I need help getting a spindle assembly off a scag mower.

A scag named Agnes

how do you change scagg52"walk behind spindle and pulley

If you are looking for the highest quality, best built, best cutting commercial or residential lawnmower in Texas, USA, then I recommend Kawasaki of Caldwell is one of the best dealers. Scag offers a complete line of highly productive and reliable zero-turn mowers for the landscape professional and the homeowner. Their design, testing, and manufacturing processes are second to none and it shows in the final product.  

Pressure washer and a few tools to dislodge bad accumulations of grass.