1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 51Get this manual
FUEL SYSTEM Make sure tHat the piston throttle valve is closed fullyand there is no clearance between the throttle link and the valve shaft arm Adjust synchronization by opening or closing the slot in the throttle link
Install new O-ring onto the choke valve Install the spring over the choke cable and connect the cable end to the choke valve Move the choke lever all the way to the right and left and make sure the choke valve operates properly
CARBURETOR INSTALLATION
Connect the air vent and overflow tubes to the four-way joint and three-way joint, then connect the tubes to the carburetor as shownClamp the four-way joint securely