| MODEL |
GX390K1 |
| Type |
4-stroke,
overhead valve single cylinder , inclined by 25° |
| Total
Displacement |
389 cm³ (23.7
cu in) |
| Bore &
Strike |
88 x 64 mm
(3.5 x 2.5 in) |
| Max Horsepower
(Gross) |
9.7 kw / 3,600
min–¹ (13HP / 3,600 rpm) |
| Max Torque
(Gross) |
Crank P.T.O |
27 N·m (2.7 kgf·m, 20
lbf·ft) 2,500 rpm |
| with 1/2
reduction |
54 N·m (5.4 kgf·m, 39
lbf·ft) 1,250 rpm |
| with 1/6
reduction |
162 N·m (16.2 kgf·m, 117
lbf·ft) 420 rpm |
| Compression
Ratio |
8.0: 1
|
| Fuel Consumption |
313 g/kWh (230
g/HPh, 0.51 lb/HPh) |
| Cooling System |
Forced-air |
| Ignition System |
Transistorized
magneto ignition |
| Ignition Timing |
25° B.T.D.C
(fixed) |
| Spark Plug |
BPR6ES (NGK),
W20EPR-U (DENSO) |
| Carburetor |
Horizontal
type, butterfly valve |
| Air Cleaner |
Dual element
type
Oil bath type
Cyclone type |
| Lubricating System |
Splash |
| Oil Capacity |
1.1 lt 1.16 US qt, 0.97 Imp qt)
|
| Starting System |
Recoil or
electric start |
| Stopping System |
ignition
primary circuit ground |
| Fuel Used |
Automotive
unleaded gasoline (minimum 86 pump octane) |
| Fuel tank
capacity |
6.5 lt (1.72
US gal, 1.43 imp gal) |
| Reduction oil
capacity |
1/2, 1/6
reduction |
Lubricated from engine
crankcase |
| P.T.O. Shaft Rotation |
Counterclockwise (viewed from P.T.O. side) |
