2017 Yamaha F250 4.2L Offshore Mechanical Outboard Motor

This cable-and-lever 2017 outboard pairs the same 250-hp, 4.2-liter V6 block with a 50-amp alternator, settling at 551 lbs of dry weight on its 25-inch shaft, suited to boats already set up with mechanical steering rather than a digital console.

Why this configuration

Match this trim to an existing binnacle and steering cables; a boat with no prior digital wiring generally comes out ahead choosing mechanical here rather than paying to add a digital helm from scratch. Trim on this version runs from -3 to +16 degrees.

Saltwater notes

A water-cooled rectifier/regulator and sacrificial anodes back up long-term durability for a motor that lives on salt water, while gear ratio comes in at 1.75:1 and starting is electric. Expect 6.3 liters of oil with the filter installed, 6.0 without it, and a compression ratio of 10.3:1 on this block. Owners running this trim hard offshore tend to rinse the lower unit's cooling passages after every outing, and a yearly gearcase oil change is cheap compared with a lower-unit rebuild.

Coverage runs three years apiece for pleasure and government buyers on this engine; commercial buyers get a single year. Confirm your lever and cable rigging with us before ordering, and ask us about a matched prop if one wasn't quoted with this engine, since fit varies with gear ratio, boat weight, and how the hull is typically loaded.