I recently purchased a used Echo PB 610 backpack blower. It worked fine for a while. Now it does not prime (and so it doesn’t run). When I push the priming bulb it pushes very easily and releases quickly. There’s a lot of air in the bulb. I removed the plastic/rubber bulb itself and that doesn’t seem to be the problem. To test it, I placed the flat surface of the bulb against a flat piece of plastic and pressed it; it stays attached to the plastic. Maybe that’s not a good test? If the bulb is good the next thing I’d suspect are the fuel lines. I have two. One is a larger diameter black rubber hose. The other is a much finer clear plastic tube. I assume one of these is a suction line, and the other a return line. Which is which? Do these things fail very often? And which lines: the external lines or the ones inside the plastic fuel tank? I also assume there is some sort of check valve mechanism in the carb that allows fuel to flow in one direction only. Is that a common point of failure? Do I need to buy a full rebuild kit if that’s all I need? I’ve never worked on a blower before. Any help you can provide is much appreciated. Thanks.

Hi guys, I need to replace my cylinder rings in my Briggs and Stratton V-Twin 16HP engine but I can't tell which part I'm suppose to use because, at least for me, the parts list seems a bit unclear. Model number: 305447-0175-E1. [URL="http://bsintek.basco.com/BriggsDocumentDisplay/18nnxDXKnfBhU7y.pdf."]This[/URL] is the part list. Look on page 22 and at ref no. 26. My engine is before code date 07122400. Any help will be appreciated.