Repair Clinic and E-Replacement Parts have parts. E Replacement Parts has exploded views of equipment. Stens has a FULL-LINE catalog for ALL kinds of 2 and 4 cycle equipment. It is a VERY good catalog! Amazon has parts in bulk. Get Amazon's 12" hemostat pliers or the 45 degree hemostat pliers to replace fuel lines and filters. Cut lines at a slant to ease installation. Use needle nose pliers to loosen stuck fuel lines. Work them back and forth to loosen. Set the lo mixture for highest RPM's at idle and hi mixture for highest RPM's at full-throttle. Set the idle just until the chain just stops. Amazon has mixture tools individually and in sets.