11. FUEL SYSTEM STRYKER 125/150 Remove the two screws attaching the air Spring cut-off valve. Remove the spring and vacuum diaphragm. Check the vacuum diaphragm for cracks or damage and check each passage for clogging. Screw Cover O-ring ASSEMBLY Install the vacuum diaphragm onto the carburetor. Install the spring and air cut-off valve cover. Install the throttle cable set plate and tighten the two screws. · Be sure to set the vacuum diaphragm lip into the groove on the carburetor. · When installing the air cut-off valve cover, make sure that the vacuum diaphragm is properly installed. VACUUM CHAMBER Screws DISASSEMBLY Remove the two vacuum chamber cover screws and the cover. Vacuum Chamber Cover 11-7