1977 Johnson 2HP Outboards Service Manual, Page 24Get this manual
3-7 The leaf is so designed that it maintains constant contact with the leaf plate until predetermined pressure is exerted against itLeaf travel away from the plate is limited to 1 4" (6.35 the leaf backplateWhen pressure is removed, the inherent spring action of the leaf segments returns and holds them against the plateAttach the leaf segments and leaf stops to the leaf plate, aligning leaves with marks plateSee Figure 3-10Apply Screw Lock to leaf valve screw threads and tighten to torque specified in Section to avoid distortion of the leaf plate DO NOT lift or bend leaf segments them so that the leaves would have to
handThis replaced
dExamine each leaf carefullyEach leaf must lie flat against the plate with edges turned or away from the plate
FOLLOWER STARBOARD ROUNDED EDGE
REASSEMBLY OF LEAF VALVES, INTAKE MANIFOLD, AND CARBURETOR MOTOR
Place new gaskets between the leaf plate, intake manifold, and crankcase, and attach to crankcase with four screwsUsing new gasket, place carburetor in position and fasten in place with nuts Adjust throttle belowmanifold studs