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Check and make sure you have correct blade drive belt on it, one a little too small will cause this just like one too big wont engage fully.

The crank case is where all internal parts are, piston, connecting rod etc.

If you can afford it go with TS 354XGD, it has a K66 transmission with locking drives, for the long haul it would be better than the 254 which probably has K46.

Wow I would love to find one like that !

One thing I haven’t seen is check the engine oil, if overfull be sure and change it before starting engine.

Don’t baby the engine, it has been run in at factory, go full throttle to keep engine cool, change oil after first 5 hrs. Then what ever book says, I Change mine at 50 hrs but most summers I end up at around 46 hrs so I just change at end of each mowing season, I have the dreaded Koehler courage...

It looks like a CV series which is the industrial version, as for model number I have no clue, go to Kohler.com and comparing engines, this engine will have hydraulic valves so no adjustment needed, good luck !

You can take battery to Autozone or O’Reilly,s or any other chain auto parts store and they will load test battery and see if its any good, they do it free of charge.

I wish a lot more would give us an update on how the fix turned out.

My best guess would be like modern cars, replace most any part dealer has to reprogram computer to work, to me the mower thinks you replaced mower deck and dealer will need to plug in and get it working again.

The John Deere numbers is what is needed, on the tractor frame like Rivits said, look behind left rear tire on outside of frame.

I saw on a video (not sure of name of video) that the mower will be in $5000 range, if you Google mower you can find a couple reviews, I did watch Dirt Monkey's review on Youtube and mower is pretty strong, he mowed some tall stuff and it had no problem, he did have all 6 batteries in it.

I remember OTASCO {Oklahoma Tire And Supply Company} sold Chieftan mowers like that in the 80's.

Definitely not too old, I have a 2006 Gravley 1844 HD with almost 900 hrs and still going strong, I've never had any problem getting parts, 211 hrs is nothing for that machine. be sure and get fresh gas in it and run it an hour or two and if it runs good change oil and filters shut off gas and...

I just looked at exploded view and the item number list on Hydro Gear 3100 and I don't see one. ?

Be sure the work order says one cylinder wasn't firing on brand new unit, and keep that work order till warranty is over, one thing i would do is contact Kubota and tell them what happened and ask for an extended warranty on engine, they might not do it, but they might. that way if engine...

Be sure and take blower housing off and check for mice nest and damage, sitting that long under tarp you have a good chance of chewed wires and a nest that will overheat engine when you get it started.

Ok i'll start the argument, I have never seen the benefit of using full synthetic motor oil, i change my oil at 50 hrs on my mowers or once a year, my cars at 4000 miles or once a year, most every manual says you can use synthetic but can`t extend service intervals. Next ?

First try unplugging spark plugs one at a time, sounds like you might have a dead cylinder,

Here is Jacks small engines. https://www.jackssmallengines.com/jacks-parts...

See if this helps. https://www.bing.com/images/search?q=gravely+47366&qpvt=gravley+47366&FORM=IGRE

I've had pretty good luck with lapping compound, as long a seats are solid in block try removing springs and lap them in, i have a suction cup tool i had for aircraft engines that works very well after cleaning top of valve.

Are the e-track or just plane load locks ? I owned a semi with step deck trailer for 20 years and this is very funny to me, thanks for early morning laugh !

Take valve cover off dead side and see if push rods are still in place, go on youtube and type in how to adjust valves on Briggs and Stratten, if push rods are off you need to pull them out and make sure not damaged, put on flat surface and roll to see if out of round (if so replace) make sure...

is the automatic compression release intact on camshaft, a broken acr will cause problems you are discribing.

I would also say the Scag, that Vanguard engine is very solid, 150 hrs in nothing, like Tom3 said you know the history, keep up with maintenance and it will give you many years of great service.

This has become so common we have started using a card we load with enough money to buy what ever it is, I only have 2accounts that have my.bank info, one is car loan with Chase and other is credit card with Capitol One, since we started doing this we haven't had any problem. This works on...

It sounds like one of the safety switches is the problem, like Bert said make sure everything is where it should be. Park brake set drive controls in neutral and mower deck off. Check that safety switches are in place, one might have come loose.

I agree lack of maintenance and simply checking oil is a major problem. I own a Jeep Renegade and am on Renegade forum, I don't know how many came on to complain their 2.4 multi air shut down and had to be towed to dealer, the problem is the 0W20 oil burns off in some of the engines, it shuts...

I'm still having great service out of my Courage 19hp, its never had synthetic oil in it, always Pennzoil 10W30 and I'm up to 867 hrs as of last mow,. Before first mow each year I take fan cover off and check.bolt torque and clean fins, I change oil each 50 hrs and keep air pre cleaner clean...

I would say starter also, those opposed twin Briggs are pretty solid and rairley need valve work.

I've been using a iPad for around 10 years, doubt if I will ever go back to PC.

With that few hrs don't touch it, take to dealer and see what they say.

I have a Gravley that won't return on its own, its been that way since new, I don't think you have a problem, I can get mine going the speed I want and turn loose of both handles it will gradually slow down but won't go to neutral, it's nice if you want to take a drink or scratch your nose and...

If it was overfilled with oil that will cause smoking also, disregard my next msg, just make sure oil isn't flooded with gas, did you just have oil changed or added oil to it ? Also too much oil can hydrolock engine to where starter can't turn engine over.

The seat on carburetor is not cutting fuel off, it let fuel drain into sump, change oil if you have a fuel shut off use it evertime you shut off engine, you can take off bottom of carburetor and clean plunger that shuts off fuel when you turn off engine, if plunger missing someone clipped it off...

Has to be something to do with belt, I've never seen both hydrostatic drives go out at same time, make sure spring isn't broken on idler pulley that keeps drive belt tight, or that the idler arm hasn't seized to frame.

The Bronco has same drive system as Pony, on Bronco you push right peddle to go, the farther down the faster. So no need to use clutch on pony, it has same veri-drive as Bronco

Check the oil level, it might have dumped gas into oil sump and being overfull is causing white smoke.

I have a SV590 18 hp Courage with over 800 hours on it, if you take care of them you can get good service out of one, all I've done is adjust valves every couple years and checked torque on pan bolts every year, I'm quite sure I'll get well over 1000 hours out of it.

I just typed in Gravley Z44pro. In google, it popped up several results on it.

Same here, I normally tell people the by the book way, but I do it exactly like you ?

I just looked it up, it came out with a Kawasaki engine and it has hydrostatic drive pump on each wheel where mine has a single pump that drives a high pressure motor on each wheels, it does look a lot like mine. I think I would pass on it, way over priced.

That sounds like a lot of hours for residential use, I have a 2006 ZT18/44XL as of today I have 874 hours that's an average of 62.4 hours a year which is a little over residential average. What year is it and which engine, find out if engine has been replaced and drive pump oil has had regular...

I would try a 18 hp for it, if you want to go with twin just get as small hp as you can.

Yes I agree with Bert, most likely worn out blades or wrong length if blades are new.

When you put new seal in leave it a little higher or a little lower than old seal, if there is a grove in the engine where seal goes that will give better seal. Warning don't drive in too deep I've had piston rod rub against new seal, when you get it in take out spark plug and make sure it turns...

Look on back of the blower housing above spark plug, at that time the etched it into the metal housing.

They over size engines on mowers to sell more, most people will buy what ever has most horsepower thinking it's the best mower, you could put an 18 hp single in it and it would work fine, my Gravley 1844XT commercial grade has a 18 hp Kohler Courage engine, it will mow faster than my back will...