Nissan Vanette LD20II

Hello!! My house has decided to stop taking me and the camshaft and the piston have broken, which I know, although there is the possibility that something else is evil.

I would like to be able to fix it, since I do not have how to pay a mechanic ... if anyone knows about the manual (which I have looked for it everywhere) or something that can help me I would appreciate it very much.

Before repairing that engine, I recommend that you change it to a scratch, which will be much cheaper.

Thanks for the advice, they had already given it to me, but even if I would find a cheap engine I could not pay it and when I spoiled me something else I would not know how to fix it, so I would like to find the manual.

Nobody knows anything about this ????