1970 Johnson 1.5 HP Outboard Motor Service Manual, Page 22Get this manual
3-7 LEAF VALVES of keeping the leaves in these valves free from distortion cannot over-emphasizedReplace leaf or leaf back-up plate which shows indication of distortion or damageleaf is so designed that it maintains contact with the leaf plate until predetermined pressure is exerted against itLeaf travel away from the plate is limited to 14" the leaf back-up plateWhen pressure is removed, the inherent spring action of the leaf segments returns holds them against the plateAttach the leaf segments leaf stops to the leaf plate, aligning leaves with marks plateSee Figure 3-10plate with leaf carefullyleaf must lie flat against the edges turned or away from the plateNOTE DO NOT lift or bend leaf segments them so that the leaves would have to This replaceddamage
dTighten screws to torque specified in Section to avoid distortion of the leaf plate
REASSEMBLY OF
AND LEAF VALVES
crankcase, and studs
Place new gasket between the intake attach to crankcaseUsing new gasket, place carburetor in position fasten in place with nutsReconnect fuel line to carburetor