I am trying to replace the rubber primer pump for the above trimmmer. I have dismantled the unit and can see it is a ZAMA carby. The carburetor assembly part number shown in the owner's manual is A-07139. I also noticed that both the fuel lines from the carby to the fuel tank are perished and the fuel filter is loose inside the tank. Where the fuel lines enter the tank there seem to be some washers or connectors missing. Are replacment pipes and connectors available for these also?