Single RINGED piston and cylinder sleeve
Includes the Silent muffler (SUPG1561) with exhaust stack
Two crankshaft ball bearings
One Assembled GS40 Ringed Engine w/Carb.
One Muffler, Gasket, Mounting Nuts, Bolts, Brass Pressure Fitting,
and Exhaust Stack.
One Glow Plug (FOXG1405)
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
Width between centers of mounting holes: 42mm (1.65")
Length between centers of mounting holes: 19mm (.75")
Width of crankcase excluding mounting flanges: 34mm (1.34")
Length from backplate to front of drive washer: 80mm (3.15")
Height from bottom of crankcase to top of head: 84mm (3.31")
Crankshaft size: 1/4-28
Suggested prop size: 9x7, 9x8, 10x5, 10x6, 10x7, 11x4, 11x5
Carb Settings: H-2-turns out from closed position.
L- Take carb off, rotate and look at bottom side.
Turn trottle until wide open, set tip of low end
needle half-way across cat eye.
Fuel with 5%-15% Nitromethane and 17% or greater lubricant content
(all the fuels we carry meet this requirement).
updt jxs 2/12/04
updt lmm 3/26/09
updt jaw 6/26/12