Yamaha’s newly-designed F350 meets customer demand for horsepower diversity combined with premium-level performance and reliability. Engine block and gearcase upgrades give the new F350 a strong core for powering up and going the distance, while comfort and convenience options create a confident ride. Yamaha has also released new Helm Master EX features.
NEW F350 OFFSHORE
The F350 4.3L V6 outboard boasts larger intake and exhaust valves than the F300 and uses the same diameter electronic throttle valve as the 5.6L V8 XTO®450 to maximize air movement. Better air flow equals more power as the F350’s precisely mapped fuel and ignition timing match operator throttle demand for responsive performance. A new crankshaft offers a longer stroke, enabling more torque at lower speeds. Sync all this power with Yamaha’s Digital Electric Steering (DES) and exclusive Thrust Enhancing Reverse Exhaust, and the new F350 becomes the standard for an exciting boating experience.
With a 11:1 compression ratio, the new F350 manages air displacement using tailored intake manifolds equipped with 40 percent larger surge tanks, as compared to the F300. Identical port and starboard intake manifolds enable the ideal placement for the 81mm electronic throttle valve that is 8 percent larger than the F300 throttle valve and centre-mounted for smooth air flow and responsive power.
Larger intake and exhaust valves and Variable Camshaft Timing (VCT) offer air flow advantage for the new Yamaha F350. The Yamaha F350 also incorporates the use of iridium spark plugs—appreciated for their hardiness and concentrated, efficient spark—combined with Yamaha’s new fuel injection control mapping, which produces a longer injector duration than that of the F300 4.2L for more power.
The new F350 cowling incorporates the best in Yamaha offshore motor advancements with its water-draining air duct, while the new cowling exhaust port combined with the new stator fan keeps everything under the cowling nice and cool. The cooling effect is impactful enough to create more available current for the new F350 over the F300 at all RPMs, especially in the lower RPM ranges.
Used in concert with the Helm Master EX boat control system, Digital Electric Steering (DES) provides clean rigging and extra bilge real estate that offers smooth, responsive steering and easy maintenance. Mirroring smart functionality on the XTO, the F350 has a convenient, flush connection running through a specially designed rigging grommet inside the rigging tube that can be connected to an automatic flushing system. Manual flush is also possible with a separate flushing connection. The F350 also incorporates the same TotalTilt® technology used throughout Helm Master EX capable DEC outboards.
NEW HELM MASTER EX FEATURES
Helm Master EX with integrated bow thruster control is now available for single through quint applications. Yamaha’s integration of Sleipner® and VETUS® bow thruster systems is an on-demand, self-activating feature. It works congruently with the Helm Master EX joystick to enhance lateral movement and pivoting by automatically engaging the bow thruster in variable speed to match operator input.
The bow thruster also automatically supports Setpoint functions (Staypoint®, Fishpoint®, DriftPoint® and DriftPoint track) and can help keep the boat on track when using autopilot functions.
Yamaha’s integrated variable speed bow thruster is only available through boat builder installation on new boats. The integrated bow thruster control is available now for twin and triple applications. Anticipated availability for single, quad and quint applications
Published in print August-December 2025
