1974 Johnson 135 HP Outboard Motors Service manual, Page 28Get this manual
3- 10 CHOKE Check the choke for fr ee operationwithout bindingLEAF VALVES aThe importance of keeping the leaves in these valves free from distortion calillot be over-emphasizedReplace any leaf valve assembly which Shows any indication of distortion or damage of leaf stopCheck leaf plate with scale for distortiollbThe leaf is so designed that it maintains constant contact with the leaf plate, and will spring away from the plate when predetermined pressure is exerted against itLeaf travel away from the plate is limited by the leaf stopWhen pressure is removed, the inherent spring action of the segments returns and holds them against the plateAttach the leaf segments and leaf stops to the leaf plates, then examine each leaf carefullyEach leaf must lie flat against the plate with no edges turned up or away Crom the plateSee Figure 3- 16cAttach the leaf plate assemblies to the intake manUoldscrews to specified torque to avoid distortion of the leaf pl atesTighten Choke valves must move freely,
INTAKE MANIFOLD
Figure 3-18 USing new gasket install intake manifold and teaf assembly to powerhead using ten scr ews (two long screws at top)See Figure 3-1 8