case 275 stops pulling

[hardwkingman]

replaced the clutch and sometimes it will stop pulling. If I am going up hill it will hold but not pull. I can raise or lower the lift just a bit and it takes right off. I need some help, I have checked the fluid and it is at the right level.

 

[art]

Does the clutch have the right free play? Is it a two step flywheel?