There is a pumped volume adjustment screw located near the rear case bottom and the lower part of the chain. Turn CCW somewhat to increase volume. Be sure to clean the bar oil passages including the two small channels that run from the large holes out to the chain groove on each side. Clean the entire groove. When everything is back together, run the saw at speed with the bar tip near a piece of cardboard--it should throw off a thin line of oil after several moments. Hope this helps!