Honda EMS4000

Honda EMS4000The 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
ModelHonda EMS4000
Dimensions (L x W x H):650 x 425 x 575 mm (25.6 x 16.7 x 22.6 in)
Dry weight85.0 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 capacity16.5 liters (4.4 US gal, 3.6 Imp. gal)
ModelHonda GE400 (G400)
Displacement406 cm3 (24.8 cu-in)
Bore x stroke86.0 x 70.0 mm (3.4 x 2.76 in)
Max. horsepower10.1 PS (7.4 kW; 10.0 HP) at 3,600 rpm
Rated power23.0 N·m (2.3 kg·m, 17 ft·lb)
CarburetorHorizontal type, butterfly valve
Cooling systemForced-air
Ignition systemCDI
Lubricating systemSplash
Stoping systemIgnition primary circuit ground
Fuel usedUnleaded 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
Spark plug:NGK: BP4HS-10, BPR4HS-10 ND: W14FPR-UL1O
Spark plug gap:0.9-0.10 mm (0.035-0.039 in)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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