Horsepower and RPM
Johnson outboard 150 engines are capable of producing 150 horsepower. The motor has a minimum wide open throttle of 4,500 rpm and a maximum wide open throttle of 5,500 rpm.
Engine Features
The Johnson outboard 150 engine is made of six cylinders and operates as a two-stroke motor. The gear ratio measures 1.85-to-1, and the engine accepts 15 splines on the propeller hub.
Time Line
These specifications are accurate for Johnson outboard engines between the years of 1991 with the GT150 model, and finishing in 2004. The only exception is the 2001 model, which has four cylinders instead of six.