1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 54Get this manual
NOTE It gap is too tight, itcan be opened with fileCoat piston pin with oi lApply few drops 01 oi to both piston pin holes in piston and to bearing in connecting rod
R.mblyPow.rhe.dGeneral Not 1Internal parts have close toleranceIt is most important that all parts, the work area, and your hands are clean 2With new or rehoned cylinders, the bores should be thorough ly scrubbed with warm soapy water using round bore brushDry thoroughlyBHeat piston to expand pin holes and ease installation of pinInstall piston pin through piston and rod bearing using punch (Special Tool NoT 8919) and pillow lock (Special Tool No 2990) Fig ure 28
3Follow' torque values closely when tightening
screwsThreads in aluminum castings Bre often damaged by overtightening
Open end of piston pin must be opposite staking pin groovesFigure 28