1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 54Get this manual
Checking Propeller Hub Slippage All Models The propeller torque fixture is used to detect slippage between the propeller and hub1There are two sets of holes for mounting the propeller stops to the base and bushing assemblyThe inner hole pattern is used for current outboard models through the 30 modelsInstall the propeller stops in the inner hole patternf12l 2Splined shafts, 9.915, 28SPL, 25RWInstall stub arbor into bushing in basePlace propeller on stub arbor and insert spline adapter 20-30 Thru HubInstall torque shaft into bushing in basePlace propeller on torque shaftf13l 3All modelsInstall correct socket on torque wrenchSelect the torque value for the model being checked from the torque column on chartThe propeller hub should not slip when the wrench is held at the specified torqueModels 9.9-15, 28SPL, 25RW 20-30 Thru Hub Adapter 327633 327630 Minimum Torque 100 ftIbs(135 Nm) 150 ftIbs(200 Nm)