Do you have the correct belt on that deck ?
I don't know about any u-tubes, sorry.
There is no actual clutch, just the engagement lever that has a cable routed to the idler pulley bracket on the deck. When you engage the lever (by steering wheel) it pulls the pulley bracket so the belt gets tight & engages the blades.
That can be adjusted to one position or another. (at least on my former 1998 craftsman 917 xxxx)
