← All engines Outboard · Gas

Yamaha 4-stroke outboard (F70–F300)

90/100 BoatVerdict reliability score (clean condition)

The benchmark for outboard reliability and resale. F150 and F300 routinely run 2,000+ hours with routine service. Top-tier buyer trust — a Yamaha-powered hull sells faster than the same boat on any other brand.

Service and what to check

100-hour service intervals; 10-year/1,000-hour anode and water-pump attention. Saltwater units: check the bus bar and starter solenoid behind the powerhead for corrosion.

Watch usage: above roughly 150 hours/year, this family starts losing reliability points — always weigh total hours against the boat's age, and on any outboard or I/O over a few years old, insist on a compression or leak-down test before money moves.

Looking at a boat with this engine?

The engine is the single biggest reliability and value variable on a used boat. Paste the listing and BoatVerdict scores the engine risk for the exact hours and year you're looking at — plus fair value, red flags, and what to inspect.

Paste a listing, get the verdict →