I ran into the first video a couple days ago. Looks easy.
I have the tools to do this. I have a puller that looks just like the video. Ball pien hammer rather than a claw hammer. Looks more 'Pro"

The 'lock channels...to the old guys it is a waterpump pliers. I have some narrow head combination wrenches as well as a 'thinned' adjustable wrench. If the motor shaft is U.S. it should go pretty easy. McMaster has some round belts but it looks like the V belt will work too. I usually make a guess on the belt length then get 4 of them at the parts store and bring all but one back.
I saw a used servo motor last week but it's already gone.
Are thesse clutches a 'dog' style or a 'slippable one like a car clutch.
Too bad they don't make a mini Crowerglide. haha That I would understand.
The snow is finally melting, looks like rain. We really need it to wash the salt awway. I may go for a cruise at least to fill up the tank.