How to set the timing in a atv.
 

I got a Suzuki atv its a 1986 Suzuki 230lts. Im going to do a rebuilt and was wondering what tips and tricks you guys might have on rebuilting it with another set of rings and mabey a piston. and how to set the timing the timing is the only thing that worries me. Also how do i redo the valves and what feelers do i need.