1965 Evinrude 90 HP StarFlite Service Manual, PN 4206, Page 54Get this manual
REASSEMBLY OF POWER HEAD Proceed slowlyMake no forced assemblies unless press fits are called for and make no "dry" assembliesBe sure all parts to be assembled are clean and free from dirt and grit Perfectly 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 hands Coat all bearing surfaces, cylinder wallS, etc, with clean oil before assembly
Figure 5-28Checking Ring Groove Clearance NOTE Always use new gaskets throughout when reassembling the power headPISTONS, WRIST PINS, AND CONNECTING RODS aThe difference between port and starboard cylinders must be considered when assembling pistons to rodsPistons must be installed in cylinders with straight side of deflector toward intake portOil hole in wrist pin end of connecting rod must be toward top of motorSee Figure 5-29bApply coat of oil to wrist pin, making sure surface is cleanPlace drop or two of oil in each pin hole in the piston