Isolate bad pully on 48" skag mower deck

[Daniel C]

How do you guys test pulleys for howling.I would like to change it before it goes but not sure which one it is? Thanks

 

[Steve0853]

A technique I have used in similar situations is to use about a 2 or 3 foot section of 3/4" rubber hose sort of like a stethoscope. Put one end against your ear and the other near the pulley. You'll be able to tell which one is squealing.