1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 73Get this manual
t1AdjsutmentLower gear shift rod : AShift into neutral mounti ng surface of upper gear housi ngHole sho uld be 316"364" (4.75 mm1.19 m) below su rfaceFigure 33Flared Indented end should face rear starboard hole of upper gear housing 311 6" 364"
Secure gear housi ng to motor leg with hex head screwsRefill with gear lubeBMeasur from iddle of hole in rod to top
2Pressure testGear Housing: ARemove vent pl ug fro lower, starboard side of gear housing
BThr ead adapter of pressu tester into vent hole on gear housing and tighten securely (Special Tool NoT8950)CPressureize housing to 10 p.s .iand observe gauge for five minutesIf pr essure dropsimmer se housing in water and repressurize (10 .I
CAUTION