SUZUKI STARTER MOTOR 31100-96J01

Function and Technical Context

The starter motor is the electrical component responsible for turning the outboard motor’s crankshaft to initiate the combustion cycle; without it, starting the engine is impossible. It operates within the electrical starting system, receiving power from the battery and transmitting torque to the flywheel’s ring gear via a gear pinion. In medium- and high-power Suzuki four-stroke engines—such as those in the DF150, DF175, DF200, DF225, DF250, or DF300 series—this component is subjected to frequent starting cycles and the demands of the marine environment: humidity, vibration, and temperature fluctuations that accelerate wear. A starter motor in poor condition can prevent you from setting out to sea or leave the boat without propulsion in the middle of an anchoring maneuver.

When should this part be replaced?

The most common symptoms of a deteriorated starter motor are: the characteristic dry “click” when turning the key without the motor turning, slow starting or starting with unusual effort even with a charged battery, and the pinion failing to engage or getting stuck after starting, causing a metallic squeal. On boats used intensively or in environments with high salinity, it is recommended to check the condition of the starter motor during every seasonal maintenance, cleaning the terminals and checking electrical continuity. Replacing the starter motor as a preventive measure at the first signs of trouble avoids dangerous situations at sea and a chain reaction of failures in the starter electrical circuit.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer Part Numbers