How do I put belt on a toro 52 inch z master 253 zero turn

Question edited for clarity, full 'make model (what it is)'.
Question moved from Cars and Trucks category to correct Toro.

In that scenario, the clutch jamming and locking up against something may be a possibility. If the clutch just jams it holds the blades on contact with the drive.

Worn pulleys, badly aligned pulleys, or sticky bearing are much more likely. There is lots of help here as this is a known issue.

https://www.google.com/search?q=Toro+timecutter+breaking+belts

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try tighting tensor ajustment or maybe the belt needs replaced. cheers

Make sure that blades are not engaged which will cause the pulley to be out further making the belt too tight for install. There may also be a tensioner pulley that may need to be released.

try toros web site you should be able to type in model number and it may show you a diagram or a book you could buy

do have the belts off brake on and handles out if not it will do that or battery may need charged or soilnoid could be going bad if you turn the key on and off fast it usually will turn over

Check tranny/ pump belt

Try CCW....

bypass the safety switches one at a time to test them

check the switches on the handles

Choose an operator manual or a service manual from this page. I'm sure a belt diagram is there.
http://www.toro.com/en-us/Professional-Contractor/Mowers/Commercial-Zero-Turn-Mowers/Pages/Model.aspx?pid=74296