where can i get a manual for the clutch assembly on a eager-1 snowblower?

I have a old Eager-1 snowblower model #536.905903 and the pins sheared off the clutch assembly . I replaced the pins but I am having a difficult time in reaasembly. this old snowblower was given to me and the engine runs good but I am not sure it was assembled correctly before I received it. the clutch slides on a shaft and engages the impeller.