1971 Evinrude Fisherman 6HP outboards Service Manual, Page 43Get this manual
ring groove for evidence of tightness or binding by rolling the ring around the piston ring grooveSee Figure 5-18Check for groove side clearance with feeler gageSee Figure 5-19Correct gap and side clearances are given in Section 2 and free from dirt and gritPerfectly good cylinder walls, pistons and rings can be ruined in few minutes of operation unless all forms of grit are removed before assemblyWork in clean surroundings and with reasonably clean handsCoat all bearing surfaces, cylinder walls, etc with clean oil before assemblyNOTE Always use new gaskets throughout when reassembling the power headApply Sealer No4 to both sides of exhaust cover and cylinder head gaskets
PISTONS, WRIST PINS, AND CONNECTING RODS
aThe relative pOSitions of pistons and connecting rods must be considered when assembling pistons to rodPistons must be installed in cylinders with intake side of deflector toward intake portSee Figure 5-20 Oil hole in connecting rod must be toward top of motorSee Figure 5-21bApply coat of oil to wrist pin, making sure surface is cleanPlace drop or two of oil in each pin hole in the piston