Specifications:

Displacement: 30.5 cc (1.861 cu in)
Bore: 1.42 in (36 mm)
Stroke: 1.18 in (30 mm)
Weight: 2.4 lb (1.10 kg)
RPM Range: 1,600-8,500
Output: 3.7 hp @ 8,500 rpm
Requires: unleaded gasoline, oil, ignition battery & propeller

Includes: electronic ignition, muffler, spark plug, gasket, bolts, machined aluminum standoffs, throttle arm extension & mounting template

Suggested Propellers: 18x8, 18x10, 19x8 & 20x8
Suggested Break-in Prop: 18x8

Technical Data:
Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack (LiPo or LiFe use requires voltage regulator.)
Compression Ratio: 7.6:1
Gas/Oil Mix: 30:1
Replacement Spark Plug: NGK CM6 (DLEG5510) or equivalent
Weight Breakdown: Engine: 32.1 oz (910 g); Muffler: 2.1 oz (60 g); Ignition: 4.2 oz (120g)