Here you go, T.J.,
Driving pulley (motor);
(measured on O.D. of step)
1.884 inches
2.223 inches
2.597 inches
Driven pulley (worm shaft);
(measured on O.D. of step)
2.164 inches
2.912 inches
3.701 inches
Above measurements should be very close, I measured them with a dial
caliper.
(note: the largest diameter of the driven pulley is next to the motor.
Belt;
O.D. 23.5 inches
I.D. 21.25 inches
Above measurements approximate, measured from a piece of rope, that
transferred the length from the belt.
Belt identification;
Gates (brand) Powerated 6823
First Rope (brand) A-22
Hope this helps! (down under) 8-)
Leo (pearland, texas)