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Sidewall pressures are NOT the max pressure the tire will stand without blowing up !!! They are the pressure that will give the max load capacity for the tire -esp on autos. Many small lawn tires say "inflate to 14 psi" and also say "When seating on rim do not exceed 40 PSI" Car tire...

Also make sure you are adjusting valves correctly. Your first post says. 005. That is incorrect for a 31xxxxx series. They set at intake: .003-.005 Exhaust: .005- .007 You want intake to be in the tighter side since that is the one that does the compression bump. Exhaust is...

What do you mean when you put new belt on and tested it.....it worked. Did you drive it around the yard without deck and then put the deck on and it stopped moving??

I see you got some coils that fit. It's pouring not the coils anyway but can be SAM but still unlikely. Also prob not the flywheel key as kohlers use a steel one and not soft aluminum like Briggs. It will prob be fine. Popping out intake is typically a valve or valvetrain issue and can also...

Sounds like you're installing the Jets the same way I do which is kind of hard to describe but if you're holding the carburetor and it's normal orientation you would be dropping them down the middle too. You just have to make sure that they go in properly and you seat them in the hole.. A lot of...

Where are you being this number. My first search from your model number the 966xxxxxxx one shows a 539120806 for hydro belt that is readily available.

Not a good test at all. Most do that and lots of blown head gaskets do no no worst. Never had one blow the strick out hard. Many will start to smoke if you open dipstick. Best test I have found (because comp tester etc should be left in toolbox for autos lol) is to get it warm and then go in...

Any and or all of this brand bashing is basically just personal biases. All mowers are basically just a combination of parts and the engine and transmission or hydros are the key ones. You only have a few options of engines available and some people pay more for Kawasaki but even those...

I have found the same to be true..so best is relative... As I said, in small push mowers even Hondas, I find NGK to be a little faster to start and maybe run a little smoother BUT they will stop working at any random time. Usually 2-4 years or more but it could be 2 weeks, 2 months etc. I HATE...

NGKs run great.... Until they don't. Lol I find plain old champions to last longer.

All true but the theory for a discussion like this is kind of flawed because I don't have the machine right in front of me. I will tell you how I would have troubleshooted it though. I would take that compression tester and put it back in the toolbox and leave it for good because they are a...

There's really no reason to turn the more completely on its side as a 45° angle or even less than that we'll get the job done and then you can simply rotate the wheel half turn around and pour some more on. It is true that the 50/50 acetone ATF mix has proven to be the best penetrating oil out...

Some people aren't here are just like me, they have a whole lot to say.. Unfortunately, and sometimes fortunately, most of it is true though. One thing about the Chinese stuff, I know people love to bash cheap Chinese parts and engines etc but it's not that they can't make good quality stuff...

I find it just takes time. That is your traditional MTD looking one that has the flat shaft on each side and round on the opposing sides with the bolt and washer that holds it on. They do tend to rust up badly if they're in a damp climate.. I typically use nothing any stronger or better than PB...

Upon closer examination of the picture I realize this is a true carburetor but not the most common style that you see on Briggs most of the time. The most common style I've run into is on the horizontal crankshaft engines which is the longer tubular style or maybe it's just the gas tank itself...

And once you get it fixed and running learn from this experience and don't troubleshoot it the same way next time. I run into a number of people with cars or mowers who throw Parts at machines and after the 3rd or 4th attempt they get the problem fixed and get it running. The problem with this...

I've never seen one of those gaskets make a bit of difference in the way one of these things runs. It's only there to prevent some dirt from bypass the filter but even that's kind of a moot point on one of these with its foam filter etc. People run these things for decades without even having an...

Read some of this thread and got here from the previous thread that Thomas returned off on, aargh! The biggest problem here was the start of the diagnosis or the attempt to get it to crank. When a riding lawn mower will not crank DO NOT assume or even start thinking about the ignition switch...

Read some of this thread and got here from the previous thread that comments got turned off..argh! The biggest problem here was the start of the diagnosis or the attempt to get it to crank. When a riding lawn mower will not crank DO NOT assume or even start thinking about the ignition switch...

Pretty much the given for any one of these that doesn't run properly is to remove the tank and take the carburetor off the gas tank, get the tank empty and all the crap out of it cuz they will be plenty, then put a new gasket and diaphragm between the carb and the gas tank. That fixes the...

Well, if someone doesn't have the feel for compression blowing out of the hole in their finger they certainly aren't going to have the ability to remove the shroud and adapt it with a drill chuck and an adapter to fit a socket so they can spend one over and as I said from the beginning it's just...

Must be from some of my customers who say they "cleaned out the carburetor" but yet it' still won't run. Then, I clean out the carburetor, at least the important parts that need to be cleaned and guess what...it runs perfectly.

That sounds like a lot of work and kind of hard to tell if you're spinning over 500 600 rp.m. or not. You certainly can't use a vibratach for that and the lost all the digital ones I have and have used don't update quickly enough to give you a consistent reading at that low of an RPM and I doubt...

I forgot to mention that I think most things are that way today. There's two things involved with their planning. They want it to last at least through the warranty. And they don't want to be too much better or too much worse than the competition. Either way would be a problem. If it's too much...

Yes, I have had many people tell me over the past 10 years or so that the battery manufacturers basically make a battery to whatever price point you want. You want a $50 battery here's a $50 battery quality. You want a $85 battery here's a higher quality. You want $125 battery here's the quality...

Ah the infamous missing push rod. It happens quite often on this engine. Normally it's from a slipped valve guide that caused the push rod to bend and pop off in the first place but it can happen without any actual head damage but always be cautious and trying to repair it because normally there...

I'm not sure what you're talking about not being quite right. I know nothing about Australian mowers so I was making a generalization about riding lawn mowers in the US. I'm not sure what belt type has to do with much of anything as they only use the coded belts here because they are a clutched...

I can't agree with that. I have worked on thousands upon thousands of engines and the last time I screwed a compression tester into a lawn mower engine was probably when I was about 12 years old when I first got a compression tester because that was the closest most convenient thing to make the...

Simple fact is they don't make batteries the way they used to. They are all pretty much junk. Anything over 2 to 3 years is on borrowed time. In fact, if you Google it they will tell you that the average lifespan of an automotive car battery is just less than 4 years. That's pathetic. I have had...

A flywheel key on a riding mower shouldn't actually shear due to hitting something with the blade because the fact that it is belt driven allows enough slippage 98 times out of 100 that you will not shear a key. In fact, no riding lawn mower or no more engine at all actually needs the key. They...

You will notice I said nothing about weed eaters. I said lawn mowers and zero turns. I hate weed eaters and when I use them, which is very, very rarely, I have to wait until I happen to have jeans on because using a weed eater in shorts beat your legs to death with debris and that's just...

There was even a factory kohler TSB about fuel filters on the older commands. Using aftermarket filters could cause a problem or after it ran a while it would not flow enough fuel and a factory cooler filter fixed it up. It's probably the only engine I've ever seen a situation for the fuel...

Uh. Most mowers don't have seat belts and most don't have ROPS either. Every time I have used a rider or a zero turn like that it has been in short pants and flip flops and I've never worn safety glasses when using any mower. I've come much closer to having an injury from working on tools...

I'm a little confused by this term check valve if you use. I'm not aware of any such part being in any of these carburetors. They have a needle and seat or what's called an inlet needle or inlet valve etc but those very rarely get clogged up and don't flow. The vast majority of times when an...

Exactly! This should be standard troubleshooting procedure when one isn't running correctly. You're either use a folded shop cloth to block off the intake hole at the carb a little bit or close the choke slightly if that's easier to see if it changes the way it runs. Typically you'll find more...

I see now where there was a post someone saying they mow and when they get done they turn off their blades and lower the engine speed to idle. This is just asking for trouble so everyone needs to stop doing it. Just because one, or a few people have been doing it for decades on multiple machines...

Hills, rough crammy use, low engine speed, and poor cooling from debris and build up is what kills hydros. Far too many people make the mistake of mowing for an hour plus and getting their engine and transmission up to full operating temperatures and then when they're done mowing they will turn...

That could certainly be welded up but it probably has a snapped rod inside of the block. They're really not rare enough to worry about saving and it's going to cost you probably at least $125 to maybe 200 in parts just to get it back together and running. You can buy a good used donor engine...

Yes, that's not going to work properly without a battery in the system but you could just order you a heavy duty enough diode and convert your 36 AC volts to DC and or possibly add a resistor so you would have between 12 and 15 volts all the time. This would make the regulator unnecessary.

I can't wade through all seven pages of these posts but did anything ever get resolved? My first thought is always when some customer says they clean out the carburetor I just roll my eyes because nine times out of 10 or more like 99 times out of 100, they did not clean it properly because most...

I was talking about this bad few because they're only a few in the mower repair industry that do that. Unfortunately, and the auto repair world it's over far worse and the large majority probably 80 or 90%. I tell people all the time that lawnmower shops aren't trying to do extra work to your...

No more at all it's just that I don't tolerate when people make comments like they are rules or exactitudes etc. Many people have different methods to obtain the same results and the same durability and longevity. In other words your mileage may vary.. YMMV. I and a commercial shop but I'm...

There's a saying: "Close enough for give govt work" I find it hilarious but useful. If a head gasket (esp on L head Briggs) doesn't chunk off to badly there is no real reason not to reuse it. I have permatex copper spray for these that I almost always coat of I reuse one. But let's be...

I don't think it matters much as I have seen dozens of these riding lawn mowers with a perfectly operational carb solenoid that still will pop very loudly after a shut down.

I understand that in theory it's just I don't see how the input speed could be that much substantially different unless like I said earlier the belt was really loose and really slipping a lot. On the ones I have seen they didn't do anything more than a slight stutter under a heavy control input...

Something else is going on and causing these to fail. I have used the cheapest of cheap eBay spindles that get shipped to my door for under $10 each for the complete spindle assembly and haven't had one fail yet! Either there's too much tension on the belt but that's pretty much impossible for...

It is obvious that based on design of the police and setup that certain situations are going to create for one hydro is more likely to slip than another but I really for the life of me don't know why it would shorten the life of that one anyways.. There's just that not that much slippage going...

I don't have time to read this entire thread but two things on most Cub cadets or other MTD mowers. I can't believe a tech would replace just the lower belt if it's a two belt double sheave pulley drive system! I have found you never want to replace just one belt even if the other one looks...

*** others have said ,head gaskets are relevant at this point and they never lose enough compression to actually cause them not to run because they will be a mosquito fogger way before that. The gray metallic in the oil will only be seen in an engine when it's brand new because of everything...

Something else is going on and causing these to fail. I have used the cheapest of cheap eBay spindles that get shipped to my door for under $10 each for the complete spindle assembly and haven't had one fail yet! Either there's too much tension on the belt but that's pretty much impossible for...