ARCO Marine Johnson/Evinrude Outboard Starter - Small 10 Tooth

The ARCO Marine Johnson/Evinrude Outboard Starter – Small 10 Tooth (MPN 5372) is a direct-replacement marine electrical component designed for BRP-OMC outboard engines in the 85–140 HP V4 range. Built to restore reliable cold-weather and hot-weather engine cranking, this starter serves recreational boaters, charter operators, and commercial fishing vessels that depend on consistent ignition performance in demanding saltwater and freshwater environments. Like quality tactical equipment, marine starters demand precision engineering because failure at sea poses genuine operational risk.

This unit features a small 10-tooth drive gear that engages the engine flywheel with minimal backlash and maximum torque transfer during the critical first rotation. The starter's internal solenoid mechanism amplifies battery current to produce the high amperage draw necessary for engine rotation, while internal brushes and commutators convert electrical energy into smooth mechanical output. ARCO specifies that a fully charged 12-volt battery is essential—a weak or undercharged battery can permanently damage both the starter windings and solenoid contacts through sustained high-current draw. Pre-installation connection cleaning prevents corrosion-induced voltage drop that degrades cranking force.

This replacement starter is ideal for operators experiencing slow or failed engine starts, intermittent cranking, or complete starter failure on Johnson and Evinrude four-cylinder outboards. Proper installation requires matching the 10-tooth pinion to your engine's flywheel ring gear and securing all battery leads with corrosion-resistant terminals. Weighing 7 pounds and measuring 5 × 5 × 12 inches, the unit fits standard mounting locations on compatible V4 outboard blocks. Verify your engine's exact horsepower and model year before ordering to ensure pinion compatibility with your engine's starter ring gear configuration.