Chainsaw Repair

thanks ron , the chain is comming off from exesive heat , makes  the chain loose , after it (chain) cools down it shrinks back to a good tightness.
 my father brought this saw  new and its never been an " oil pumper"  even after a service putting the tip near some wood and giving it a rev , the oil flicking off the chain is limmited .
One thing that doese come to mind is that oil spits out the top of the oil filler cap enough to cover your glove and be a pain . Is there any way of obtaining a workshop manuel .

P.S Most of the stihl places here tell me to throw it out . or use it as a boat anchore   

tanks for the reply