EXCELLENT POWER THAT RUNS CLEANER!

A win-win engine for any pilot! The O.S. 72FS-a 4-Stroke offers more power in the same footprint as a 70-size - and with an ingenious oil system that boosts performance and virtually eliminates clean-up.

• Precision-machined, bar stock piston, crankshaft, camshaft, conrod and rocker arms
• Durable, heat-treated parts
• Stronger wrist pin, conrod and valve assembly designs to minimize wear and extend life
• Dual bearings, factory-set valves and idle for shorter setup and break-in
• Reversible carb and narrower camshaft for installation ease
• Compact mufflers can be moved in or out and rotated 360°, for more in-cowl options with fewer mods
• Tighter tolerances and ratchet springs help hold settings longer
• O-ring seals on carbs eliminate fuel/air leaks

SPECIFICATIONS
Displacement: 0.72 cu in (11.79 cc)
Bore: 1.063 in (27 mm)
Stroke: 0.811 in (20.6 mm)
Practical rpm range: 2,400-12,500
Output: 1.2 hp @ 11,000 rpm
Weight w/o muffler: 16.8 oz (476 g)
Includes: 61N carburetor, F-5030 muffler, Type F glow plug

                                   Retail
OSMG0877 72FS-a 4-Stroke Engine   $549.99

Visit the O.S. Engines website at www.osengines.com

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