Craftsman rototiller won't run

I have a craftsman rototiller with a 6hp eager 1 Tecumseh. I rebuilt the Carb last year because after about 30min of use it would start puffing smoke and then it would die and wouldn't restart. After letting it sit for a day to cool down it would start and run but again it would puff smoke and die after 30min of use? I tried adjusting the valves to see if that would help but now it won't run at all. I'm thinking about just rebuilding the engine but I can't seem to find a stamped # on the motor so I can find a rebuild kit. Has anyone had this issue before or can someone tell me what rebuild kit I need? Thanks in advance
Model# 917.293401
Engine model# 143.986001
Engine family TTP195U1G1RA
Displacement 195
D.O.M. 8155 A

You have a Tecumseh engine model OHH060-71101C. Use this number for parts. This manual might be of some help. https://www.mymowerparts.com/pdf/Te...-OVRM120-OVXLC120-OVXL120-OVXL125-695244A.pdf. I would do a little more troubleshooting before trying to rebuild. Cost of rebuilding may be out of line.

I appreciate the info Rivets, the manual should be of great help since my operating/owners manual is long gone.