Allis 920

Is there anyone here who might have a service manual for the Allis Chalmers 920 lawn and garden tractor. My neighbor just bought one and we got all the filters changed and all the electric parts working as they should. We change all the fuel lines to prevent leaking, have good pressure from the fuel pump but cannot get fuel from the pump to the injectors. I have worked on diesels all my life but never one like the Lambordini in this tractor. I also want to change the oil in the hydrostatic unit but have no specs on what oil to use. If some one has a manual is there a way to buy a copy?

make sure the compression release  lever on the cam shaft really is not stuck  it will act like it is not getting fuel, we poptested the injector worked on the head valve train ect.  we spent days trying to figure that out ,      when the cam would start turning the decoppsesion would stick on and would not go off no matter how fast the engine i spinning.  then it woud come back of when stopped so when you would check the valve movement and lash it would appear just fine,     once all the automatic decompression was removed off the cam then it fired right up but it has to have a good battery and starter,  could not tell you just exctly what lombardini model it was