Slow-Speed Kohler 5,500 Watt Propane/Natural Gas Generator

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Slow-Speed Kohler 5,500 Watt Propane/Natural Gas Generator - This innovative, slow-turning generator (longer life, better fuel economy!) is suitable for standby or continous use and has plenty of power to run your home, job site or business. This unit features a 15 HP Kohler Commnad CH15 engine and with its slow-speed design (only 2200 RPM!) has lower sound levels, bettery fuel economy and longer service life then the higher-speed (3600 RPM) alternatives. This unit is propane and natural gas fueled and features a cast iron cylinder liner, hydraulic valve lifters, electric starting, low oil pressure shutdown, full pressure lubrication w/ spin-on oil filter, critical-type exhaust silencer, brushless generator head (maintenance-free!), dual element air filter w/ foam pre-cleaner, easy access oil fill/dipstick, two year warranty, steel skid base w/ vibration isolators for low noise and vibration and a sound level of only 73 dB(A).

Battery Charging Applications
For battery charging applications, we recommend upgrading to a heavy-duty 4 pole generator end.

Reactive electrical loads, like battery charging, have a poor power factor and actually increase loading on the generator.

A heavier, 4 pole design will prevent straining on the generator and brown-outs caused by low voltage.

Model Number 04589
Electrical Specifications MLS4-Y
Power Single-Phase ---
Maximum Output 6,000 watts
Continous Output 5,500 watts
Load Amperage at 120 volts ---
Maximum Load 50 Amps
Continous Load 45.8 Amps
Load Amperage at 240 volts ---
Maximum Load 25 Amps
Continous Load 22.9 Amps
Sound Level @ 23 ft(7 m) at full load 73 dB(A)

Model Number 04589
Engine -
Type Kohler Command CH15
Power 15 HP
Operating RPM 2200 RPM
Oil Capacity Approx. 2 Qts
Low Oil Shutdown Standard
Cylinder Block Cast Iron Cylinder Liner
Displacement 426 cc
Bore & Stroke 3.55" x 2.64"
Exhaust Outlet 1 3/4" OD Muffler Outlet
Cooling System Air-cooled
Spin-On Oil Filter Standard
Full Pressure Lubrication Standard
Air Cleaner Dual Elemant Air Filter w/ Pre-Cleaner
Fuel LP Gas and Natural Gas
Starting System Electric

Model Number 04589
On LP Gas -
Consumption at 1/2 load 0.59 gallons/hour
Consumption at 3/4 load 0.74 gallons/hour
Consumption at full load load 0.99 gallons/hour
On Natural Gas -
Consumption at 1/2 load 69 cu.ft./hr
Consumption at 3/4 load 84 cu.ft./hr
Consumption at full load load 97 cu.ft./hr

Model Number 04589
Installation Specifications -
Fuel Inlet Fitting Size 3/4" FNPT
Recommended Fuel Hose Size 3/8"
Fuel Inlet Pressure LP Gas: 11-14" Water Column
Natural Gas: 5-7" Water Column
Exhaust Outlet 1 3/4" OD Muffler Outlet
Exhaust Location & Direction
(Facing Engine)
Service Points
(Facing Engine)
Oil Fill: Right-Side
Air Filter: Front-Side
Spark Plug: Left-Side
Power Output: Front-Side
Fuel Regulator: Left-Side
Minimum Cord Size 0-50 Feet: 10 AWG
51-100 Feet: 8 AWG
101-150 Feet: 6 AWG
Engine Oil Type 10W-30 Synthetic

Model Number 04589
Warranty -
Engine Warranty 2 Years
Generator Warranty 2 Years
100% Coverage for Parts & Labor Standard

Model Number 04589
Dimensions -
Without Skid Base
(L x W x H)
30" x 16" x 18-1/2"
With Skid Base
(L x W x H)
32" x 18" x 22-1/2"
Dry weight 215 lbs


E-Mail Address:  

Central Maine Diesel
PO Box 563
Hampden, ME 04444

Toll-Free: 1-888-899-603
Phone: 1-207-941-1188
Fax: 1-207-941-1189

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