2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Manual, Page 142Get this manual
POWER UNIT CYLINDERCRANKSHAFTPISTON 6Assemble the crankcaseTighten the crankcase bolts to the specified torque in the indicated order
Crankcase bolt: mm mm 14 Nm (1.4 kg-m, 10.0 Ib-ft) 25 Nm (2.5 kg-m, 18.0 Ib-ft)
7Disassemble the crankcase
8Measure the compressed plastigauge width at its widest point
CrankshaftBearingCrankcase Combination