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Two things to check the next time it happens. As soon as you feel it starts to quit open the gas cap. If it continues to run, your gas cap is bad, vent plugged, and needs to be replaced. If this is not the problem, purchase an inline spark tester, and check for spark as soon as it quits. No...

Here is how to test relays. To test a lawn tractor relay, you'll need a multimeter and a 12V power source, like a fully charged battery. First, identify the relay's terminals: typically, terminals 85 and 86 are for the coil, and 30 and 87 are for the switch. Apply power to the coil terminals (85...

Was the procedure I posted too difficult for you? If so I’ll try to find one that is a little easier to understand in my files.

I’ve seen it many times that a belt which is the wrong size, too long or short, wrong angle, cause problems which I would not expect. That’s the reason why I always use OEM belts unless I have no other choice. Yes, I’ve seen OEM belt that are the wrong size.

Glad you found the problem. Sometimes it the simple things that drive you crazy.

Belt number should be Ariens 21547188 V-Belt. Your belt may not have the same angle, which is riding to low in the pulleys.. Also check to see if the pulleys are in good condition and the tensioner arm is moving freely.

This site does not have your engine, but the gaskets and carb are the same. Carb part number is 60730 and I think the two gaskets you need are part numbers 36182 and 36183. Hope this is of some help. https://www.partstree.com/models/ult50-500032d-tecumseh-engine/engine-parts-list-vlv40-0/

This manual should answer all your questions. Page 10.6 has the torque specs. https://mymowerparts.com/pdf/Kohler-Service-and-Repair-Manuals/Kohler-Service-Repair-Manual-Courage-SV470-SV480-SV530-SV540-SV590-SV600.pdf

BBill, get your act together. There are two different numbers because you said you need both belts so MParr gave you numbers for each belt. My suggestion is if you don’t understand this, don’t try to change either belt. Might be in over your head.

Since I’m not standing next to you, looking at the unit, it will be very difficult to say what belt length you need. Yes, belts are expensive, but you don’t want to buy a cheaper belt with the wrong angle. As stated, your best bet is to contact a servicing dealer or contact Big Dog directly...

Jack up the rear end and see if the wheels turn at all. Also, remove the belt from the tranny pulley and see if anything moves when turning the pulley. Check at different speeds. Check and see if the brake is frozen tight at the tranny.

Try this site. Searching with the little info you want to supply, as Auto Doc says, can be difficult. Hope I picked the right unit. https://documoto.digabit.com/ui/book/552685

Do you need deck belt or drive belt?

Here is a wiring diagram for your unit which may help you out. I’ve also attached a Briggs charging system service manual which may also help you. https://www.partstree.com/models/309029x92c-briggs-stratton-30-rear-engine-riding-mower-2004/electrical-system-1/...

Engine model should be a 12F802-0650-01. If it came to me I would pull the head and do a little diagnostic work. Check to see if the valves are closing properly, is there any slop when pushing the piston In different directions, how does the cylinder look, etc. if the cylinder looks in good...

Do you have any ideas how many different types of units Big Dog has produced? Not going to get much help unless you post model and serial numbers for your unit. Our ESP and crystal balls are very fuzzy due today’s climate. You must help us before we can help you.

Yes.

Wheels are not interchangeable. If the drive gear and wheel gear are in good condition, I suspect the the bearings are going. Need to replace three parts, bearing hoc, bearing and bushing. I’ve attached a site to look up the part numbers and a service manual for toro drive systems to help you...

As IL said, you need to use the one recommended by the manufacturer.

Because I’ve work at my own business and for other businesses, unless I have no other choice, I always purchase and use OEM parts. My bottom line and reputation are not worth trying to save a couple of bucks. Plus, it is far easier to make a warranty claim, if I do get a bad part.

As a retired instructor I’ve answered more questions than you’ve ever asked. My problem is with those who are so fixated on what they want, they disregard the answers they are given. You say you’re probably going to tear it down, why not remove the head and see if we are right, blown head...

Ok, don’t waste your time calling Briggs, probably a bad idea anyway. You came here asking for help and the symptoms you described would lead a good mechanic to start with a blown head gasket. Doc and I both are leading you to repair the engine, which would be far cheaper than replacing. You...

I would remove the carb and check that the float level is correct. Many times the needle will swell, causing a lean mixture. You will need to replace the float needle to correct this condition.

I would contact Briggs customer service and explain the problem. Only costs you a little time no matter what they say. Being a service tech for more than 35 years I’m pleasantly surprised at the answers I get more than once. Try this number, stay calm and explain everything you’ve done to...

First, if it is only two weeks out of warranty I would be going a GOOD authorized Briggs repair dealer and see if Briggs will authorize repair. To me it sounds like a blown head gasket, which will definitely rule out replacing the engine, but repairing the problem. Even if you have to repair...

Original Headlight assembly is Toro part number 116591. Might be able to find one if you have a small engine grave yard in your area.

That looks very similar to this one. Sorry I misunderstood your definition of OLD. I’ve forgotten more than I remember, so get confused very easily. Thankfully I’ve cut back drastically, due to recovering from a bout with sepsis, it’s some mean crap. NowI only do units when I know I can...

Not a bad design, just needs a bit more patience and understanding on how carbs work. They get a bad rap because people don’t have the patience or want to stick the time into properly cleaning and rebuilding. With a little searching there are some good videos on how to clean and rebuild them...

Started working on engines in the early 60’s. Briggs kick start, Maytag, hit-n-miss etc this site has come in handy more that once. With a little work you can still find or make parts for them. Four years ago I got a model N with reduction assemby going again. Really fun to work on, but you...

This is the one I have used for years when I come across an older BRIGGS. Sorry its not blue. https://mikeandjensoldengines.com/briggs-manuals/

Solid old engine, which I call a mule, just give it a little TLC and she’ll serve you well. I suggest you remove the carb and give it a good cleaning, plus replace the float needle and seat. Lawn Boy part number 92-9697. Here is a service manual with instructions, which will help you out...

You said you replaced the key switch, are you sure you used the proper switch? Many switches look alike, but you must check the terminals and make sure the old switch and the new switch have the terminals in the same location. They are labeled.

Logged in and out many times yesterday and this morning, no problems yet. Thank you for your help and due diligence in hopefully solving the problem.

Most times it will not load anything. Other times I will type in a reply, but it will not allow me to post it. I must quit the site, not log out, open new, reenter my material and try to post.

I think I’ve tried that in the past, to no avail. You must remember that many of us can fix most small engines, but are computer idiots, that’s me.

I don’t see any changes this morning. Took me 30 minutes of trying before it let me log in and forum is very slow. I appreciate all your efforts and can’t wait for you to resolve the problem. Good Luck.

Some Raptors do not use a starter relay and some do. Attached is a wiring diagram for Raptors. Might just have to trace the wires to locate the relay if it has one. https://documoto.digabit.com/ui/document/36428?q=939207

The model and spec numbers are probably stamped on the shroud, just above the spark plug or on the side. With those numbers we will be able to identify the primer bulb you need and a service manual for the engine. If you end up not being able to find the numbers, take a few pictures of your...

Please provide us with the model and serial numbers so we can see if it even has one.

Did you install the pump diaphragm and gasket in the proper order? Plus tighten the screws in the proper sequence? Section 3, page 9 of this manual will help you. http://www.tuks.nl/WFCProject/img/Engine_Carburator/81644210-Briggs-Stratton-Service-Manual-L-Head.pdf

Banging on a starter is not a good idea, you can do more harm than good. Might have to replace the starter. If you have a tech in your area, you could have him check it out, but if it’s bad you’ll have to pay for both for both check out and new starter.

The individual tabs on the back of the switch are labeled..

First thing that comes to mind, are you sure that your new key switch is identical to the old one? They may look the same, but you must check the tabs on the back are labeled the same. Most people don’t realize that they must check this. If they are the same see if this wiring diagram fits...

I guess I read this thread wrong, as I was assuming the OP was looking for trimmer brands, not line brands. Sorry about that. I use any off brand I can get at the local home improvement store, but I spray the line with a small amount of light lubricating oil after installing. The oil keeps...

Try this procedure which I use on my Echo. Put the choke on fully closed. Put the rope 2 or 3 times, until you hear it pop. Move choke to 1/2 position and pull the rope until it starts. This procedure eliminates flooding the engine.

Before bad mouthing anything, take it back and have the mechanic take a look at it. At a good repair shop and in a reasonable time periID, most good shops will replace a defective part under warranty. Wouldn’t be the first time I’ve run into defective parts.

Before doing anything more remove the key and bolt. Then take some medium/fine abrasive paper and polish the crankshaft until it is smooth and shiny. Wipe clean with an oily rag and the sump cover should slide right off.

This is the trimmer I recommend to anyone that asks. I bought this 8 years ago and have had absolutely no problems, and I’ve abused it. I don’t know if this model is still available, but Echo is the only way I will go. https://www.echo-usa.com/trimmers-brushcutters/srm-266

This service manual should answer all your questions. https://mymowerparts.com/pdf/Tecumseh-Service-and-Repair-Manuals/TECUMSEH-SERVICE--REPAIR-MANUAL-OHH50-65-OHHSK50-130-OHV11-OHV17-OVM120-OVRM40-675-OVRM120-OVXLC120-OVXL120-OVXL125-695244A.pdf

This service manual will explain how to adjust the governor. https://www.georgiaffa.org/docs/sidemodules/57817_Honda%20Repair%20Manual%20for%20GCV%20135-160-190%20&%20GSV%20190%20(1).pdf