1984-1986 Mercury Force 4HP Outboards Service Manual, Page 23Get this manual
SECTION
REED VALVE
GENERAL
The information in this subsection covers removaldisassembly, repair and Installation of the reed valv9
Inapectlon and DI .mbly
1Inspect reedsReeds must lie lIat on reed plate without tension (preload), which would restrict air flow, and must not stand open more than .006", which wou ld allow air to be expelled through the carburetorFigure 2