1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 251Get this manual
Checking Propeller Hub Slippage9.9 thru 30 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 pattern2Splined shafts, 9.915Install stub arbor into bushing in basePlace propeller on stub arbor and insert spline adapter 20,25,30 Thru HubInstall torque shaft into bushing in basePlace propeller on torque shaft