Chrysler 20 and 30 HP Outboard Motors Service Manual OB 3435, Page 56Get this manual
Subsection
_ REED VALVE ASSEMBLY
GENERAL
This subsection deals with removaldisassemblyrepair and installation of the reed valve
SERVICING
Removal
1Remove carburetor as outlined in Section 2Remove eight (8) screws securing manifold (carburetor adapter) and reed valve assembly to crankcase coverFigure 13Remove reed plates by removing four (4) screws securing reed plates to deflector plate Figure 2
DESCRIPTION
The reed valve is between the carburetor and the crankcase of the motorThe reed valve tim es the injection of the fuelair mixture from the carburetor into the crankcase by opening only when pressure in the crankcase drops to predetermined point on the compression strokeThe reeds are designed to keep contact with the reed plate until pressure changes in the crankcaseReed travel away from the plate is limited by the reed stopWhen crankcase pressure increasesbuilt in spring action of the reeds returns them and holds them against the plate