The EMS4000 is AC/DC portable generator with 3.8 KVA of rated power, 4.0 KVA of maximum output power and 60 Hz of rated frequency. The EMS4000 generator is available with AC 120V/240V rated voltage. The direct current terminals can be used for charging 12-volt automotive-type batteries only up to 8.3A.
The Honda EMS4000 generator used the Honda GE400 single-cylinder gasoline engine with 406 cm3, (24.8 cu·in) of displacement. The engine has a side-valve (L-head) design, a splash-type lubrication system, a horizontal carburetor with a butterfly valve, and CDI ignition systems. The GE400 has an 86.0 mm (3.39 in) cylinder bore and 70.0 mm (2.76 in) piston stroke. The compression ratio rating is 6.8:1.
The engine produced 10.1 PS (7.4 kW; 10.0 HP) at 3,600 rpm of maximum horsepower and 23 N·m (2.3 kg·m, 17 ft·lb) of peak torque.
General information
| Generator Specifications | ||
| Model | Honda EMS4000 | |
| Dimensions (L x W x H): | 650 x 425 x 575 mm (25.6 x 16.7 x 22.6 in) | |
| Dry weight | 85.0 kg (187.4 lbs) | |
| AC Rated voltage: | 120V/240V | |
| AC Rated output: | 3.8 KVA (32.0/16.0 A) | |
| AC Maximum output: | 4.0 KVA | |
| Rated frequency: | 60 Hz | |
| DC output: | Only for charging automotive battery of 12V up to 8.3A | |
| Fuel tank capacity | 16.5 liters (4.4 US gal, 3.6 Imp. gal) | |
| Engine | ||
| Model | Honda GE400 (G400) | |
| Displacement | 406 cm3 (24.8 cu-in) | |
| Bore x stroke | 86.0 x 70.0 mm (3.4 x 2.76 in) | |
| Max. horsepower | 10.1 PS (7.4 kW; 10.0 HP) at 3,600 rpm | |
| Rated power | 23.0 N·m (2.3 kg·m, 17 ft·lb) | |
| Carburetor | Horizontal type, butterfly valve | |
| Cooling system | Forced-air | |
| Ignition system | CDI | |
| Lubricating system | Splash | |
| Stoping system | Ignition primary circuit ground | |
| Fuel used | Unleaded gasoline (octane number 86 or higher) | |
Maintenance data
| Cylinder compression: | 5.3 kg/cm2 (75 PSI) at 800 rpm |
| Valve clearance | |
| Intake valve clearance: | 0.08-0.16 mm (0.0031-0.0063 in) |
| Exhaust valve clearance: | 0.11-0.19 mm (0.0043-0.0075 in) |
| Oil system | |
| Lubrication system: | Splash type |
| Oil type: | SAE 10W-40 |
| Recommended oil: | Honda 4-stroke “SE” |
| Oil capacity: | 1.2 L (1.27 US. qt, 1.06 Imp. qt.) |
| Fuel system | |
| Type: | Horizontal carburetor with butterfly valve |
| Main jet: | #102 |
| Float height: | 8.6 mm (0.3386 in) |
| Pilot screw opening: | 2 turns out |
| Ignition system | |
| Type: | CDI |
| Spark plug: | NGK: BP4HS-10, BPR4HS-10 ND: W14FPR-UL1O |
| Spark plug gap: | 0.9-0.10 mm (0.035-0.039 in) |
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