Chrysler 25 and 30 HP Outboard Motors Service Manual OB 1894, Page 7Get this manual
SECTION 11- ENGINE SPECIFICATIONS
30 H.P5000 4500-5500
Horsepower, BIARated Recommended Operating Range EngineTwo Cycle Bore and Stroke Cubic Inch Displacement Cooling
5000 4500-5500
Twin Cylinder Alternate Firing
2316"x2.300" 28.57 CuIn
Twin Cylinder Alternate Firing
2316"x2.414" 29.99 CuIn
Water Cooled Displacement Type Water Pump Aluminum Alloy 12" Dia, 10" Pitch, Right Hand Rotation, Spline Drive, Blade Champion
Water Cooled Displacement Type Water Pump Aluminum Alloy 10 38" Dia, 13 12" Pitch, Right Hand Rotation, Spline Drive Blade Champion L4J