12. CARBURETOR VITALITY 50 Screws ACCELERATING PUMP DISASSEMBLY Remove the two accelerating pump cover screws and accelerating pump cover. Remove the spring and accelerating pump diaphragm. Cover Spring INSPECTION Inspect the accelerating pump diaphragm for cracks, damage or deterioration. Replace if necessary. Assemble the accelerating pump in the reverse order of disassembly. Diaphragm Bystarter Screw Bystarter Cap AUTO BYSTARTER INSTALLATION Install the auto bystarter and set plate. Install and tighten the two screws. · Insert the auto bystarter into the carburetor body until it bottoms and position the set plate into the upper groove in the bystarter. · Install the set plate with its round face facing down. Set Plate 12-23