Sailing Zephyr · video

What this video covers

The crew of the sailboat Zephyr replaces their 9.8-horsepower two-stroke outboard with a new 15-horsepower Yamaha four-stroke motor for their Highfield tender.4:08 The new engine weighs 111 pounds, nearly double the weight of the previous unit, and requires a specific break-in period of 10 hours, with a limit of 2,000 RPMs for the first hour.11:30 Commissioning involves adding 1.5 liters of 10W-40 engine oil, installing a new six-gallon fuel tank, and verifying the fuel line directionality via the integrated arrow on the primer bulb.10:57 During installation, the crew confirms the motor’s trim tab sits approximately three-quarters of an inch below the transom, which provides optimal height for the tender.28:37 Test runs demonstrate significantly improved low-end torque and planing capability compared to the previous motor, even when carrying two dogs and additional weight.23:42 The crew notes that the heavier motor is difficult to mount manually and recommends using the boat's davits for future removal or installation.21:11

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