Ariens yt12 with replacement engine B&S 28r707

[Xxtjtheboater95xx]

Right, I have three flywheels though(1 from blown engine, 1 from newer engine, 1 from the guy that i bought the newer engine from since i told him some of the plastic teeth were already worn). I will try the 1 frame the blown engine on the newer engine. The one I have on the newer engine that I'm having trouble with is the replacement one the guy gave me but who knows if its the right one.

This was just for clarification*

 

[Xxtjtheboater95xx]

Also, I did what you said, taking the carb and muffler off and spraying carb cleaner in those ports and didn't see any leakage out from the valve seat area, so I'm pretty sure they are fine.

FYI when I took the head off again today after cleaning everything well yesterday, I noticed the exhaust valve was white again but I researched this and seemed this is usually normal since the hottest air is going out through the exhaust anyway.

 

[Fish]

What are the valve clearances set at?

 

[Xxtjtheboater95xx]

Last time I checked they were

Intake: .006

Exhaust: .009

So that's within spec

 

[Fish]

So do you have the flywheel that came on the engine you have now? if so, put that back on just to see.

 

[Xxtjtheboater95xx]

Flywheel key was sheared. Haven't been able to try it now since I need a new key.

But I'm wondering how I can prevent this from happening the next time I put the flywheel on, any suggestions.?

Thanks.

 

[Xxtjtheboater95xx]

I was reluctant to think it could have possibly been the flywheel key because I just recently put it on, even though I looked before, it was a brief look and could clearly see it with good light, and since I resorted to taking the flywheel off anyway.

 

[Fish]

Remove the flywheel nut and make sure that the key is not partially sheared, it could be the cause of the hot muffler, you may not have torqued the nut down tight enough.

We went the long way around the barn, eh?

You didn't torque the flywheel nut tight enough, I use an impact wrench myself.

On the top of the flywheel, there are two threaded holes, you could thread in two long bolts and use that to lock the flywheel.

 

[Xxtjtheboater95xx]

Yeah, I didn't realize how much torque played into keeping the key from shearing, I knew that happens but I wasn't sure what caused the key to shear.

now I know

Sorry for the trouble.

 

[Fish]

No trouble, it got me to break out my valve cutters!!! Hopefully you are ready to get that thing going!