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Another form of retainer would be more expensive to purchase and install. The shaft would have to have a hole in it or threaded.

I have done that.

WTF Rox?

I must have missed something, I thought this is a lawn mower forum? Not pc back to the future.

Like Ran said, oil filter the oil filler tube's O ring and the valve cover gaskets are everyday leaks.

The main seal is not that difficult to replace and is not a large expense. That's if the engine pully comes right off. No need to pull the engine off. The oil will ride down the crank and settle on the pulley. Mine would be intermittent. Couple of sheet metal screws into the seal and it...

Does that mean if it's threaded all the way and a nut is installed and tightened, it's a screw?

Loosen the valve rocker and pully the push rod out. Is it bent. If not, reinsert it and holding pressure against the top, turn the engine by have and see if it goes up and down. If so, reinstall the rocker and set the valve lash at .005" just a bit after TDC. One thing to check after you get...

That pic does not look like a RC12YC. It is a 5\8" diameter, that is a 3\4" plug. A RN12YC is the large plug. I buy in sets of 8 from Amazon and never had a bad one. $2-3 each.

Unbolting the engine is easy. 4 bolts then just slide the engine back. No need to disconnect anything. When reinstalling the bolts.\, you can usually see where the engine sat and the hole line up easy. If the pulleys don't fall off, this is the method I use.

I agre with GearHead. If the yard is flat and few obstructions to go around, then a tractor or smaller SW ZT would be better. I have 2 Cub ZTR-S's and and a Toro SW4200 and love them all. Thank God, no repairs on any of them. 3 acres of decent sized hills. I would recommend going larger...

IF it is less than three years old call your local Lowes store. They replaced mine with a newer model one after I decided to clean the deck underside with a power washer. Blew the motor even though I let it dry for a week. I just rolled it in and carted a new one out in the box. My son gave...

I have watched many tests being done on the subject of ethanol and additives. My take-away is the it takes over a year for the ethanol to separate out and gel up. Most additives do nothing for that. Ethanol free gas does not gel. So, for my 4 cycle engines I use regular 87 octane gas and add...

Good Old Walmart. I've been using their batteries for many years and will hold up as well as ones with twice the price. $30 for a 230 amp, which is all needed for a single cylinder. I think $40 for a 275 amp. I bring it home, top off the charge and always put a battery tender when not used...

I don't have your engine info, but some are just a rubber tube from the engine, or valve cover, to the air cleaner housing. Other have a plate, with the tube, mounted to the engine that can be removed. Under the plate is a rubber diaphragm that should be cleaned and its functionality checked...

Valves, guides and breather. Just trying to save an engine tear down.

Before doing a ring job, check the easier items. Valve and guides, head gasket and all other gaskets, clean the carb and replace all filters.

I would also check the valve lash and value seats. Maybe do a leak down test.

If you're jumping it at the battery, measure the regulator voltage with the charge on. Should be same as at the battery. With the engine running and the jump still on, I'm not sure if the stator would supply enough to measure an increase from a large battery's output. Get the mower's battery...

Jim, I'm having problems following your posts and visualizing what the issue is. You bounce back and forth with the engine 'not turning over'. That would mean it is not rotating when the key is turned. Then you state you 'have spark' or 'does not start'. This would mean that it is turning...

If you jump directly to the starter, what? No turn, bad starter.

Don't forget the engine's KILL wire.

Could you not take a wire from the battery, put it through a 20a fuse, attach it to the clutch wire through a switch to see if the fuse blows after some time? This would confirm the condition of the clutch and it's lead. You could then cut the load side of the mower's fuse holder and attach...

Tract Supply carries a good amount of Implement paint. I get JD and Hussy there.

Little confused as you said the smoke was coming out of the grass chute. This would indicate the issue is down by the blades. Remove the blades and inspect for something rubberish wound around the spindle shaves. With the blades off, try turning them on and see if the smell still exist. The...

Charge the battery then take to auto parts store and have it checked. It may not be able to charge, or hold, a full charge. Make sure all connections are clean and tight. If you measure voltage from Batt-, or regulator ground, to chassis it should be very close to 0v with battery connected...

Have had a few PTO switches cause this type of problem. Toggling them on\off a few times may get it to start. Check the switch with an ohm meter to verify good contact in both positions. Sounds like your in need of the schematics of the wiring and the harness. Typically, they are found in...

You should consider replacing the battery. Just because it charges to 12v, doesn't mean it will have the amperage to run the starter. An internal short in the battery cells reduces the output capability, just as your load test showed. At WOT, I would expect close to 14v.

Most cheap carb, for me, show surging problems. So, if it corrects the original issue and causes surging, at least I know what the state of the original carb is. Some time a quick ream of the main jet solves the issue. And I agree, at least you have some internal repair parts. Just use as a...

Just because it is an true OEM part, doesn't mean it's not made in China. I get OEM parts from all over the globe.

Remove the solenoid. There should be a spring plunger arm on the inside of it. Some have a rubber black cap. Should move freely. For test purposes, clip the small arm off. This will disable the solenoid function of shutting off fuel when the power is turned off. Reinstall and do not...

You could also run the battery to an auto supply store when it's fully charged for a free test.

https://www.amazon.com/Maintenance-Tachometer-Replaceable-Motorcycle-Paramotors/dp/B07PMJH7QV/ref=sxin_17_pa_sp_search_thematic_sspa?content-id=amzn1.sym.4dd028e5-8885-4eb8-ace1-bb7a46f96ef1%3Aamzn1.sym.4dd028e5-8885-4eb8-ace1-bb7a46f96ef1&crid=3RM2JGZHBAJD7&cv_ct_cx=small%2Bengine%2Btach&dib=eyJ...

Inexpensive tack. Just clip the lean on the spark plug wire.

I have found cheap Nikki replacements and install them in place of the Walbro. They work much better. May just have to ream the opening in the intake plastic tube cuz the choke may drag. I don't use the Walbro any longer

Don't assume anything!!

I buy a lot of used mowers. If it's a hydro and doesn't run, I walk away unless there's enough good sellable parts to more than make up the price paid. You won't know if it drive, even at all, or know anything about the deck drive and spindle condition. If the starter is still installed, look...

Do we know that we have good, unobstructed, fuel flow to the carb?

Here's the IPL with wiring diagrams. https://www.scag.com/wp-content/uploads/2020/04/STT_IPL_Book_06277.pdf

Also look under the machine by the engine pulley and idlers. The nut on the bolt is a lock nut. So two nuts get tightened against each other with metal between. May be a threaded hole that it screws into.

If you can get it to drop down, spray clean and oil the shaft of the Bendix gear. It has to move up and down freely. You have to turn the gear for it to raise. The whirring sound should be the motor\gear spinning, but not rising up to the flywheel. My 2014 machine has been doing that the...

If I had to replace my machine, for my 2-3 acre plot, I would purchase a used steering wheel zero turn. I did that back in 2018 and have never regretted it. Spent a little more and got a commercial machine with the Kohler and 60 inch deck. I like the steering wheel as it tracks better along...

With the carb installed and the bowl off, turn the gas on and it should run out of the bottom of the carb until you lift the float. If it doesn't, you have a restriction in the fuel line or a bad pump, if it has one. There must be a fuel filter. You should see gas in it. If gas is not...

BEST WAY is to use your gear puller if you can. Alternative is to find a strong point of the block under the edge of the flywheel and put a small pry bar there, put the flywheel nut back on and leave a little high on the threads. Apply some pressure on the bar and a medium smack of a heavy...

Kinda reaching here, but remove the belt pulleys and blades off the spindle shafts. Clean and inspect the splines on both ends of the shafts and the mating pulleys and belts Check all idlers for correct alignment to others and spins freely and quietly. Check belt tension at all deck heights...

If you were to unplug the reverse switch at the trans, would it allow it to mow in reverse? I have done this on non-RMC mowers.

I don't know if I missed the answer to the gent's question or if it didn't get answered. "What makes it a mulcher?". To me it means blocking off the shoot, adding a plug\baffle and mulching blades. I have 2 ZT, one for mulching my front lawn and the shoot for the back 40. The mulcher does a...

I agree with GearHead. I have a long sloped are and used to use a large Deere garden tractor. After falling off twice, I purchased a used CC Commercial with the steering wheel and a 60" deck. Even though I am more comfortable going up\down it does great riding the hill. The fact that the...

Does the mower easily free wheel? If not, check for a locked brake.