Poulan engine rebuilding spec ?

I have a Poulan chainsaw that will not start. I believe the piston is damaged and I need to replace the cyclinder, piston and ring. Parts are avaiable but I need how to information such as; how tight do I need to torque the bolts, how to replace the seals, how do I fit the ring? If this was a Ford v8 the spec would be avaiable. I would like to have engine rebuilt specs for this engine. Where can I find this information?