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Do you have a wiring diagram for it? If so you might consider posting it. Also, post the serial on the unit in case the PTO wiring or parts are serial number sensitive, which many mowers are. How long have you owned it, when did the problem start? Is that a result of hitting something, over...

^^^^^ ether will start a mower but it may also blowout the head gasket.

perfect. There should be no gap between the seat and valve when it is closed. If the valve to rocker arm clearance is consistent during the engine rotation, and never really loose, then the camshaft is just not lifting it. It works by a lifter riding on the cam as it rotates. The cam lobe moves...

normally on a tiller, the hand controls determine forward - sit in one place - reverse. The engine speed is controlled by a lever near the carb. You need to find the engine number and serial to look up those controls.

Hard to know what will go down. Too many people believing the solution to all problems is OPM - other people's money. Andy - keep us posted how the crab boil goes :) and if the o-rings fit.

Does the valve to rocker arm ever get really loose while you hand turn the engine with the spark plug(s) out? If yes then something is holding it open - it is either stuck or the valve seat has fallen out of the head. If you could look at the valve inside the combustion chamber, there should be...

it is that way in other aircooled engines. Suspect they get the most thermal shock and they are larger. That said, I would run the engine he has because it is a L-head engine. If it were an overhead valve engine, it would not be worth the risk of a catastophic failure vs the cost of a new head...

it isn't the best solution but with an L-head engine you replace the crankcase or whole engine when that happens. It is too expensive to tig it, then cut it for new valve seats. This is from another forum but it is how one would do it. It is a temporary fix, it will eventually fail again when...

AI mode at Google will answer that question, and provide places you can buy them. Good luck, everyone seems to have trouble with those.

Briggs made both overhead valve and L-head 190 cc engines. I used to build automotive heads for a living. The answer to your question is an unknown. Sometimes the peening will hold a slightly loose seat depending on how much crush you can get on it with a peen, and how much aluminum you have...

does it do better under load or does it do worse? What comes to my mind is either the govenor is hunting or the mixture is lean. If the mixture is lean, it should do worse under load. If it is the governor, it will hunt more under no load.

puzzled. You posted that it had compression and spark but a test shows zero. Can you clarify?

Let us know. The keys have to move freely and over time the grease can solidify and dirt get in, making the keys fail to work properly. Also the spring you found loose might have changed belt tension.

no, and he wasn't carrying the razor blades either.

More often than not, nothing is up to date anymore.

surprisingly a worn brake shoe on some units can cause it. As to the OP, since SARS2/Covid, when so many hard working people retired out, the quality of everything has suffered. Inflation came in during the last administration too in the worst way as they just spent and spent, (although half...

the basic when a gasoline engine will not start is to figure which of the three items is missing. Fuel and air in a fairly broad ratio Spark Compression You've already ruled out compression. If that engine has a compression release, 75 to 81 psi is fine. If it does not, it is low but it would...

I wonder if the exhaust is partially plugged and by removing a plug wire you have less exhaust. You might look at the carbon spark arrestor screen if you have one. See if the exhaust whooshes after you shut it down.

What Tiger Small engine said, and yes, if it has a plastic cam that can happen. So can a fuel supply failure frpm bad fuel, water in fuel, plugged passage in the carb. I had a edger that did that. Drove me nuts finding the cause. Turned out to be the small fixed pilot jet vibrated loose...

this might be yours https://hondaofcroftonpower.powerdealer.honda.com/parts/powerequipment/lawn-mowers/hrx/HRX217/HRX217K1-HMA/VH74F0601G/references one possibilty is that the key on one side went bad and you did not know it. In that scenario only one wheel would have been driving the mower...

google ai Engine family KAXS.7262CB refers to a Kawasaki 726cc V-twin 4-stroke gasoline engine. [1, 2, 3] Because Kawasaki uses this engine family designation to group multiple specific engine models for emissions and compliance purposes, this family encompasses a few different variations. The...

a lot of those mowers use a clutch system at the outside of each wheel. If so it needs servicing annually, which rarely happens. Also if so, those clutches (called axle keys) handle the freewheeling and drive. Parts 3 and 4 in picture. I am guessing that the whole assembly needs cleaning and...

What about the belt? Is it slipping? did the engine dump some oil on it? Have you checked the engine oil level to see if any is missing like if the bottom seal let loose after 24 years...

I did not have to. I looked very closely with blown up images at the depth of the shadows, and where the ring travel stopped. You had to go over size to get rid of those. Piston to cylinder clearance is only .0015" to .003" when properly set. That is not much.Two things happen when honing a...

I do not know the part nor is there one nearby to inspect. Lots of similar part numbers. There are some used sales on Ebay listed as Kohler stator and module, Kohler stator and harness, etc.. or example here is one. You might do a search there and compare parts to what yours looks like...

I was a machinist who bored and honed blocks and motorcycle cylinders for a living, and told you an unequivocal no. I suspected you were only going to listen to what you want to hear. You indicate you consulted with two machinists about honing it yet YOU HONED IT. Why not let them? You weren't...

He did an ohm check

Split beam are too expensive for most diy mechanics. Common but not that common. Clickers are most common except small inch pounds.

681843 carb which includes a cork float 681844 as the superceded part. Look on Amazon and Ebay.

Duckie, the OP, is MIA. One post only back on June 11.

there are different kinds of brake cleaner. Some are flammable, some not. I use Berryman's B12 carb cleaner or a little gasoline in one of those bottles. Which ever is handy and near by.

His last post was in 2024.

https://www.amazon.com/dp/B07W912S8H?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_7&th=1

in the future, if an old part does not fit with exactly the same error, the problem is not the part.

You asked where the part came from. I gave you a parts image that matched, and a link to a photo on ebay of the exact same part proving that the parts image was correct. If that isn't good enough, have not a clue what will be. Good luck.

yeah, I used to pull on the mower sometimes 10 - 12 times before when it was hot. Now it starts first pull with the technique. Someone else told me about it, I was leary it could be that simple since I have been starting mower engines and working on them since I was 10 or 11, and I am 76 now...

3 things keep a gasoline engine from running - lack of fuel to air ratio, lack of spark, and lack of compression. All three can be affected when a mower sits. Fuel can go bad, even if fuel is drained, rust can form in a tank from moisture in the air, and new fuel can knock it loose. Ethanol...

I had the same issue on a mower and on a pressure washer. Totally different solutions. On the pressure washer, it needed a valve adjustment and the head gasket was minimally leaking when hot. Compression was fine with a compression gauge althought it came up about 20 lbs after the valve...

I would then consider a class in welding at a local JC near you. The cost at JC are normally minimal.

yes.

are you saying that the axle is rusted to the wheel hub? Did you every have them off to grease or antiseize them, or is this the first time?

750F is not high for an exhaust under load, but melting steel as you described is. Personally, I do not know of any epoxy that will maintain strength at the temperature you need it to. Add to that, it has to maintain bonding on a deteriorated surface that vibrates, and expands and contracts...

at that price I would keep an eye on Facebook Marketplace and Craigslist for a used mower to canabalize for parts.

no. You might see if oversize pistons are available, and a machine shop near you can bore it oversize. The cost will probably be as much or more than a new engine from HF

just sharing. when a mixture burns in a cylinder, the burn goes from molecule to molecule. If the mixture is too rich, the lack of oxygen between molecules slows the burn but the excess fuel molecules cool the burn. If the mixture is too lean, the distance between fuel molecules is so great the...

follow the wire from the starter. Failure to turn over could be a safety switch, an ignition switch, battery or connection. I would not jump to any conclusions until I put a VOM on the terminals and figured where the voltage is missing.

I can only tell you what articles on the Internet and Google AI say to do to rewire from a 4 to a 3 wire system. Maybe someone here who has done it can do a better job of explaining it. Searching Google for "adapt 4 wire to 3 wire Kohler regulator - rectifier" yields lots of answers but I do...

because it is the center tap of the coil. It acts like a ground between the two legs of the coil but it may not be grounded to the engine block for a reason.

yes - some camshafts today have pressed on gears and they can spin and throw timing off. The carb spitting back out is a classic symptom of a camshaft that is out of time. Or sometimes a plugged exhaust.

4 pages. Three things needed - fuel/air ratio which is quite broad, spark at the right time that is flexible, and compression which is also flexible up to a point. The job is to figure which is missing, then fix it. I am guessing the rope tore some wires under the engine, or sheared the key...