Specifications
| Fuel | diesel |
|---|---|
| Voltage options | 3000 V, 50 V, 3600 V, 60 V |
| Phase | three phase |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | find | |||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Common questions
What fuel does the Cummins/Onan DL6 use?
The Cummins/Onan DL6 runs on diesel.
Troubleshooting
5Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Dizziness | Get out into fresh air immediately, shut down the unit and do not use until it has been inspected. |
| Vomiting | Get out into fresh air immediately, shut down the unit and do not use until it has been inspected. |
| Muscular Twitching | Get out into fresh air immediately, shut down the unit and do not use until it has been inspected. |
| Weakness and Sleepiness | Get out into fresh air immediately, shut down the unit and do not use until it has been inspected. |
| NO AC OUTPUT VOLTAGE AT RATED ENGINE RPM | Test voltage regulator assembly per procedure (S). Replace the regulator PC board per procedure (F) if defective. If control panel field breaker CB3 is OFF, replace the defective field breaker. Push to reset breaker and check if AC output voltage builds up. Check residual voltage across TB2-2 and H1 for 5 to 10 VAC or more. Flash exciter field per TEST [D] and check if generator output voltage builds up. Disconnect stator leads 7 (4) and 8 (1) from TB2-2 and H1, then check residual voltage across these leads for 5 to 10 VAC or more. Check reactor L21 and transformer T21 per TEST [B] and [E]. Ensure exciter field voltage across TB1-5 & 6 is 5 VDC or more. Test diodes and SCR’s on bridge assembly CR21, check exciter field wiring harness per TEST [M], and verify fuses F2 and F3 for continuity on VR21 regulator PC board. Check exciter field winding per TEST [H] and replace if bad. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Repair guides
1Step-by-step procedures compiled from the Cummins/Onan service manual for this model.
Parts
175| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-1791 | Indicator. Service Hood, Air Cleaner | 1 | Air filter | buy |
| 151-0437 | Kit. Throttle Modification (Fuel Injection Pump) | 1 | Fuel pump | buy |
| 168-0160 | 1 Gasket Kit, Valve Grinding | 1 | Gasket | buy |
| 168-0162 | ] Gasket Kit, Engine | Gasket | buy | |
| 191-1360 | 1 Alternator, Complete | Alternator | buy | |
| 191-1394 | 1 Starter, 12 Volt - Complete | Starter | buy | |
| 191-1525 | Alternator (Complete) Used Beginning on Late Spec C Models- Has No Isolation Diodes on Back Side of Alternator (Replaces Early Spec C Models with Isolation Diode Assembly on Back Side of Alternator) | 1 | Alternator | buy |
| 193-0244 | Sender, Pressure - 0i1 | 1 | Sensor | buy |
| 503-0354 | Clamp, Hose | 4 | Hose | buy |
| 503-0465 | Clamp, Hose | 4 | Hose | eBay |
| 503-0482 | Hose, Rubber | 1 | Hose | buy |
| 101-0677 | 1 Standard | 1 | Service part / kit | buy |
| 101-0678 | 1 0.25 MM Undersize | 1 | Service part / kit | buy |
| 101-0679 | 1 0.50 MM Undersize | 1 | Service part / kit | buy |
| 101-0680 | 1 0.75 MM Undersize | 1 | Service part / kit | buy |
| 101-0681 | ] Standard | 1 | Service part / kit | buy |
| 101-0682 | ] 0.25 MM Undersize | 1 | Service part / kit | buy |
| 101-0684 | 1 0.75 MM Undersize | 1 | Service part / kit | buy |
| 101-0685 | 4 Standard | 2 | Service part / kit | FridayParts $26.83 |
| 101-0686 | 4 0.25 MM Undersize | 2 | Service part / kit | buy |
| 101-0687 | 4 0.50 MM Undersize | 2 | Service part / kit | buy |
| 101-0688 | 4 0.75 MM Undersize | 2 | Service part / kit | buy |
| 101-0689 | 1 Standard | 1 | Service part / kit | buy |
| 101-0690 | 1 0.25 MM Undersize | 1 | Service part / kit | buy |
| 101-0691 | 1 0.50 MM Undersize | 1 | Service part / kit | buy |
| 101-0692 | ] 0.75 MM Undersize | 1 | Service part / kit | buy |
| 101-C | 6&3 l 0.50 MM Undersize | Service part / kit | buy | |
| 110- | 1 Block Assembly - Cylinder (Includes Parts Marked *) | Service part / kit | buy | |
| 110-2781 | 6 Standard | Service part / kit | buy | |
| 110-2846 | 6 Standard | Service part / kit | buy | |
| 110-2847 | 6 Standard | Service part / kit | buy | |
| 110-2978 | 2 * Pin, Cylinder Head Alignment | 2 | Service part / kit | buy |
| 112-0201 | 6 Standard | Service part / kit | buy | |
| 112-0202 | 6 0.25 MM Oversize | Service part / kit | buy | |
| 112-0203 | 6 0.50 MM Oversize | Service part / kit | buy | |
| 112-0204 | 6 0.75 MM Oversize | Service part / kit | buy | |
| 112-C205 | 6 1.0 MM Oversize | Service part / kit | buy | |
| 113-0233 | 6 Standard | Service part / kit | buy | |
| 113-0234 | 6 0.25 MM Oversize | Service part / kit | buy | |
| 113-0236 | 6 0.75 MM Oversize | Service part / kit | buy | |
| 113-0237 | 6 1.0 MM Oversize | Service part / kit | buy | |
| 114-0319 | | 12 Standard | Service part / kit | buy | |
| 114-0333 | 12 0.25 MM Undersize | Service part / kit | buy | |
| 114-0334 | 12 0.50 MM Undersize | Service part / kit | buy | |
| 114-0335 | 12 0.75 MM Undersize | Service part / kit | buy | |
| 130-1835 | 1 Baffle, Air | Service part / kit | buy | |
| 130-1872 | ] Suction Type Fan | Service part / kit | buy | |
| 130-1873 | ] Push Type Fan | 1 | Service part / kit | buy |
| 130-1899 | 2 Support, Front | Service part / kit | buy | |
| 130-1986 | 1 Adapter, Duct | Service part / kit | buy | |
| 130-1993 | 1 75 MM Wide | Service part / kit | buy | |
| 140-0078 | Band, Mount ing | 2 | Service part / kit | buy |
| 140-0317 | 2 Industrial Muffler | 19 | Service part / kit | buy |
| 140-0649 | 3 Residential Muffler | 3 | Service part / kit | buy |
| 140-0752 | 3 Critical Muffler | 1 | Service part / kit | buy |
| 140-1844 | DGAB. DL4, A41 | 1 | Service part / kit | buy |
| 140-1845 | DGAC. DGAD. DL6. A61 | 11 | Service part / kit | buy |
| 140-1851 | Element | 1 | Service part / kit | buy |
| 140-1864 | Elbow, Rubber | 1 | Service part / kit | buy |
| 140-1871 | Tube, Air Inlet | 1 | Service part / kit | buy |
| 147-0501 | ] 60 Hertz Sets © | Service part / kit | buy | |
| 147-0505 | ] 50 Hertz Sets | Service part / kit | buy | |
| 150-0939 | Joint, Ball | 2 | Service part / kit | buy |
| 150-1996 | Bracket. Mounting | 1 | Service part / kit | buy |
| 151-0565 | Control, Governor (A12) (Includes Jumper) | 1 | Service part / kit | buy |
| 151-0566 | Actuator. Governor | 1 | Service part / kit | buy |
| 151-0567 | Arm. Governor (Includes Screw and Nut) | 1 | Service part / kit | buy |
| 155-1268 | ] Residential | Service part / kit | buy | |
| 155-1430 | Spacer | 8 | Service part / kit | buy |
| 155-1614 | 1 Critical | 1 | Service part / kit | buy |
| 155-1931 | 1 Shield, Heat | 1 | Service part / kit | buy |
| 155-1932 | ] Industrial | Service part / kit | buy | |
| 191-0943 | Fan. Atlernator | 1 | Service part / kit | buy |
| 191-1452 | Used on early Spec C Models with isolation Diode Assembly | 1 | Service part / kit | buy |
| 191-1453 | Spec C Used on Early Spec C Model with Isolation Diode Assembly | 1 | Service part / kit | buy |
| 191-1454 | Diode Assembly. Isolation- Used on Early Spec C Models Diode, Rectifier - Negative | 1 | Service part / kit | buy |
| 191-1559 | Used on Late Spec C Models without Isolation | 1 | Service part / kit | buy |
| 191-1560 | Used on Late Spec C Modeis without Isolation Diode Assembly | 1 | Service part / kit | buy |
| 201-2590 | 1 3 - Phase | Service part / kit | buy | |
| 201-2757 | ] ] - Phase | Service part / kit | buy | |
| 201-2948 | ] 3 - Phase | Service part / kit | buy | |
| 201-2956 | ] 1 - Phase | Service part / kit | buy | |
| 220-3532 | 1 60 Hertz | Service part / kit | buy | |
| 220-3560 | ] 60 Hertz | Service part / kit | buy | |
| 220-3570 | 1 60 Hertz - Environmentally Protected | Service part / kit | buy | |
| 220-3588 | 1 60 Hertz - Environmentally Protected | Service part / kit | buy | |
| 220-3590 | 1 50 Hertz . | Service part / kit | buy | |
| 220-3591 | ] 50 Hertz | Service part / kit | buy | |
| 220-3618 | ] 50 Hertz - Environmentally Protected | Service part / kit | buy | |
| 220-3620 | 1 50 Hertz ~- Environmentally Protected | Service part / kit | buy | |
| 300-2382 | l 2 Light Control — Standard | Service part / kit | buy | |
| 300-2383 | 1 11 Light Control - Optional | Service part / kit | buy | |
| 300-2384 | ] 11 Light Control W/Watt Meter and Power Factor | Service part / kit | buy | |
| 300-2551 | 1 2 Light Control - Standard | Service part / kit | buy | |
| 300-2553 | 1 11 Light Control - Optional | Service part / kit | buy | |
| 302-0075 | 3 3 - Phase | Service part / kit | buy | |
| 302-0079 | 2 1] - Phase | 3 | Service part / kit | buy |
| 302-0235 | Clamp, Upper Washer, Lock - IT (U1O) | 6 | Service part / kit | buy |
| 302-0236 | Clamp, Lower | 1 | Service part / kit | buy |
| 302-0253 | Shim | 1 | Service part / kit | buy |
| 302-1082 | Transducer, Watts 3 Phase, 60 Hertz | 1 | Service part / kit | buy |
| 302-1083 | Transducer, Watts 3 Phase, 50 Hertz | 1 | Service part / kit | buy |
| 302-1113 | ] 60 Hertz - 1 — Phase | Service part / kit | buy | |
| 302-1371 | 1 3 - Phase | Service part / kit | buy | |
| 302-1383 | As Req. Strip, Foam -— Meter Mounting | Service part / kit | buy | |
| 302-1386 | 4 2 Light Control - Standard | Service part / kit | buy | |
| 302-1389 | 1 60 Hertz | Service part / kit | buy | |
| 302-1398 | ] 50 Hertz | Service part / kit | buy | |
| 302-1419 | l 1 - Phase | Service part / kit | buy | |
| 302-C236 | 2 1 - Phase | Service part / kit | buy | |
| 308-0653 | 1 11] Light Control - Optional | Service part / kit | buy | |
| 308-0654 | 1 2 Light Control -— Standard | Service part / kit | buy | |
| 309-0169 | 1 Begin Spec G 25 26 | 1 | Service part / kit | buy |
| 322-0303 | 1 2 Light Control - Standard | Service part / kit | buy | |
| 322-0305 | 1 11 Light Control - Optional | | Service part / kit | buy | |
| 323-1083 | 14 ~ Place | Service part / kit | buy | |
| 323-1235 | 1 16 - Place | Service part / kit | buy | |
| 332-2370 | 6 1 -— Phase | 1 | Service part / kit | buy |
| 333-0202 | 1 240 Volt | Service part / kit | buy | |
| 333-0204 | 1 120 Volt | Service part / kit | buy | |
| 336-8350 | | 2 1 - Phase | Service part / kit | buy | |
| 338-1540 | 1 11 Light Control W/Watt Meter and Power Factor | Service part / kit | buy | |
| 338-1555 | 1 3 - Place | Service part / kit | buy | |
| 338-1576 | ] 1 - Place | Service part / kit | buy | |
| 338-1600 | 1 2 Light Control - Standard | Service part / kit | buy | |
| 338-1601 | 1 11 Light Control - Optional | Service part / kit | buy | |
| 338-1604 | ] 3 - Phase | Service part / kit | buy | |
| 338-1606 | ] 1 - Phase | Service part / kit | buy | |
| 358-0069 | ] Positive | 1 | Service part / kit | buy |
| 358-0070 | ] Negative | 1 | Service part / kit | buy |
| 364A | 320-043] 1 Breaker, Circuit (Part of Wiring Harness) | Service part / kit | buy | |
| 501-0092 | 1 Line, Fuel -— Flexible (60") | Service part / kit | buy | |
| 501-0441 | Line, Fuel - Flex (Fuel In) | 1 | Service part / kit | buy |
| 503-1222 | Elbow, 90 Tube, Intake | 2 | Service part / kit | buy |
| 505-0001 | Cap, Pipe (1/8") | 1 | Service part / kit | buy |
| 505-0274 | Spec A through N Spec P through S Tee, Restricted - Front Cylinder Head - Spec A | 1 | Service part / kit | buy |
| 517-0141 | 6 * 50.8 MM Stainless Steel | 4 | Service part / kit | buy |
| 517-0144 | 2 * 12.7 MM Steel | 2 | Service part / kit | buy |
| 517-0146 | ] * 31.75 MM Stainless Steel | 1 | Service part / kit | buy |
| 517-0162 | 6 19.05 MM | 4 | Service part / kit | buy |
| 525-0454 | 1 Paint, Greige Touch Up (13 Oz. Pressurized Can) | Service part / kit | buy | |
| 526-2105 | 4 Industrial Muffler | Service part / kit | buy | |
| 562-0153 | 1 * 6.35 MM - Brass | Service part / kit | buy | |
| 718-1003 | 4 M5 X 10 MM | Service part / kit | buy | |
| 718-1017 | 6 M6 X 10 MM | 3 | Service part / kit | buy |
| 718-1032 | 8 M8 X 10 MM | 1 | Service part / kit | buy |
| 718-1036 | 1 M8 X 20 MM | 1 | Service part / kit | buy |
| 718-1037 | Screw, Cap - Hex Head | Service part / kit | buy | |
| 718-1039 | M8x25MM M8x35MM | ; | Service part / kit | buy |
| 718-1043 | 2 M8 X 55 MM | Service part / kit | buy | |
| 718-1044 | 2 M8 X 60 MM | 1 | Service part / kit | buy |
| 718-1045 | 4 M8 X 65 MM (Push Type Fan) | Service part / kit | buy | |
| 718-1046 | 2 M8 X 70 MM | 1 | Service part / kit | buy |
| 718-1048 | 1 M8 X 80 MM | 1 | Service part / kit | buy |
| 718-1053 | 6 M10 X 20 M™&™ | Service part / kit | buy | |
| 718-1067 | Screw. Hex Head | 1 | Service part / kit | buy |
| 718-1085 | 4 M8 X 85 MM | Service part / kit | buy | |
| 720-1801 | | 14 * Screw, Cap - Hex Head — Special | 10 | Service part / kit | buy |
| 725-1053 | l Screw, Socket Head Cap (M8 X 35 MM) | Service part / kit | buy | |
| 740-1004 | Install 4 Middle Holes - RH, LH Heads | 4 | Service part / kit | buy |
| 740-1801 | Washer, Flat (M12) | 20 | Service part / kit | buy |
| 740-1802 | ] M& - Special | Service part / kit | buy | |
| 750-1008 | 6 Nut, Hex (MJ0) | Service part / kit | buy | |
| 775-0074 | 2 * 8 MM X 20 MM | 2 | Service part / kit | buy |
| 775-0078 | 2 * 8 MM X 40 M&M | 2 | Service part / kit | buy |
| 775-0089 | 2 * 10 MM X 20 MM | 2 | Service part / kit | buy |
| 800-0002 | 6 1 - Phase | 2 | Service part / kit | buy |
| 800-0006 | Screw, Cap - Hex Head (1/4-20 × 7/8") | 4 | Service part / kit | buy |
| 800-2067 | 4 Industrial Muffler (M8 X 70 MM) | 1 | Service part / kit | buy |
| 800-2095 | 6 Residential Muffler and Critical (M10 X 70 MM) | Service part / kit | buy | |
| 803-0042 | 4 1 - Phase | Service part / kit | buy | |
| 850-0040 | Washer, Lock - Spring (1/4") | 2 | Service part / kit | buy |
| 850-2010 | Lock | 1 | Service part / kit | buy |
| 862-0001 | Nut, Hex (1/4-20) | 2 | Service part / kit | eBay |
| 870-0131 | Nut. Hex - with ET (#10-32) | 1 | Service 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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | |||
| Standby |
Available documents
Operator's manual — 934-0121 Onan DL4B DL6B DL6TB Operator's Manual (8-1964)Parts manual — 0932-0112 Onan Post-Sale Literature Index (07-1998) (Cummins/Onan)Parts manual — 934-0224 Onan DL6 (spec A-B) Diesel Genset Parts manual (01-1982) (Cummins/Onan)Parts manual — 934-0226 Onan DL6T Parts Manual (3-1988) (Cummins/Onan)Parts manual — 934-0236 Onan DGAB DGAC DGAD (Spec F) DGAE (Spec C) DL4 DL6 (Spec C-F) DLT (Spec A-C) A41 A61 (Spec E) A61T (Spec B) (08-2011) (Cummins/Onan)Service manual — 900-0336 Onan DL4 DL6 DL6T Genset Generator & Controls Service manual (08-1983) (Cummins/Onan)Service manual — 900-0339 Onan DL4B DL6B DL6TB YHB Generator Controls manual 11-1984 (Cummins/Onan)