRepair]

Because the other side was sparking ok. If it was grounding out neither will spark

[@shaneparnell2128]

Cant believe anyone would buy a piece of equipment with a Briggs engine.

[@IndRepair]

Vanguard line was pretty solid. What do you prefer?

[@shaneparnell2128]

@@IndRepair Kawasaki. Some guys that work for me have vanguards on their personal mowers and they've had trouble with them leaking and using oil.

[@IndRepair]

Usually don't see that too much on these, mowing ditches and bad hills I see them use oil and normal gasket/seal failures but wouldn't say anything out of the ordinary. I prefer a Kawasaki also but have a vanguard on my Simplicity and it has been a work horse. I have less than 1/2 acre of flat land so it doesn't get a whole lot of use. Thanks for watching!