Toro model 20200, serial number 315000XXX.
Mower ran for years without any mowing issues. Then one day, the belt that connects the motor drive shaft with the smaller pulley of the deck drive, shredded. See pic of that pulley.
Installed a new OEM belt and started the motor. The belt started chirping and then it began to turn the pulley and the unengaged blades started turning. In a minute, the belt burned up.
Installed a second OEM belt. Checked for slack in the cable...yes. checked that the spindle assemblies turned easily.... yes. Checked for deformed pulleys...no. Turned the blades and checked for plenty of slack in the belt....turning the blades does not make the belt turn, plenty of slack.
Started the mower with the blade disengaged and it started chirping again and the blades turned and burned up the belt again.
Installed a different belt, wondering if it's a manufacturer defect in the first two. Again, the belt started chirping and I cut the power to save the belt.
What could be wrong? The only thing that comes to mind is that the pulleys are at fault, but everything looks and feels fine.
Mower ran for years without any mowing issues. Then one day, the belt that connects the motor drive shaft with the smaller pulley of the deck drive, shredded. See pic of that pulley.
Installed a new OEM belt and started the motor. The belt started chirping and then it began to turn the pulley and the unengaged blades started turning. In a minute, the belt burned up.
Installed a second OEM belt. Checked for slack in the cable...yes. checked that the spindle assemblies turned easily.... yes. Checked for deformed pulleys...no. Turned the blades and checked for plenty of slack in the belt....turning the blades does not make the belt turn, plenty of slack.
Started the mower with the blade disengaged and it started chirping again and the blades turned and burned up the belt again.
Installed a different belt, wondering if it's a manufacturer defect in the first two. Again, the belt started chirping and I cut the power to save the belt.
What could be wrong? The only thing that comes to mind is that the pulleys are at fault, but everything looks and feels fine.