Fixing and Swapping Your Evinrude 150 Lower Unit

If you've noticed your boat isn't picking up speed like it used to, or maybe there's a weird vibration coming from the back, it's probably time to take a look at your evinrude 150 lower unit. Most boaters call it the gearcase, and it's basically the legs of your outboard motor. It takes all that power from the engine and turns it into thrust by spinning the prop. But because it spends its entire life submerged in water—often hitting sand, rocks, or tangled fishing lines—it's usually the first thing to break down. ...

May 20, 2026 · 6 min · Pierre Pertsinidis