The Honda EB4000X is a single-phase AC portable generator with 4.0 kVA of maximum power and 3.6 kVA of rated power and 60 Hz of rated frequency. The EB4000X generator is available with 120/240 V rated voltage.
The Honda EB4000X AT (s/n 1000001-1006923) generator used single-cylinder (inclined by 25°) the Honda GX270 gasoline engine (270 cc; 16.5 cu.in.). The engine has an overhead valve (OHV) design. The GX270 uses a recoil starter, horizontal carburetor with butterfly valve and C.D.I.(Capacitor Discharge Ignition). Cylinder bore and the piston stroke are 77.0 mm (3.0 in) and 58.0 mm (2.3 in), respectively. Compression ratio rating is 8.2:1.
The GX270 produced 9.1 PS (6.7 kW; 9.0 HP) at 3,600 rpm of maximum horsepower and 19.5 Nm (1.95 kg·m, 14 ft·lb) of torque.
The Honda EB4000X AT1 (s/n 1006924-9999999) generator used the Honda iGX270 engine with the ECU (electronic control unit) and a self-tuning regulator (STR) governor system.
General information
| Generator Specifications | ||
| Model | Honda EB4000X AT/AT1 | |
| Dimensions (L x W x H): | 1,043 x 706 x 773 mm (41.1 x 27.8 x 30.4 in) | |
| Dry weight | 85.4 kg (188.3 lbs) | |
| AC Rated voltage: | 120V/240V | |
| AC Rated output: | 3.6 kVA | |
| AC Maximum output: | 4.0 kVA | |
| Rated frequency: | 60 Hz | |
| Rated current: | 30/15 A | |
| Fuel tank capacity | 23.5 liters (6.2 US gal, 5.2 Imp. gal) | |
| Honda GX270 engine | ||
| Engine model | Honda GX270 | |
| Displacement | 270 cm3 (16.5 cu-in) | |
| Bore x stroke | 77.0 X 58.0 mm (3.0 x 2.3 in) | |
| Max. horsepower | 9.1 PS (6.7 kW; 9.0 HP) at 3,600 rpm | |
| Max. torque | 19.5 Nm (1.95 kg·m, 14 ft·lb) | |
| Carburetor | Horizontal type, butterfly valve | |
| Cooling system | Forced-air | |
| Ignition system | C.D.I.(Capacitor Discharge Ignition) | |
| Lubricating system | Splash | |
| Starting system | Recoil starter | |
| Stoping system | Ignition primary circuit ground | |
| Fuel used | Unleaded gasoline (octane number 86 or higher) | |
| Honda iGX270 engine | ||
| Engine model | Honda iGX270 | |
| Displacement | 270 cm3 (16.5 cu-in) | |
| Bore x stroke | 77.0 X 58.0 mm (3.0 x 2.3 in) | |
| Max. horsepower | 8.6 PS (6.3 kW; 8.4 HP) at 3,600 rpm | |
| Max. torque | 19.1 N·m (1.9 kg·m, 14.1 ft·lb) at 2,500 rpm | |
| Carburetor | Horizontal type, butterfly valve | |
| Cooling system | Forced-air | |
| Ignition system | C.D.I. (Capacitor Discharge Ignition) | |
| Lubricating system | Splash | |
| Starting system | Recoil starter | |
| Stoping system | Ignition primary circuit ground | |
| Fuel used | Unleaded gasoline (octane number 86 or higher) | |
Honda GX270 engine maintenance data
| Engine | |
| Maximum speed | 3,850 ± 150 rpm |
| Idle speed | 1,400 ± 150 rpm |
| Cylinder compression | 6.0-8.5 kg/cm2 (85-151 psi) at 600 rpm |
| Valve clearance | |
| Intake valve | 0.15 ± 0.02 (0.006 ± 0.001) |
| Exhaust valve | 0.20 ± 0.02 (0.008 ± 0.001) |
| Carburetor | |
| Float height | 13.2 mm (0.52 in) |
| Pilot screw opening | 2 |
| Oil system | |
| Oil type | Honda 4-stroke or an equivalent (SG.SF/CC.CD) |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 1.1 L (1.16 US gal, 0.97 lmp qt) |
| Ignition system | |
| Ignition timing | 20 ° B.T.D.C (Fixed) |
| Spark plug | NGK: BP6ES, BPR6ES NIPPONDENSO: W20EP-U, W20EPR-U |
| Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) |
| Spark plug cap | 7.5-12.5 kΩ |
| Primary ignition coil resistance | 0.8-1.0 kΩ |
| Secondary ignition coil resistance | 5.9-7.1 kΩ |
| Ignition coil air gap | 0.4 ± 0.2 (0.016 ± 0.008) |
Honda iGX270 engine maintenance data
| Engine | |
| Maximum speed: | 3,600±150 rpm |
| Idle speed: | 1,400±150 rpm |
| Valve clearance | |
| Intake valve clearance: | 0.15±0.02 mm (0.006±0.001 in) |
| Exhaust valve clearance: | 0.20±0.02 mm (0.008±0.001 in) |
| Oil system | |
| Lubrication system: | Forced splash |
| Oil type: | Honda 4-stroke or an equivalent (SE or later) |
| Recommended oil: | SAE 10W-30 |
| Oil capacity: | 1.1 L (1.16 US. qt, 0.97 Imp. qt.) |
| Ignition system | |
| Type: | C.D.I.(Capacitor Discharge Ignition) |
| Ignition timing: | B.T.D.C. 10° / 1,400 rpm |
| Spark plug: | NGK: BPR6ES DENSO: W20EPR-U |
| Spark plug gap: | 0.7-0.8 mm (0.0276-0.0315 in) |
| Spark plug torque: | 18 N·m (1.8 kg·m, 13.3 ft·lb) |
| Ignition coil air gap | 0.2-0.6 mm (0.0079-0.0236 in) |
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