Snowblower stalls without reason and now makes a squeeling noise. craftsman 8.5 hp model 536.891851

https://www.drmower.ca/products/944-527061-manual-for-27-craftsman-snowblowers-8-5-hp-tecumseh-engine

https://www.bayservice.ca/IPL/SEARS%20IPLS/944.5XXXXX/527061.pdf

https://www.searspartsdirect.com/combo/0247-1234670/craftsman-snowblower-parts

https://www.google.com/search?q=C950-52151-1&rlz=1C1CHBF_enUS757US757&oq=C950-52151-1&aqs=chrome..69i57.655j0j4&sourceid=chrome&ie=UTF-8

If it's the starter that makes a humming noise then you need to check the starter out. the gears could be stripped or even a tooth missing so it won't grab the fly wheel. Try pulling the start rope and see if that makes a difference. My Craftsman 8 horse has a recoil starter as well and I quite often use it as well. I don't always use the electric start.

Hard to tell how much oil to put in new snowblower ...

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Jan 14, 2012 - The manual states that the snowblower has an oil capacity of 20 oz and it ... How much oil do I need to put in my Craftsman model 917.388122 ...Missing: 627804x79a ‎spirit

Where can you get skid plates for Spirit 8 hp 27 Model ...

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Where can you get skid plates for Spirit 8 hp 27 Model 627804X79A snow blower? Where can ... What viscosity oil does a 5 hp techumsen yardmaster snow blowerrequire? My 5hp ... How much hp does a 205cc Briggs and straton ohv snow blowerengine have? ... Take the cap off that nipple and tip back to drain the old oil.

make sure belts arent around the guides to keep the belts on.
does it smoke or make any other noise
why did yu change all the parts

Yes

Same thing happened to me with my 26 horse kohler craftsman. Replaced EVERYTHING (spark plug, fuel filter, oil filter, and degunked the carborator), and still was flooding. It ended up being the flywheel key. Cheap part, quick fix. I guess it can happen when you hit something hard with the deck, or it can just happen without reason... I hit a snowbank hard with my snowblower attachment, but I didn't even realize it until afterwards because it kept running fine. Supposedly, even after the strain to the engine, it won't always stall out. It will keep running (but maybe rougher) until you shut it off. Then when you go to start it again, you will have no luck because all the timing is out of whack. It cost me $80 to have a repair company fix it. I think the part was only $5.

Sounds like you coil is over heating after running a few minutes. The windings are seperating, then when it sools they make contact again. Try replacing the coil.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

Not sure if your looking for a parts manual or a user manual but if you go here you can find the parts manual:
http://www.searspartsdirect.com/partsdirect/getModel!retrieve.pd?modelNumber=536.885921