Auger blades won't turn

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

One of the grip levers should engage a clutch that controls the augers. The other grip lever should engage a clutch to drive the wheels. Figure out which is which, and track the linkage from that lever down to the gearbox between the augers and the impeller. See if there's an adjustment you can make there.

If not... the gearbox may be damaged, possibly by hitting a solid object with hardened bolts in the place of your shear pins. ALWAYS use soft shear pins!

check tension on the belts
check for broken belt

check for bent blower and auger blades
check rear blower bearing, engine off( grab rear of shaft pull up and down) shouldnt move very much. if it does bearing bad

I wonder if your cable has broken in half.

take the side panel off and loosen the belt tensioner, replace belt and re tension

Check for another sheared shear pin.

When you got something caught in the auger, the shear-pin probably did it s job and broke, to save the gear box. Remove the old shear pin and install a new one

You will have to take the top cover off of the snowblower there should be a belt that runs the auger