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Tech. Specs.

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MLG20 Diesel Generator

Affordable Mid-Sized Power

The MLG20 diesel generator provides affordable, single phase power with just the right combination of hardworking output and efficiency.



  • Full tubular steel, lockable enclosure
  • Durable, fade resistant, white baked on powder coat finish
  • Stainless steel hinges, exterior hardware and pad lockable door latches


  • CSA Certified
  • Key switch to preheat (glow plugs), start & stop
  • Automatic low oil/high temp shutdowns
  • 100 Amp start limit main breaker
  • 2 year - 2,000 hour warranty
  • Marathon voltage regulation within +/- 1%

Easy to Use

  • Self-priming 4 cylinder Isuzu engine
  • Six external convenience outlets with Individual breakers
  • Externally emergency stop switch
Warranty Responsibility: It is the responsibility and obligation of the purchaser to thoroughly read and understand the Magnum warranty prior to purchasing equipment. Failure to read and comprehend the warranty policy does not expose Magnum to any liabilities over and above the stated warranty bond. If you have any questions or need clarification of warranty details please contact or call technical support at 800.926.9768.



3 Phase - Standby kW (kVA) N/A
Amps 480V (208V) N/A
3 Phase - Prime kW (kVA) N/A
Amps 480V (208V) N/A
1 Phase - Standby kW (kVA) 20.0 (20.0)
Amps 240V 83
1 Phase - Prime kW (kVA) 19.0 (19.0)
Amps 240V 79
AC Voltage 1-phase 120, 240
AC Voltage 3-phase N/A
Frequency Hz 60
Power Factor 1.0 (1 Phase)
Generator - Brand / Type / Insulation Marathon / Brushless / F
Sound (dB(A) 23 ft @ prime) 70

Size and Weight

Skid Mounted - L x W x H in (m) N/A
Dry Weight lbs (kg) N/A
Operating Weight lbs (kg) N/A
Trailer Mounted - L x W x H in (m) 105 x 68 x 56
(2.67 x 1.73 x 1.42)
Dry Weight lbs (kg) 1471 (667)
Operating Weight lbs (kg) 1761 (799)


Type Tier IV
Brand Isuzu
Aspiration Turbo
Power - Prime @ 1800 rpm hp (kWm) 36.2 (27.0)
Displacement cubic in (L) 133 (2.18)
Cylinders 4
Speed rpm 1800
Fuel Consumption - Prime gph (Lph) 2.1 (7.8)


Fuel Tank gal (L) 50 (190)
Approximate Run Time hrs 24
Coolant qt (L) 12 (11.3)

Electrical Distribution

Battery - 12V 1 - 12V 720 CCA Wet Cell
Main Circuit Breaker Size A 100
Voltage Selection N/A
Voltage Regulation +/-1%
120V - 20A GFI Duplex Outlets - qty 2
240V - 30A Twist Lock Outlets - qty 2
240V - 50A Twist Lock Outlets - qty 2


Number of Axles 1
Capacity - Axle Rating lbs (kg) 2200 (998)
Tire Size in 15
Brakes N/A
Hitch 2" Ball
Maximum Tire Pressure psi 50


Powertrain (Engine/Gen) 60/40 Coolant
Heated Fuel Filter
Engine Heater - Lower Radiator Hose
Oil Drain Valve Kit
Controls Battery, 720 CCA Gel Cell
Battery, 685 CCA Gel Cell
No Battery
Battery Disconnect
Battery Charger
Alternative Outlet Panel
Cabinet/Fuel Tank Interior Cabinet Light
Level Indicator
56 Gallon Fuel Tank
Fuel Tank Cap - Vent w/ Lanyard
Spare Tire & Carrier
Lift Structure
Liquid Containment/Quiet Pack
Trailer Tube & Sleeve Jack
Combo Hitch - 2.5" Ring/2" Ball
2.5" Ring
3" Ring
3" Ring (1.625 TH)
Plug Adapter, 4 Flat to 6 Round
Plug Adapter, 4 Flat to 7 Pin
Plug Adapter, 4 Flat to 7 Round Spade
Outrigger Package

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