11. FUEL SYSTEM STRYKER 125/150 ASSEMBLY Vacuum Chamber Cover Install the vacuum piston/diaphragm in the carburetor body. Install the spring and then install the vacuum chamber cover. Tighten the two screws. · Be careful not to damage the diaphragm. · Hold the vacuum piston while tightening the vacuum chamber cover. Vacuum Diaphragm FLOAT CHAMBER Screws DISASSEMBLY Remove the three float chamber screws and the float chamber. Float Chamber Loosen the float pin screw. Float Valve Float Remove the float pin, float and float valve. Float Pin 11-9