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Cummins/Onan K Generator Set

The Cummins/Onan K is a 150 kW gasoline/lp standby generator set. It is available at 240 V, 220 V and 120 V, 10-phase, 50 Hz and rated 7.1 A. It holds about 1 L (0.3 gal) of oil. The set weighs about 50 kg (110 lb).

150 kW
Standby
1.0 L
Oil capacity
4
Document types

How to read your Cummins/Onan serial & model number →

Specifications

Fuelgasoline/lp
Frequency50.0 Hz
Standby power150 kW
Prime power4 kW
Oil capacity1.0 L
Voltage options240 V, 220 V, 120 V
Phase10
Rated current[7.1, 9.1, 18.3, 23.3] A
Battery quantity1
Dry weight50 kg

Maintenance & consumables

ItemSpecCapacityPart #Interval
Air filter—1000 hr find
Fuel filter—500 hr find
Oil filter—300 hr find
Belt—4000 hr find
Coolant—2500 hr
Coolant filter— find
Oil1.0 qt—

Common questions

What is the power rating of the Cummins/Onan K?

The Cummins/Onan K is rated 150 kW standby.

What fuel does the Cummins/Onan K use?

The Cummins/Onan K runs on gasoline/lp.

Troubleshooting

7

Symptoms & remedies

SymptomCauseRemedy
Engine Does Not Crank1. Open control fuse F1. 2a. Check condition of battery and recharge or replace. a. Battery not charged. 2b. Clean and tighten all connections at battery, K1 start solenoid, and starter motor. b. Battery connections loose or dirty. c. Battery cable size too small. 3. Start solenoid (K1) not energized 3a. Check wiring continuity to the start solenoid (K1) coil from control assembly (A1) and from ground to start solenoid (K1). a. Open circuit to start solenoid coil. b. Defective start solenoid coil. 3b. Test start solenoid (K1). 3c. Test Start/Stop switch (S1). 3d. Measure voltage between start solenoid terminal I and ground with switch (S1) held in the Start position. If voltage is not present and continuity and battery check OK, control assembly (A1) is defective.
Engine Cranks But Does Not Start4a. Check continuity between starter lead on start solenoid (S1) and ground. a. Open circuit to starter (B1). b. Open circuit between battery (B+) and the start solenoid contact (BAT). c. Defective start solenoid (K1). 4b. Measure voltage between starter terminal and ground with switch (S1) held in the Start position. If voltage is not present and continuity checks OK, start solenoid (K1) is defective. 4c. If voltage is present in step 4b, starter (B1) is defective.
Engine Cranks from Set but Not from Remote Control Panel5a. Check wiring continuity between control assembly (A1) and remote Start/Stop switch. a. Open circuit between control assy. (A1) and remote Start/Stop switch. b. Remote Start/Stop switch faulty.
Engine Starts But Stops2. Defective low oil level switch.2. Disconnect low oil level switch and check set operation. Replace if defective.
Engine Starts, Then Stops3. No field flash voltage due to:3a. Check wiring continuity to the brush block F1-F2, voltage regulator VR1, control assembly A1 and generator B1-B2 and 01-02 windings. Check connections of P5 and P6 connectors on the generator housing. 3b. Check brushes for wear and for contact with the slip rings. 3c. Check slip rings
Remote Run Lamp Does Not Illuminate5. If remote switch functions properly for starting and stopping genset but meters and run lamp do not operate, and step 1 checks OK, control assy. (A1) defective.If voltage is not present, replace control assembly (A1). If voltage is present, check continuity of remote control wiring.
Too Much DC Load6. Turn off the genset, disconnect the remote control, and check for shorts or too many remote accessories.

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

Parts

136
Part #DescriptionQtySystem
295004Switch1Sensor buy
295034Socket, relay5Sensor buy
295044Transformer2Sensor buy
295045Transformer4Sensor buy
295048Transformer1Sensor buy
295064Transformer assy, 110-120V1Sensor buy
295066Transformer assy, 380-416V1Sensor buy
295068Switch, toggle1Sensor buy
295253Relay (DPDT)3Sensor buy
295254Relay (DPDT)2Sensor buy
295280Transformer2Sensor buy
295281Transformer2Sensor buy
295282Transformer2Sensor buy
295283Transformer2Sensor buy
295284Transformer4Sensor buy
295285Transformer4Sensor buy
295286Transformer4Sensor buy
295287Transformer4Sensor buy
295289Transformer4Sensor buy
295291Transformer4Sensor buy
295292Transformer4Sensor buy
295293Transformer4Sensor buy
295951Dead Buss Relay, 440-480V1Sensor buy
295987Relay assy1Sensor buy
297372Board assy, circuit1Sensor buy
297373Board assy, circuit1Sensor buy
297498Single Phase Sensing Board assy1Sensor buy
297499Single Phase Sensing Board assy1Sensor buy
297822Dead Buss Relay, 110-120V1Sensor buy
297823Dead Buss Relay, 190-208V1Sensor buy
297824Dead Buss Relay, 220-240V1Sensor buy
297825Dead Buss Relay, 380-416V1Sensor buy
297826Dead Buss Relay, 550-600V1Sensor buy
A-295044Transformer assy, 190-208V1Sensor buy
A-295045Transformer assy, 220-240V1Sensor buy
A-295046Transformer assy, 440-480V1Sensor buy
A-295047Transformer assy, 550-600V1Sensor buy
A-295048Transformer assy, 110-120V1Sensor buy
A-295050Transformer assy, 380-416V1Sensor buy
FS-1483.2FIGURE 6-11. MIXTURE NEEDLE INSPECTIONFigure buy
FS-1606-1BI-METAL SPIRAL STRIPBi-metal spiral strip buy
FS-1757-3COVERCover buy
FS-1758MOUNTING BOLTSBolt buy
FS-1759FIGURE 6-9. MIXTURE SCREW ADJUSTMENTFigure buy
FS-1761FIGURE 6-12. FLOAT INSTALLATIONFigure buy
FS-1762CHOKE ASSEMBLYChoke assembly buy
FS-176DCAPCap buy
FS-17E-2FIGURE 6-13. FLOAT LEVELFigure buy
FS-1848DEMAND REGULATOR WITH AUTOMATIC PRIMING SOLENOIDDemand regulator with automatic priming solenoid buy
FS-1849DEMAND REGULATOR WITH AUTOMATIC PRIMING SOLENOIDDemand regulator with automatic priming solenoid buy
FS-1850FUEL SOLENOID VALVEFuel solenoid valve buy
L-74WASHER -b@Washer buy
M-1677SPEED ADJUSTMENT SCREWScrew dieselpartscenter $30.66
M-1678SPEED ADJUSTMENT SCREWScrew dieselpartscenter $31.81
X-6003-36Conduit, plastic1Hose buy
044-00074Onan IN Cable No.Service part / kit buy
044-00075Onan IN Cable No.Service part / kit buy
044-00076Onan IN Cable No.Service part / kit buy
044-00077pigtailService part / kit buy
136200Model 136200 series engineService part / kit buy
151511Ring, lock (15ROY,17.5ROY)1Service part / kit buy
224233Nameplate, serial no4Service part / kit buy
257442Clip, speed2Service part / kit buy
273746Decal, UL1Service part / kit buy
294291Envelope, instruction1Service part / kit buy
294306Hinge1Service part / kit buy
294310Decal1Service part / kit buy
294318Door, enclosure1Service part / kit buy
294322Latch, locking1Service part / kit buy
294414Tag, hang1Service part / kit buy
294602Decal, stripes1Service part / kit buy
295002Door, enclosure1Service part / kit buy
295003Retainer1Service part / kit buy
295009Clip, wire2Service part / kit buy
295010Support, rod2Service part / kit buy
295012Key1Service part / kit buy
295013Nameplate1Service part / kit buy
295015Base, tie wrap1Service part / kit buy
295016Enclosure complete1Service part / kit buy
295020Bracket, transformer1Service part / kit buy
295060Decal, part no1Service part / kit buy
295061Decal, part no1Service part / kit buy
295062Decal, part no1Service part / kit buy
295063Decal, part no1Service part / kit buy
295086Nameplate1Service part / kit buy
295098Screw, flat head machine8Service part / kit buy
295189Clamp, relay hold-down5Service part / kit buy
295232Decal, Transfer Switch1Service part / kit buy
295306Decal, nine-terminal block1Service part / kit buy
295307Decal, six-terminal block1Service part / kit buy
295313Block, nine-terminal1Service part / kit buy
295314Block, six-terminal1Service part / kit buy
295331Nameplate1Service part / kit buy
295332Nameplate1Service part / kit buy
295392Nameplate, serial no4Service part / kit buy
295925Cover, terminal strip1Service part / kit buy
295988Block, 16-terminal1Service part / kit buy
295989Block, eight-terminal1Service part / kit buy
295990Bracket, mounting1Service part / kit buy
295991Insulator, plate1Service part / kit buy
295992Nameplate (NC, NA)1Service part / kit buy
295993Nameplate (B5)1Service part / kit buy
296235Hinge, split1Service part / kit buy
297071Capacitor1Service part / kit buy
297256Pedestal Mounting Feet, 30-150A NEMA 3R1Service part / kit buy
297259Pedestal Mounting Feet, 225-400A NEMA 3R1Service part / kit buy
297260Pedestal Mounting Feet, 225-400A NEMA 11Service part / kit buy
297262Pedestal Mounting Feet, 600-800A NEMA 3R1Service part / kit buy
297263Pedestal Mounting Feet, 600-800A NEMA 11Service part / kit buy
297265Handle, External Manual Operating, 225-260 Amp1Service part / kit buy
297359Bracket, mounting2Service part / kit buy
297600Decal2Service part / kit buy
297938Nameplate1Service part / kit buy
298776Envelope, instruction2Service part / kit buy
298777Enclosure complete1Service part / kit buy
928-0502BService part / kit buy
928-0506Service part / kit buy
932-0404Onan Generator Training Manual1Service part / kit buy
932-0408Electrical/Mechanical Fundamentals1Service part / kit buy
960-0135Service part / kit buy
960-0136Service part / kit buy
960-0242Service part / kit buy
960-0504AService part / kit buy
960-0505Service part / kit buy
960-12Service part / kit buy
A-295026Enclosure complete1Service part / kit buy
A-295027Enclosure complete1Service part / kit buy
B-295028Enclosure complete1Service part / kit buy
S.F.80TRAFFICATORService part / kit buy
X-117-4Screw, H.C. #10-24 x 1.752Service part / kit buy
X-25-7Washer, plain4Service part / kit buy
X-465-10Screw, H.C.2Service part / kit buy
X-468-1Tie cable6Service part / kit buy
X-51-15Screw, R.H.M. 8-32x1/21Service part / kit buy
X-6220-1Enclosure, transfer door2Service part / kit buy
X-70-2Nut, hex 10-244Service part / kit buy

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
Prime
Standby

Available documents

Installation manualOwner's manualParts manualService manual