Blades do not engage

I have a Toro Wheel Horse 16-38 HXL. While lifting the PTO Lever to engage the blades, something snapped and the lever became loose, (no tension) and the blades are not engaged.. How do I go about finding what may have broke, possible cable or spring, I'm guessing. Please help, I am 90 and dont see to well.---Mayway

http://static.fatsoma.com/gts-pdfs/toro/16-38-hxl-&-16-38-hxle-garden-tractor-71227-&-71242.pdf This is parts list for your tractor. Page 17 item 6 part# 88-6130 spring-deck engagement, I believe this may be the part you need.

Results This is your engine manual & parts list.

Let us know if this helps or not, thanks. MERRY CHRISTMAS Mayway!