This is the OS MAX-46AX .46 (70cc) glow engine, with 40G carburetor and OS E3070 Muffler.
Replacement for the high-performance OS MAx 46FX with same mounting bolt pattern.

Includes a new low-noise E-3070 muffler and 2-year limited warranty protection.
Includes a lock nut and longer crankshaft with more thread length, for better prop nut engagement and greater pilot safety.

SPECIFICATIONS:

Displacement: 0.455 cu in (7.5 cc)
Bore: 0.866 in (22.0 mm)
Stroke: 0.772 in (19.6 mm)
Practical rpm: 2,000-17,000
Output: 1.65 hp @ 16,000 rpm
Weight w/muffler: 17.2 oz (489 g)
Includes: #A3 glow plug, E-3010 muffler
Requires: glow fuel, prop
Recommended Props: 10.5x6, 11x6-8, 12x6-7