Ariens yt12 with replacement engine B&S 28r707

[Xxtjtheboater95xx]

Went to the nearest lawn mower parts store and got a new flywheel key(in the middle of a snowstorm no less), started up the first try and runs like a champ!!!

You really can't tell that the flywheel key is sheared until you take the flywheel off.

Lesson learned.

Luckily everything works for this huge snowstorm here in the northeast

I was actually installing the flywheel when we already had about 5 inches of snow on the ground

I'm still surprised when I put the flywheel on the first time that the key would have sheared that quickly, meaning it wouldn't have run ok the first time or something.

 

[chockkicker]

Hi guys, been reading these forums for a while now for your great help. This time though, I think I have a unique problem but it could just be a carb problem.

Here's the story

I have been using this mower over the summer, I bought it with a blown engine for a great price with multiple attachments including a snowblower on it right now. I went to start it the other day when we had a big snow storm and it wouldn't start right away and the cranking was pretty slow so I thought it was the battery. I cranked it a bunch of times and the flywheel teeth were a little stripped in one spot but after all those cranks it seemed to strip more and more of the teeth so I had an extra flywheel with a good ring gear. And it did start but I noticed afterward that the starter pinion gear was stripped now, and I think this is because the starter froze in the up position from the really cold weather and it rained and then froze during this whole process.

I also had an extra pinion gear and replaced that last night so that's all good. But still when I try to start it, it will start with a few cranks but only when I disconnect the transmission from the engine with a knob and this allows it to start because it is not spinning all those extra belts.

Still when it does start, it doesn't rev to full speed like it normally does I'm pretty sure because of the sound.

It was last night I started it again with the new flywheel and starter gear and I saw the muffler inside and it was red hot and so I shut it down. It has enough oil and is sitting on a level surface. The redness might be normal, but I just haven't seen it run before at night so I didn't want to wreck it and I just know it wasn't running right in the first place, thinking it might just not be getting enough fuel to run faster and I would think it needs a carb cleaning. But it worked well when it was warm out and only now having trouble. As I was thinking this, I hoped the new flywheel didn't change anything, I mean I didn't weigh them but they look exactly the same and they are both pretty darn heavy.

Ask me any questions you may have. Thank you for your help. I tried to give as much information as possible but I may have missed something.

Running to lean a fuel air mixture will cause hot exhaust

 

[lfredg]

Finally was able to check the valve clearances, and they are within spec.had to take carb off for that so I cleaned the carb again and it's clean. I try to start it and it'll start when I choke it and will run for a few seconds and then shuts down, if I keep pushing the choke in and out it'll keep running but I'm thinking the guy gave me the wrong flywheel, but he knew what engine I bought from him. Anyway it fits but I don't know whether a wrong flywheel will cause the engine not to run right. Or if I should look for something else instead of taking the damn flywheel of again.

when you checked valve clearance were you on tdc of compression stroke it still sounds like your valves are out of adjustment and that happens if set on wrong stroke

 

[maz94]

take the carb of again soak it in a mix of gas and sea foam of night then blow it out with compressed air make sure u get all the ports etc

If you cant fix it with a HAMMER or DUCT TAPE it in an electrical problem Sorry just trying to lighting the load. I also think it is a valve

 

[maz94]

Finally was able to check the valve clearances, and they are within spec.had to take carb off for that so I cleaned the carb again and it's clean. I try to start it and it'll start when I choke it and will run for a few seconds and then shuts down, if I keep pushing the choke in and out it'll keep running but I'm thinking the guy gave me the wrong flywheel, but he knew what engine I bought from him. Anyway it fits but I don't know whether a wrong flywheel will cause the engine not to run right. Or if I should look for something else instead of taking the damn flywheel of again.

First I think if it was the wrong flywheel it would kick back and not start at all, it sounds like more of a fuel problem. Is there a fuel filter, if so it may be clogged, if it runs for a short time could be clogged vents in the gas cap. Check the vent holes in the cap. Check gaskets, Make sure they are not sucking air in. Soaking carb doesn't say it is cleaned out, it could have a tiny piece of debris in the main jet. Try the easy things first Cap, Filter or carb loose. I hope this helped Good Luck Maz94]

 

[Fish]

Went to the nearest lawn mower parts store and got a new flywheel key(in the middle of a snowstorm no less), started up the first try and runs like a champ!!!

.

He said it was fixed.