ENGINE TYPE: single cylinder, four stroke, forced air cooling, overhead valve
CYLINDER BORE × STROKE (MM): 88 × 64、90 × 66、92 × 69
IDLE SPEED (RPM): 1440 ± 140
COMPRESSION RATIO: 8.5:1, 8.8:1, 8.8:1
VALVE CLEARANCE (MM): intake valve 0.10 ~ 0.15 / exhaust valve 0.15 ~ 0.20
SPARK PLUG GAP (MM): 0.7 ~ 0.8
FUEL CONSUMPTION RATE (G / KW. H): ≤ 374
OIL CAPACITY (L): 1.1
STARTING MODE: manual / electric start
LUBRICATION METHOD: splash lubrication
IGNITION MODE: transistor ignition
ROTATION DIRECTION: counterclockwise (viewed from the output shaft end of Crankshaft)

Parameter Name	Parameter Value
Type	gasoline
Number of cylinders	single-cylinder
Technology	overhead valve
Cooling system	air cooling
Other characteristics	4-stroke
Power (W)	7600 - 7600 8300 - 8300 8800 - 8800
Torque (Nm)	21 - 52
Rotational speed (rpm)	1800 - 1800
Displacement	390 cm³, 420 cm³, 460 cm³ (13.187 US fl oz)
Tank volume	6 l (1.6 gal)
Weight (kg)	Min.: 28
Length (mm)	475 - 475
Width (mm)	440 - 470
Height	510 mm (20.1 in)