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Husqvarna

Husqvarna Autotune Chain Saw
Husqvarna's latest innovation makes the operation and maintenance of its two-stroke engines a new game and raises the bar for high-performance chain saws. Though they can be tricky to adjust, two-strokes must be kept in tune to maintain peak performance. The high-tech 576 XP AutoTune professional chain saw has a sensor that monitors the engine's combustion 20 times per second and adjusts the fuel-air mixture as needed to accommodate different gasoline octane ratings or blends, a clogged air filter, or changes in altitude and temperature. Husqvarna has so much confidence in this system, the carburetor doesn't even come with high and low jet-adjustment screws. The result? A 73.5-cc 5.7-hp chain saw that – says the maker – delivers reliable high performance and very low emissions. And the company plans to include Autotune technology in every new professional saw it develops. Husqvarna 576 XP AutoTune: $860. 800-487-5951. www.husqvarna.com.