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SDMO R440K Generator Set

The SDMO R440K is a 350 kW (437 kVA) Diesel standby generator set powered by a John Deere 6125HF070 engine. It is available at 415/240 V, 400/230 V, 380/220 V, 240/120 V, 230/115 V, 220/110 V and 200/115 V, 3-phase, 50 Hz and rated 608 A. It holds about 40 L (10.6 gal) of oil and 43.8 L (11.6 gal) of coolant, with a maximum ambient rating of 105 °C. Starting uses 1 group-12 battery at 12 V. The set measures 4527×1410×2780 mm (178.2×55.5×109.4 in), weighs about 5051 kg (11136 lb) and produces 70 dBA at 7 m. An integrated tank holds 158 L (41.7 gal). The same 6125HF070 engine also powers generator sets from John Deere and Katolight.

350 kW
Standby
12.5 L
Displacement
40.0 L
Oil capacity
1
Document types

How to read your SDMO serial & model number →

Typical fuel consumption for 350–355 kW Diesel generators →

Compare with other 350–355 kW Diesel generators →

Service parts for the R440K

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required
RE502203Fuel filter (primary)$30.00eBay

Oil system

1 required
RG8536Oil filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power350 kW
Standby kVA437
Prime power318 kW
ControllerMicroprocessor
Oil capacity40.0 L
AlternatorLeroy-Somer LSA472VS3
Voltage options415/240 V, 400/230 V, 380/220 V, 240/120 V, 230/115 V, 220/110 V, 200/115 V
Phase3
Rated current608 A
Power factor0.8
Circuit breaker4 poles A
Battery group12 V
Battery voltage12 V V
Battery quantity1
Coolant capacity43.8 L
Max ambient105 °C
Dimensions (L×W×H)4527×1410×2780 mm
Dry weight5051 kg
Sound level70.0 dBA @ 7 m
Fuel tank158.0 L

Engine

John Deere 6125HF070
Oil capacity42.0 L
Coolant capacity16.2 L
Displacement12.5 L
AspirationTurbocharged - Air to Air Intercooled
Rated speed1800 rpm

Filters for the John Deere 6125HF070

6

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

SystemFilterDescriptionCross-references
Oil filterP550595Lube Filter, Spin-On CombinationJOHN DEERE DZ118269, JOHN DEERE RE530107, NAPA 7777, BALDWIN BD7310 KuduParts $44.00
Oil filterP550020Lube Filter, Spin-On Full FlowJOHN DEERE AR58956, JOHN DEERE AT19044T, NAPA 1243, RENAULT VI 0003132302 KuduParts $23.00 FridayParts $25.67
Fuel filterP551773Fuel Filter, Spin-On SecondaryJOHN DEERE RE502204, JOHN DEERE RE506428, NAPA 3720, LETOURNEAU 10P732 buy
Fuel filterP550912Fuel Filter, CartridgeJOHN DEERE RE507284, NAPA 3785, SDMO 330361820 buy
Fuel / water separatorP551855Fuel Filter, Water Separator Spin-OnJOHN DEERE RE502203, BALDWIN BF1390-O, CLAAS 0007962130, MANITOWOC 03322877 FridayParts $39.06

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Coolant filterP554685Coolant Filter, Spin-On Non-ChemicalJOHN DEERE RE11992, NAPA 4070, MTU 0002040791, BLUEBIRD 0064641 buy

Same engine, other brands

2 brands

The John Deere 6125HF070 in this set also powers 4 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
KatolightD41S5FRJ4, KDGC-2001, KDGC-500
John DeereUN-1GNOVOS

Maintenance & consumables

for the John Deere 6125HF070
ItemSpecCapacityPart #Interval
Air filter—500 hr
Fuel filter—500 hr
Fuel filterCheck the glass sediment bowl (A) of the fuel filter/water separator for water or debris. Loosen thumb screw (B) and drain water and debris from bowl into a suitable container, as needed.RE502203500 hr Amazon eBay $30.00 FridayParts $49.99
Oil filterRG8536250 hr Amazon eBay
Battery—
Belt—500 hr
Coolant—2000 hr
Coolant filter—
Oil—100 hr
Spark plug—

Compatible filters for the John Deere 6125HF070 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: John Deere AT220822 John Deere AT203051 John Deere AH115833 John Deere AH148880 John Deere RE67829

Common questions

What is the power rating of the SDMO R440K?

The SDMO R440K is rated 350 kW standby (437.0 kVA).

What engine does the SDMO R440K use?

The SDMO R440K is powered by the John Deere 6125HF070 engine.

What kind of fuel does the SDMO R440K run on?

The SDMO R440K runs on Diesel.

What is the oil capacity of the SDMO R440K?

The John Deere 6125HF070 engine in the SDMO R440K has an oil capacity of 42.0 liters.

What is the cooling system capacity of the SDMO R440K?

The SDMO R440K cooling system holds 43.8 liters (11.6 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the SDMO R440K?

The SDMO R440K is rated 318 kW prime (398 kVA), against 350 kW standby.

How loud is the SDMO R440K?

The SDMO R440K is rated at 70.0 dBA at 7 m, per the manufacturer specification sheet.

What is the dry weight of the SDMO R440K?

The SDMO R440K has a dry weight of 5051 kg (11135 lb).

How big is the fuel tank on the SDMO R440K?

The SDMO R440K has a 158 liter (42 US gallon) fuel tank.

What voltage does the SDMO R440K produce?

The SDMO R440K is offered in 415/240 V, 400/230 V, 380/220 V, 240/120 V, 230/115 V, 220/110 V, 3-phase.

What size battery does the SDMO R440K need?

The SDMO R440K uses 1 battery, 12 V V each, group 12 V, per the manufacturer specification sheet.

What alternator comes on the SDMO R440K?

The SDMO R440K uses a Leroy-Somer LSA472VS3 alternator.

What oil filter fits the SDMO R440K?

The SDMO R440K uses oil filter part number RG8536.

What fuel filter fits the SDMO R440K?

The SDMO R440K uses fuel filter part number RE502203.

Which air filter part number does the SDMO R440K take?

The SDMO R440K uses air filter part numbers JOHN DEERE AT220822, JOHN DEERE AT203051.

Troubleshooting

5

Fault codes

CodeMeaning
Min/max battery voltageBattery voltage out of range
Low fuel levelFuel level is low
Emergency stopEmergency stop activated
No start-upEngine does not start
OverspeedEngine speed exceeds safe limits

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

40
Part #DescriptionQtySystem
RG34710Safety Alert Symbol1Oil filter Amazon eBay
RG8718ACoolant Pump Weep HolePump Amazon eBay
RG8742Belt Tensioner Spring Tension and Belt WearBelt Amazon eBay
RG9918A—High-Low Speed Select Rocker Switch1Speed select rocker switch Amazon eBay
100302RG,RG34710,7600 -19-30JUN97-3/4Service part / kit Amazon eBay
1400302RG,RG34710,7606 -19-30JUN97-1/1Service part / kit Amazon eBay
160302RG,RG34710,7601 -19-06SEP02-1/2Service part / kit Amazon eBay
4100302RG,RG34710,7600 -19-30JUN97-2/4Service part / kit Amazon eBay
55-13RG,RG34710,7600 -19-30JUN97-2/4Service part / kit Amazon eBay
55-14RG,RG34710,7600 -19-30JUN97-3/4Service part / kit Amazon eBay
55-16RG,RG34710,7601 -19-06SEP02-1/2Service part / kit Amazon eBay
55-18RG,RG34710,7602 -19-30JUN97-1/3Service part / kit Amazon eBay
55-20RG,RG34710,7602 -19-30JUN97-3/3Service part / kit Amazon eBay
55-22RG,RG34710,7606 -19-30JUN97-1/1Service part / kit Amazon eBay
55-23Diagnostic Trouble Code Display and Touch SwitchesService part / kit Amazon eBay
JMP11TOQ2Yields one shot 61 6 OVERSPEED 3to2 Yields 5 cycle (el7 SWITCH tat[c7 | ca {cg fer cra cry] Te Te faa] oT dT1 d]1 [2 73 [6 19 [9 | 22] 24]Service part / kit Amazon eBay
OUODN06Rear PTO Serial Number PlateService part / kit Amazon eBay
QUOD002Filling Fuel TankService part / kit Amazon eBay
RG10242Crankcase Ventilation AssemblyService part / kit Amazon eBay
RG5419Prevent Bypass Starting1Service part / kit Amazon eBay
RG6241Radiator Coolant CheckService part / kit Amazon eBay
RG6557DO5104ST TesterService part / kit Amazon eBay
RG8724Timing Gear Cover Fill PortService part / kit Amazon eBay
RG8727Upper Tensioner Spring TensionService part / kit Amazon eBay
RG8728Lower Tensioner Spring TensionService part / kit Amazon eBay
RG8751Oil Pan Adapter Fill PortService part / kit Amazon eBay
S203Handle Batteries SafelyService part / kit Amazon eBay FridayParts $24.89
T8953Avoid Flammable SprayService part / kit Amazon eBay
TS1356Store SafelyService part / kit Amazon eBay
TS187Understand Signal WordsService part / kit Amazon eBay
TS201Follow Safety Instructions1Service part / kit Amazon eBay
TS202Handle Fuel Safely—Avoid FiresService part / kit Amazon eBay
TS204Battery Explosions0Service part / kit Amazon eBay NAPA $32.48
TS206Wear Protective Clothing1Service part / kit Amazon eBay $1600.83 NAPA $24.94
TS207Protect Against Noise1Service part / kit Amazon eBay
TS220Remove Paint Before Welding or Heating1Service part / kit Amazon eBay $13.89 NAPA $26.31
TS226Use Proper Lifting Equipment1Service part / kit Amazon eBay NAPA $20.32
TS281Service Cooling System Safely0Service part / kit Amazon eBay NAPA $24.37
TS291Prepare for EmergenciesService part / kit Amazon eBay
X9811Avoid high-pressure fluids—avoid serious injury1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime50%40.4410.7
Prime75%59.4415.7
Prime100%87.4523.1
Standby50%40.4410.7
Standby75%59.4415.7
Standby100%87.4523.1

Available documents

Spec sheet — R440K GB (SDMO)

This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Fuel filter (primary) RE502203$30.00
1 priced item$30.00
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