1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 52Get this manual
FUEL SYSTEM Install the carburetor cover Install the carburetor by aligning its intake pipe boss with the insulater grooveTighten the insulator band screw securely
Install the choke valve and tighten the valve nut
Install the carburetor connecting tube and tighten the tube bands