1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 191Get this manual
Reed Blocks NOTE: Do not disassemble re ed block unless necessarySN 0G380075Above
R ed should lie flatThere should be no pre-load (pressure betwe en re ed and re ed-block), although slight pre-load is tolerableThe maximum allowable opening betwe en re ed and re ed-block is .020 in(0.5mm)This must be checked with flat blade fe eler gauge, as shownIf the opening exce eds .020 in(0.5 mm), or if the re ed is chipped, cracked or otherwise damaged, replace