We may have found other answers which could help you.
Click here for Chainsaw Chain Appear Lubricating
roybi chainsaw not starting?
How to remove the break handle Ryobi PCN 4040?
how can re-assemble my ryobi 3335c chansaw?
spool cover for grass trimmer (RG-ET7535)?
ryobi4040c2 oilpump problem?
20 inch ryobi low compression - - worth repairing???????