Model GX160 GX200 GX390

Engine Type Air-cooled 4-stroke OHV Air-cooled 4-stroke OHV Air-cooled 4-stroke OHV

Bore x Stroke 68 X 45 mm 68 X 54 mm 88 X 64 mm

Displacement 163 cm3 196 cm3 389 cm3

Net Power Output* 4.8 HP (3.6 kW) @ 3,600 rpm 5.5 HP (4.1 kW) @ 3,600 rpm 11.7 HP (8.7 kW) @ 3,600 rpm

Net Torque 7.6 lb-ft (10.3 Nm) @ 2,500 rpm 9.1 lb-ft (12.4 Nm) @ 2,500 rpm 19.5 lb-ft (26.4 Nm) @ 2,500 rpm

PTO Shaft Rotation Counterclockwise (from PTO shaft side) Counterclockwise (from PTO shaft side) Counterclockwise (from PTO shaft side)

Compression Ratio 9.0 : 1 8.5:1 8.2:1

Lamp/Charge coil options 25W, 50W / 1A, 3A, 7A 25W, 50W / 1A, 3A, 7A 25W, 50W / 1A, 3A, 10A, 18A

Carburetor Butterfly Butterfly Butterfly Float Type

Ignition System Transistorized magneto Transistorized magneto Digital CDI with variable timing

Starting System Recoil Starter Recoil Starter Recoil/electric

Lubrication System Splash Splash Splash

Governor System Centrifugal Mechanical Mechanical Centrifugal Mass Type

Air cleaner Dual Element Dual element Dual element

Oil Capacity 0.61 US qt. (0.58 L) 0.63 US qt (0.6l) 1.16 US qt (1.1 L)

Fuel Tank Capacity 3.3 U.S. qts (3.1 liters) 3.3 U.S. qts (3.1 liters) 6.4 U.S. qts (6.1 liters)

Fuel Unleaded 86 octane or higher Unleaded 86 octane or higher Unleaded 86 octane or higher

Dry Weight 33 lbs. (15.1 kg) 35 lbs. (16.1 kg) 69 lb (31.5 kg)