2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 200Get this manual
POWERHEAD ASSEMBLY IMPORTANT: Make sure that frame is squarely in position and that rod and cap are alignedTest at least three corners of the rod and cap joint with pickJoint must be smooth with no stepLoosen both rod cap screws one-quarter turn Use Torquing Socket, PIN 331638, to tighten rod cap screws in three stages: Apply an initial torque of 40 to 60 inIbs(5 to Nm) to both rod cap screws Torque screws to 14 to 16 ftIbs(19 to 21.7 Nm) Apply final torque of 30 to 32 ftIbs(41 to 43 Nm)
Crankcase
Thoroughly clean and degrease crankcase mating flange of the cylinder block with Cleaning Solvent and let air dry
IMPORTANT: DO NOT allow cleaning solvent to