Chrysler 6, 7.5, 180 Sailor Outboard Motors Service Manual, OB 3330, Page 42Get this manual
Subsection
_ REED VALVE ASSEMBLY
GENERAL
The information in this subsection involves the removal disassembly, repair and installation of the reed valve Disassembly and InspectionInspect reeds Reeds must lie flat on reed plate without tension (preload)which would restrict air flowor stand open more than .012" (0.305 mm), which would allow air to be expelled through the carburetorFigure 29 REED STOP
DESCRIPTION
The reed valve is located between the carburetor and the crankcase of the motorTh reed valves time the injection of the fuel mixt ure from the carburetor into the crankcase by opening only when the pressure in the crankcase has dropped to predetermined point on the compression stroke The reeds are so designed that they maintain constant contact with the reed plate until pressure changes within the crankcase occurLeaf travel away from the plate is limited by the reed stopWhen crankcase pressure increasesthe inherent spring action of the reeds returns and hold it against the plate