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Kohler Engine KD15 440

Kohler diesel engine series KD15 model 440

The Kohler Group, with the release of the new KD15 440 model on the market, has decided to further improve the performance of the famous Lombardini 15LD 440 already market leader in the sector, offering reduced fuel consumption and low emissions levels (for the European market suitable for Stage V standards). The KD15 440 is an air-cooled single cylinder diesel engine with a displacement of 441 cc and a power of 7.4 kW, which thanks to the new air filter and the new tank, is the engine with the longest maintenance intervals and more simple category maintainability. Its remarkable versatility makes it useful for many applications, such as: walk-behind tractor, tiller, lawn mower, water pump (irrigation), concrete mixer, minidumper, compaction roller, vibrating plate, asphalt cutter, line striper, self-priming water pump, air compressor, generator set, welder, motor sweeper, aerial platform, high pressure washer, fire fighting pump.

To view all the other Kohler engines go to Kohler Engines Catalogue

To view the Lombardini engines insteand, go to Lombardini Engines Catalogue 


Owner Manual Kohler KD 440 Workshop Manual Kohler KD 440

New product

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  • In order to meet ever increasing market demands, the kohler group has been updating its range of air-cooled, single cylinder diesel engines. Now, we are pleased to present the new kd15 440 engine, which, with its advanced technical features, strengthens and improves the current 15 ld ngine series elevating it to the very top of the class within its power range.

    The 15 ld440 model, already a market leader in numerous sectors including: agriculture, construction, generating sets and pumps, has been substantially updated. Now re-branded as the kd15 440, the new engine has improved performance, reduced maintenance costs and increased ease of use for the operator.

    AIR CLEANER. The new air filter allows an use also in extremely dusty conditions. This result has been achieved thanks to a high efficiency separator with pre-filter (optional) and an ccumulated-dust drain valve in the filter itself. Furthermore, the increased dimensions of the cartridge and the high filtration capacity of the paper element greatly enhances the engine protection, resulting in a considerable reduction in maintenance costs.

    TANK AND FUEL FILTER. The new tank, with its modified components, greatly contributes to facilitating all maintenance operations due to some significant improvements, including a new fuel filter which is enhanced with additional safety filter protection. The primary filter (optional) and the safety one, used in tandem, avoid the accidental entry of foreign particles during the fuel refilling process. The primary filter housed inside the tank is easily accessible and can be replaced without the use of any special tools.

    DRAIN TAP. The new drain tap makes it possible to remove water and impurities which accumulate in the bottom of the tank, allowing for cleaning without the need to dismantle other components.

    TAIR CLEANER CLOGGING INDICATOR (OPTIONAL). The air filter clogging indicator integrated into the engine configuration makes it possible to clearly see when maintenance is required.

    LARGER OIL SUMP (OPTIONAL) The larger oil sump increases the intervals between maintenance to 500 hours as opposed to 250 hours in standard versions.


    Lawn Mower
    Water Pump (Irrigation)
    Concrete Mixer
    Compaction Roller
    Vibrating Plate
    Asphalt Cutter
    Line Striper
    Self-Priming Water Pump
    Air Compressor
    Generator Set
    Motor Sweeper
    Aerial Platform
    High Pressure Washer
    Fire fighting pump


    High Power Density
    Low Weight
    Low Fuel Consumption
    Low Oil Consumption
    A Complete Range of Accessories
  • 4 stroke air cooled diesel engine
    Conical power take-off on crankshaft
    Anticlockwise rotation
    Forced lubrication with oil pump
    Centrifugal mass governor
    Built-in full flow oil filter
    Oil breathing blow-by with safety device
    Automatic extra fuel starting device
    Self bleeding fuel system
    Torque adjuster
    Automatic compression release
    Die-cast aluminum crankcase with integral cast iron cylinder liner
    Aluminum cylinder head
    Built-in rigid feet
    Cylinder 1
    Bore (mm) 86
    Stroke (mm) 76
    Engine displ (cm3) 441
    Injection system DI
    Compression ratio 20.3:1
  • Performance curves Kohler engine KD15 440
    Emission compliance ECE R 24 US TIER 4 F EU Stage V#
    Rating (kW/HP)*Performance curves 3600rpm 3600rpm 3600rpm
    N (80/1269/CEE)ISO 1585 - - -
    NB ISO 3046 IFN 7.5/10.1 7.0/9.4 7.5/10.1
    NA ISO 3046 ICXN - - -
    Max torque (Nm@rpm) 23@2200 23@2200 24.5@2200
    Min idling speed 950:1000
  • H × L × W (fan excluded) (mm) 493.1 × 412.8 × 340
    Dry weight (kg) 45
    Daily service points - positions 1 side service
    Ambient operating temps (°C) -10° to +50°
    Gradeability-all round
    (intermittent -30 min) (deg)
    Gradeability-all round(
    peak value -1 min) (deg)
    Cap. of air required for correct combustion @3600 (l/min) 640
    Cap. of air required for correct cooling @3600 (l/min) 5500
    Dimensions Kohler engine KD15 440
  • Fuel tank capacity (l) 4.3
    Oil sump capacity (l) 1.2
    Oil consumption (kg/h) 0.0032
    Oil change interval std/synthetic (hr) 250
    Oil filter change interval std/synthetic (hr) 500
    Dry air cleaner change interval (hr) 500
    Valve adjustement 500
    Lubrication SAE 5W 40 API Service CF