1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 195Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 195

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1 Install piston ring in appropriate groove on piston using Piston Ring xpander ToolSpre ad rings just enough to slip over piston2C heck piston rings to be sure they fit fre ely in grooveLubricate rin