Yamaha F9.9 outboard motors generally weigh between 87 and 93 pounds. Yamaha models F20 and F15 two-cylinder outboard motors typically weigh from 111 to 131 pounds. A Yamaha F90 in-line four-cylinder outboard motor with 25-inch shaft weighs 372 pounds. A Yamaha T60 in-line four-stroke outboard motor weighs 262 pounds.
Yamaha manufactures a variety of portable, mid-range and in-line four-stroke outboard boat motors. Additionally, the company makes and sells high-thrust, jet drive and offshore outboard boat motors. V-MAX PRO is Yamaha's line of outdoor fishing boat motors. Yamaha portable outboard motors come with streamlined intake manifolds, large volume air silencers, water-cooled fuel pumps and labyrinth exhaust systems. Additional features of Yamaha portable outboard motors include acceleration pumps, oil separators and dynamic balancers.
Mid-range Yamaha outboard boat motor features include single- and double-overhead camshafts, multi-function tiller handles and precision multi-point fuel injection systems. Yamaha high-thrust four-stroke outboard motors feature microcomputer starters. High-thrust Yamaha outboard motors come with dual-thrust propellers to increase thrust and reduce ventilation. High-thrust outboards meet all EPA regulations and are three-star rated for ultra-low emissions by the California Air Resources Board as of 2016.
Yamaha outboard motors come with warranties for three years of limited pleasure boat use or for one year of commercial watercraft use.