*** 3-YEAR Warranty ***
Single RINGED piston and cylinder sleeve Includes the Silent muffler (SUPG1561) with exhaust stack Schnuerle porting Twin-needle carburettor One-piece crankcase Two crankshaft ball bearings.
One Assembled GS40 Ringed Engine w/Carb. One Muffler, Gasket, Mounting Nuts, Bolts, Brass Pressure Fitting, and Exhaust Stack. One Set of Instructions, Parts List, and Decals.
Bore: 21.5mm (.846")
Stroke: 17.8mm (.701")
Weight w/o muffler: 372g (13.05oz)
Weight with muffler: 541g (19.1oz)
RPM Range: 3,000-17,000
Displacement: .39 cu in. (6.46cc)
Power Output: 1.15 BHP at 15,500 RPM
Suggested prop size: 9x7, 9x8, 10x5, 10x6, 10x7, 11x4, 11x5 Break-in: 10x6