2001-2003 Honda TRX500FA Factory Service Manual, Page 92Get this manual
FUEL SYSTEM Remove the va cuu chamber cover, co mpression sp ring and diaphragmvacuum piston rom the carb u-
ret or body
Be careful noto dcmage the d,aphragm
Turn the needle ho lde counterclockwise by using screwdri ver while pressing it in and release th ho ld er flange fr om th vacuum piston Rem ove he need le holdersp ri ng, jet need le and washe r
NEEDLE HOLDER