2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Manual, PN 5005483, Page 141Get this manual
POWERHEAD ASSEMBLY Tighten forcing screw until jaws necting rod Slide frame down until adjustment the connecting rodThe groove jaws must be centered on the diametercontact constop contacts lines on the rodlcrankpin Apply final torque of 30 to 32 ftIbs(41 to 43 Nm) in two alternate increments to both rod cap screwsLoosen forcing screw and remove the frameRepeat steps for remaining connecting rod Thoroughly clean and degrease crankcase mating flange of the cylinder block with Cleaning Solvent and let air dry
Tighten the forcing screw to torque of 23 inIbs(2.5 Nm)
Apply Locquic Primer to the mating flange of the crankcase and let air dryApply Gel-Seal I to the crankcase mating flange of the cylinder blockThe application must cover the flange evenly and consistently without being excessiveThe application must not come within 14 in(6.4 mm) of labyrinth seals or main bearings