this is the parts book that i found . they are all listed to witch engine they fit or work... main nozzle and jet pilot is what i cand see...
Checked the specs o_O the jets seem to be the only different pieces that could affect the power (screw's dont count). i dont know what else to...
hello my name is alex and i am the owner of an 4 hp 2 stroke yamaha (1991-2000)and was wondering if a simple carburetor change can boost it to 5...