1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 24Get this manual
SECTION
REED VALVE
GENERAL
The information this subsection cover removaldIsassembly, repai and installation of the reed valve
and Dlaa embly1Inspect reedsReeds must lie lIat reed plate ithout tension (preload), which would restrict air lIow, and must not stand open more than .006"which would allow air to be expelled th ough the ca rburetorFigure 2REEO STOP
DESCRIPTION
The reed valve is located between the carbur etor and the crankcase The reed valves time the injection of fuel mixture from the carburetor into the crankcase by opening when pressure in the crankcase has dropped to predetermined point on the compression strokeThe reeds are designed to maintain constant contact with the reed plate until pressure changes in the cr ankcaseAeed travel away from the plate is limited by the