Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 6 kW |
| Controller | Microprocessor control |
| Oil capacity | 2.61 L |
| Voltage options | 120 V |
| Phase | 1 |
| Rated current | 62.5 A |
| Circuit breaker | 30 A |
| Battery cranking | 475 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 4.21 L |
| Max ambient | 48.9 °C |
| Dimensions (L×W×H) | 922×599×566 mm |
| Dry weight | 191 kg |
| Sound level | 68.0 dBA @ 3 m |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Green Label Parts air filter with foam pre-cleaner; clean by tapping on flat surface; never wash in solvents or blow out with air hose | — | 50 hr | ||
| Fuel filter | Change on a regular maintenance schedule; removes debris that clogs carburetor jets | — | |||
| Oil filter | Green Label Parts oil filters with bypass valve; change when changing oil | — | |||
| Battery | Clean & check battery & connections; more often in hot weather | — | 500 hr | ||
| Coolant | 50/50 mixture of ethylene glycol based antifreeze and clean soft/distilled water | — | |||
| Oil | OnaMax SAE-30 or SAE 15W-40; API SJ/SL/SM (gasoline) or CF/CF-4/CG-4/CH-4/CI-4/CJ-4 (diesel) | 0.6 L | — | 50 hr | |
| Spark plug | Green Label resistive original equipment spark plugs; non-resistive plugs can cause shutdowns without fault codes | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service intervals
7| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Oil level | Check | 8 hr | Check oil daily or every 8 hours of operating time; perform a general inspection daily per Operator's Manual | |
| Engine oil | Change | 50 hr | First service — Break-in: change engine oil after the first 20-50 hours of operation (RV QG/RV QG RM); perform at least once a year | |
| Battery & connections | Clean | 1 mo | Clean & check battery & connections; perform more often in hot weather | |
| Oil/oil filter - Quiet Diesel 10000/12500 | Change | First service — Break-in then repeat (footnotes 1-4, 2-4) | ||
| Oil/oil filter - Quiet Diesel 5500 | Change | First service — Break-in then repeat (footnotes 1-4, 2-4) | ||
| Oil/oil filter - Quiet Diesel 7500/8000 | Change | First service — Break-in then repeat (footnotes 1-4, 2-4) | ||
| Spark arrester | Clean | 1 mo | Clean arrester; perform sooner if engine performance deteriorates |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
3| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Power output change with altitude | 3.5 | % decrease per 1000 ft increase | typical power output change based on ambient conditions |
| Other | Power output change with temperature | 1 | % decrease per 10 degF increase | typical power output change based on ambient conditions |
| Temperature | Ambient conditions for rated power output | 77 | degF | with muffler and RV enclosure, per ISO 8528-1; altitude 500 ft (152.4 m), 99 kPa dry |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | 50/50 ethylene glycol based antifreeze and water | Mix thoroughly before adding; use clean soft tap water, distilled water or pure rain; select high quality antifreeze with corrosion inhibitors | |||
| Engine oil | SAE 10W-30 / 10W-40 / 0W-30 / 5W-30 | Use viscosity chart to select grade for expected ambient temperature range; avoid mixing grades or brands | |||
| Engine oil | SAE 15W-40 | API CF, CF-4, CG-4, CH-4, CI-4 or CJ-4 (diesel) | OnaMax 15W-40 #326-5336; multi-grade recommended year-round in liquid-cooled engines; synthetic oil not recommended | ||
| Engine oil | SAE-30 | API SJ, SL or SM (gasoline) | OnaMax SAE-30 #326-5339; preferred summer grade for optimum oil consumption control in air-cooled engines | ||
| Fuel | ASTM No.2-D / No.1-D / No.2-DLS / No.1-DLS / B5 Biodiesel | minimum Cetane number 45 | No.2-D or No.2-DLS above 23 degF; No.1-D or No.1-DLS below 23 degF; B5 Biodiesel above 50 degF; use No.1 diesel below 32 degF and during long light-load periods; cloud point at least 10 degF below lowest expected fuel temperature | ||
| Fuel | Diesel | ||||
| Fuel | HD-5 grade liquid propane | at least 90% propane | Fuels other than HD-5 can contain more than 2.5% butane causing poor vaporization/starting below 32 degF | ||
| Fuel | Regular unleaded gasoline | Ethanol blend not more than 10% ethanol; methanol blend not more than 5% methanol | Use fresh gas, not more than 30 days old; fuel stabilizer extends fuel life | ||
| Other | Cummins Onan Premium Fuel System Cleaner | 12.0 oz | Treats up to 24 gallons of gasoline; #326-5342 | ||
| Other | OnaFresh GXLP fuel stabilizer | 16.0 oz | Treats 40 gallons of gasoline; #326-5365 |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What is the power rating of the Cummins/Onan RV QD 6000?
The Cummins/Onan RV QD 6000 is rated 6 kW standby.
What fuel does the Cummins/Onan RV QD 6000 use?
The Cummins/Onan RV QD 6000 runs on diesel.
What is the cooling system capacity of the Cummins/Onan RV QD 6000?
The Cummins/Onan RV QD 6000 cooling system holds 4.21 liters (1.1 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the oil capacity of the Cummins/Onan RV QD 6000?
The Cummins/Onan RV QD 6000 has an engine oil capacity of 2.61 liters (2.8 US quarts), per the manufacturer specification sheet.
How loud is the Cummins/Onan RV QD 6000?
The Cummins/Onan RV QD 6000 is rated at 68.0 dBA at 3 m, per the manufacturer specification sheet.
What is the dry weight of the Cummins/Onan RV QD 6000?
The Cummins/Onan RV QD 6000 has a dry weight of 191 kg (421 lb).
What voltages is the Cummins/Onan RV QD 6000 available in?
The Cummins/Onan RV QD 6000 is offered in 120 V, 1-phase.
What size battery does the Cummins/Onan RV QD 6000 need?
The Cummins/Onan RV QD 6000 uses 1 battery, 12 V each, 475 CCA, per the manufacturer specification sheet.
Troubleshooting
7Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Fails To Crank | Low battery, Bad battery connection, Blown fuse | Check battery fluid level, Clean & tighten all battery & cable connections, Replace fuse on control panel |
| Cranks But Won’t Start | Fuel below generator pickup level in tank, Fuel supply shutoff valve closed, Carbon deposits on spark plug(s), Low oil level | Add fuel, Fully open fuel supply valve, Remove spark plug(s) and replace, Add oil |
| Exhausting Black Smoke | Dirty air filter | Replace air filter |
| Unit Runs Then Stops, Or Stops When Driving Around A Corner | Low fuel level, Low oil level, Excess oil | Add fuel, Add oil, Reduce engine oil level |
| Unit Starts And Runs, Then Stops When The Start Switch Is Released | Low fluid levels, Possible overheating, Other functional problem | Check & bring all fluids up to the appropriate levels, Check for blocked air flow or other possible causes of overheating, Contact an Cummins Onan Authorized RV Service & Parts Dealer |
| Unit Runs Then Surges | Loose or worn spark plug leads, Defective ignition coil, wiring, or control components, Faulty spark plug, Governor out of adjustment, Combustion air pre-heat malfunction, Carburetor icing, Carburetor varnishing | Check spark plug leads at spark plug & ignition coil, Contact an Cummins Onan Authorized RV Service & Parts Dealer, Remove spark plug & clean or replace, Contact an Cummins Onan Authorized RV Service & Parts Dealer, Contact an Cummins Onan Authorized RV Service & Parts Dealer, Contact an Cummins Onan Authorized RV Service & Parts Dealer |
| Circuit Breaker Trips | Overloaded circuit | Turn-off some of the electrical load, and reset the circuit breaker |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
69model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 122-0645 | Filter, Oil | 1 | Oil filter | Amazon eBay $11.99 NAPA $9.09 |
| 122-0800 | Oil filter | 1 | Oil filter | Amazon eBay $31.23 FridayParts $39.99 |
| 122-0827 | Oil filter | Oil filter | eBay $17.87 FridayParts $20.19 | |
| 122-0833 | Filter, Oil | 1 | Oil filter | Amazon eBay $19.99 NAPA $9.64 FridayParts $20.19 |
| 122-0893 | Oil filter | Oil filter | eBay $49.99 | |
| 140-0495 | Air Cleaner Element | 1 | Air filter | Amazon eBay $16.99 NAPA $29.20 |
| 140-1220 | Air Cleaner Element | Air filter | Amazon eBay $25.00 | |
| 140-1229 | Air filter | Air filter | eBay | |
| 140-2105 | Oil filter | Oil filter | eBay $44.01 | |
| 140-2379 | Element, Air Cleaner | 1 | Air filter | Amazon eBay $11.59 NAPA $15.71 |
| 140-2609 | Oil filter | Oil filter | eBay $9.99 | |
| 140-2680 | Air filter | Air filter | eBay | |
| 140-2842 | Air filter | Air filter | eBay | |
| 140-2897 | Element, Air Filter | 1 | Air filter | Amazon eBay $19.99 FridayParts $48.61 |
| 140-3071 | Air filter | 1 | Air filter | Amazon eBay $13.50 FridayParts $16.50 |
| 140-3116 | Oil filter | Oil filter | eBay $18.99 FridayParts $48.88 | |
| 140-3280 | Oil filter | Oil filter | eBay $34.03 KuduParts $12.00 FridayParts $14.60 | |
| 140-3295 | Oil filter | Oil filter | eBay $12.79 | |
| 140-3351 | Air filter | 1 | Air filter | Amazon eBay $56.44 |
| 147-0860 | Filter, Fuel for HDKAK and HDKAH (Beginning Spec N) | 1 | Fuel filter | Amazon eBay $19.99 KuduParts $12.00 |
| 148-0898 | Fuel filter | 1 | Fuel filter | Amazon eBay |
| 149-1353 | Filter, Fuel Pump Fuel | 1 | Fuel filter | Amazon eBay $20.98 NAPA $7.27 |
| 149-1914-05 | Fuel Filter Element | 1 | Fuel filter | Amazon eBay $41.25 |
| 149-2106 | Fuel Filter | 1 | Fuel filter | Amazon eBay $34.99 NAPA $61.61 KuduParts $68.00 |
| 149-2137 | Air filter | 1 | Air filter | Amazon eBay $37.20 KuduParts $7.00 |
| 149-2279 | Filter, Fuel | 1 | Fuel filter | Amazon eBay $26.93 KuduParts $31.00 FridayParts $33.04 |
| 149-2333 | Filter, Carburetor Fuel | 1 | Fuel filter | Amazon eBay $10.97 KuduParts $8.00 FridayParts $10.50 |
| 149-2341 | Filter, Fuel | 1 | Fuel filter | Amazon eBay $14.39 |
| 149-2457 | Air filter | Air filter | eBay $11.50 KuduParts $10.00 FridayParts $12.00 | |
| 149-2513 | Filter, Fuel | 1 | Fuel filter | Amazon eBay $36.95 NAPA $31.59 FridayParts $48.61 |
| 149-2629 | Air filter | Air filter | eBay | |
| 149-2648 | Fuel filter (LP) | Fuel filter | eBay $20.00 | |
| 160-1378 | Electronic Ignition | Electronic ignition | Amazon eBay | |
| 167-0237 | Plug, Spark | 2 | Spark plug | Amazon eBay $14.00 NAPA $3.97 |
| 167-0241 | Spark Plugs | 2 | Spark plug | Amazon Amazon eBay $34.86 eBay $17.97 |
| 167-0247 | Spark Plug | 2 | Spark plug | Amazon eBay $5.00 |
| 167-0262 | Spark plug | Spark plug | eBay $12.99 | |
| 167-0263-02 | Plug, Spark | 1 | Spark plug | Amazon eBay $15.68 NAPA $2.23 |
| 167-0272 | Plug, Spark (E1, E2) | 2 | Spark plug | Amazon eBay |
| 167-0275 | Duct, Inlet-Air | 1 | Duct inlet air | Amazon eBay $20.38 |
| 167-0298 | Plug, Spark | 2 | Spark plug | Amazon eBay $9.99 |
| 167-0305 | Fuel filter | Fuel filter | eBay | |
| 167-1602 | Cable, Spark Plug | 2 | Spark plug | Amazon eBay $53.93 |
| 167-1638 | Fuel filter | Fuel filter | eBay | |
| 185-2289 | Glow Plug (12 Volt) | Glow plug | Amazon eBay $24.95 | |
| 185-5421 | Plug, Glow | 2 | Glow plug | Amazon eBay $35.00 |
| 185-5835 | Oil Filter | 1 | Oil filter | Amazon eBay $21.78 NAPA $3.59 FridayParts $20.19 |
| 185-5990 | Glow Plug (12 Volt) | 1 | Glow plug | Amazon eBay $55.74 |
| 185-6623 | Glow plug | Glow plug | Amazon eBay $39.99 | |
| 185-7444 | Filter, Oil | 1 | Oil filter | Amazon eBay $29.95 NAPA $9.09 KuduParts $11.00 FridayParts $13.23 |
| 187-1000 | Filter, Oil | 1 | Oil filter | Amazon eBay $63.20 FridayParts $20.19 |
| 187-1289 | Glow plug | 3 | Glow plug | Amazon eBay |
| 326-5336 | OnaMax engine oil, 15W-40, 32 oz. bottle | Fluid | eBay $43.24 | |
| 326-5339 | OnaMax engine oil, SAE-30, 32 oz. bottle | Fluid | eBay $109.19 | |
| 326-5365 | OnaFresh GXLP fuel stabilizer, 16 oz. bottle | Fluid | eBay | |
| 420-0577 | Oil filter wrench (cup-type) | Oil filter | Amazon eBay $19.68 | |
| 122-0836 | Tune-up kit (electronic ignition) | Service part / kit | eBay $18.99 FridayParts $20.28 | |
| 160-0002 | Point Set, Breaker | 1 | Service part / kit | Amazon eBay $19.99 NAPA $28.64 |
| 160-1154 | Point Set, Breaker | 1 | Service part / kit | Amazon eBay |
| 160-1328-01 | Tune-up kit | Service part / kit | eBay | |
| 160-1348-01 | Tune-up kit | Service part / kit | eBay | |
| 160-1349-01 | Tune-up kit (electronic ignition) | Service part / kit | eBay | |
| 167-1615-01 | Cable, Spark Plug 9' | 1 | Service part / kit | Amazon eBay |
| 167-1616-01 | Plug wire | Service part / kit | eBay $60.00 | |
| 167-1625-01 | Plug wire, 9 in. | Service part / kit | Amazon eBay | |
| 167-1625-02 | Plug wire, 23 in. | Service part / kit | eBay | |
| 326-5278 | 4C Combustion Chamber and Carburetor Cleaner, 12-oz. aerosol can | Service part / kit | eBay | |
| 326-5288 | Onagard storage fogging spray, 12-oz. aerosol can | Service part / kit | eBay | |
| 326-5342 | Cummins Onan Premium Fuel System Cleaner, 12-oz. bottle | Service part / kit | eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. 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 |
|---|---|---|---|
| 0.76 | 0.2 | ||
| 50% | 1.14 | 0.3 | |
| 100% | 1.51 | 0.4 | |
| Standby | 0.49 | 0.13 | |
| Standby | 50% | 1.85 | 0.49 |
| Standby | 100% | 3.86 | 1.02 |
Available documents
Spec sheet — Cummins Onan 6.0 SPecification Sheet (Cummins/Onan)Owner's manual — Onan - Generator Handbook (2019) (Cummins/Onan)Parts manual — F-1123 Cummins-Onan RV Generator Handbook (08-2007) (Cummins/Onan)
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.