Hello, dave from Wisconsin,
I have , I believe to be a 1993 sears lawn mower with a spicer transmission in it. The model for the lawn mower is-- 502.255090 serial no. 28403837. When I tied putting the lawn mower into any gear the mower would not move, I checked the belts and they're fine , I also raised the mower off the ground and went through all the gears and the wheels spun freely while machie was running and engaged. The transmission is made by spicer and I have it torn apart and it seems like the arm that engages the trans. Sleeve doesn't engage to make the main pulley gear to spin. Got any clues and if so parts for this baby. I want to keep this mower cause one of my sons bought it for me and rebuilt the motor before he supprised us with it thanks dave and diane

Hello, this is dave from wis.
I believe I have a 1993 sears riding lawn mower, model--502.255090, serial no. 28403837. The trans is made by spicer stamped 9-1-93 4450-3 056191.
The trans does not work in any gear,belts are fine. I also tried it in all gears with wheels off the ground while running and nothing. The trannys apart and when I tried engaging the tranny , I noticed that the main gear for the pulley didn't engage can you help with parts I need and do you have them in stock thanks dave s.

Do you have any small engine shops around? You could check with sears for parts, though they would be a little more $. OR a online source using search words like spicer trans parts. Stuff like that.