1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 59Get this manual
8Coat dr iveshaft splines liberally with ntiseize ubricant (Special Too NoT 29871) to preve nt corr osion frozen dri veshaft and ifficult removal in the luture NOTE
To rque bolts in seq uence, li st to 75 inIbs (86 kgcm), then increase in increments 01 25 inIbs (27 kg cm)until 130 inIbs(1 49 kg cm) Is eached to avoid warpi ng cylinder headFig ure 44
Figure 44Torquing Sequence for Cylinder HeadCAetor que cylinder head after running engine lor at least 15 minutes and again after approximately 10 hours 10Insta ll transler port gasket and tr ansfer port cover to cylinderwith three (3) screwsTorque to 90 in Ibs(103 kg cm) 11 Instal ation Cylinder drain cover and cylinder drain cover gasket: AInstall gasket on drain cover so that contours match Place gasket and cover on cylinder