Model	EX21
Type	Air-cooled, 4-cycle, slant single cylinder, OHC, horizontal PTO shaft
Bore x Stroke(mm)	67x 60( 2.64 x 2.36 )
Piston Displacement ml(cu.in.)	211( 12.87 )
Continuous Output kw(PS)/r.p.m.	3.2(4.4)/3000 3.7(5.0)/3600
Maximum output kW(PS)/rpm	5.1(7.0)/4000
Maximum torque N·m/r.p.m. (kgf·m/r.p.m.) (ft·lb./r.p.m.)	13.9/2500 (1.41/2500) (10.26/2500)
Directon of rotation	Counter clockwise as viewed from PTO shaft side
Fuel	Automobile(unleaded)gasoline
Lubricant	Engine oil SAE 10W-30, 20W, 30W
Lubrication	Mechanical splashing type
Lubricationg oil capacity liter(US gal.)	0.6(0.156)
Carburetor	Float type
lgnition system	Transistorised
Spark plug	NGK BR6HS (CHAMPION RL86C)
Governor	Centrifugal flyweight type
Dry weight kg(lb)	16(35.28)
Dimention length x width x height mm(in.)	311x366x335 (12.24x14.41x13.19)