Dan, the Poulan website does not show the PP4620AV parts list but it does show a PP4620AVX which is the later toolless bar adjust model. They use the same oiler assembly as the Husqvarna 41, 141, and 141LE. If I were in your shoes I'd take off the clutch cover, clutch, and oiler and see if the snap together oiler pickup seal was leaking. If I remember correctly the PP4620AV is the older PP295 but with the helper spring in the starter. If you go to ordertree.com you can look up the IPL for the PP295. This type oiler pumps oil whenever the engine is running.