I am working on a Ryobi weed trimmer and am wondering how you disassemble the engine, mainly how you would take the piston out. I'm having an issue with no compression, since it is a four cycle I can't see the piston through the exhaust port.
To remove piston with connecting rod i have to hammer out the shaft---witch was not easy.Found bad piston,the ring was stock,lot of carbon.Manage to remove and clean ring.Put everything together and work.Most likely oil was never changed and that did it.Dan
