| 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) |
