Specifications
| Frequency | 60.0 Hz |
|---|---|
| Prime power | 7 kW |
| Oil capacity | 1.7 L |
Maintenance & consumables
for the Generac GN-570| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 100 hr | find | ||
| Fuel filter | — | find | |||
| Oil filter | — | 25 hr | find | ||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | — |
Common questions
What engine does the Generac Q70 use?
The Generac Q70 is powered by the Generac GN-570 engine.
What is the oil capacity of the Generac Q70?
The Generac GN-570 engine in the Generac Q70 has an oil capacity of 1.7 liters.
Troubleshooting
41Fault codes
| Code | Meaning |
|---|---|
| 9202-1 | Bottom out |
| 9203-1 | Bottom out |
| 9204-1 | Bottom out |
| 9205-1 | Bottom out | Out-the-side |
| 9206-1 | Bottom out | Out-the-side |
| 9207-1 | NP 6600 120/240 55/27 60 3600 | 2300 | Bottom out |Out-the-side| 89405 |
| 9290-2 | Bottom out | Bottom out |
| 9509-2 | 6600 |
| 9592-1 | 5500 120/240 Bottom out Universal |
| 9592-2 | 5500 |
| 9593-1 | 7000 120/240 Bottom out Universal |
| 9593-2 | 7000 120/240 Bottom out | Universal |
| 9600-0 | NP 6600 120/240 55/27 60 3600 | 2700 | Bottom out | Universal 92116 |
| 9600-1 | 6600 120/240 Bottom out Universal |
| 9600-2 | 6600 |
| 9677-1 | 7200 120/240 Bottom out Universal |
| 9677-2 | 7000 120/240 Bottom out Universal |
| 9677-3 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out | Universal 92116 |
| 9677-4 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out | Universal 92116 |
| 9712-0 | NP 5000 120/240 41/20 60 3600 | 2751 Bottom out | Universal 92116 |
| 9712-1 | NP 5000 120/240 41/20 60 3600 | 2751 Bottom out | Universal 92116 |
| 9734-1 | NP 6600 120/240 55/27 60 3600 | 2700 | Bottom out | Universal 92116 |
| 9735-1 | Q 5500 120/240 46/23 60 3600 | 2570 | Bottom out | Universal 92116 |
| 9736-1 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out |
| LOP | Low Oil Pressure |
| HTO | High Oil Temperature |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Engine won't crank. | 1. 15 amp fuse is blown 2. Loose, corroded or defective battery cables. 3. Defective engine Start/Stop switch. 4. Defective starter contactor. 5. Defective starter motor. 6. Low Battery Voltage. | 1. Replace 15 amp fuse 2. Tighten, clean or replace battery cables as necessary. 3. Replace Start/Stop switch. 4. Replace contactor. 5. Replace starter motor. 6. Charge or replace battery. |
| Engine cranks but won't start. | 1. Out of fuel. 2. Fuel pump is defective. 3. Open Wire #14 from Eng. Control Bd. 4. Engine is flooded. 5. Spark plug defective. | 1. Replenish fuel. 2. Replace fuel pump. 3. Reconnect wire. 4. Wait 5-10 min. before trying. 5. Clean, regap or replace plug. |
| Engine starts hard, runs rough. | 1. Air cleaner plugged or damaged 2. Defective spark plug. | 1. Clean or replace as needed. 2. Clean, regap or replace plug. |
| Engine starts, shuts down when Start/Stop switch is released. | 1. Engine oil is low. 2. Engine is overheated. 3. Defective Low Oil Pressure System 4. Defective Engine Control Board 5. Defective Computer Control Board | 1. Check oil; add as needed. 2. Check adequate ventilation. 3. Have serviced/replaced. 4. Have board serviced/replaced. 5. Have board serviced/replaced. |
| Start/Stop switch at Stop, engine continues to run. | 1. Defective Start/Stop switch 2. Open/disconnected wire #18 between Start/Stop switch and Engine Control Bd. 3. Open/disconnected wire #0 between Start/Stop switch & Engine Control Bd. | 1. Replace switch. 2. Reconnect or close wire. 3. Reconnect or close wire. |
| No AC output from generator. | 1. Check circuit breaker. 2. Check vehicle circuit breaker & fuses. 3. Transfer sw. set to NORMAL position. 4. Generator internal failure | 1. Reset to ON or CLOSED. 2. Reset and replace if necessary. 3. Set to GENERATOR position. 4. Take generator to an Authorized Generac facility. |
| NO-LOAD VOLTAGE & FREQUENCY GOOD | ZERO VOLTS NO-LOAD FREQUENCY LOW OR ZERO VOLTAGE & BOTH HIGH RESIDUAL VOLTS FREQUENCY OR LOW GOOD | GO TO PROBLEM 1 GO TO PROBLEM 2 GO TO PROBLEM 3 GO TO PROBLEM 4 |
| FREQUENCY GOOD BUT VOLTAGE LOW OR RESIDUAL | TEST 2- CHECK & ADJUST ENGINE GOVERNOR GO TO TEST 6 GO TO TEST 7 | |
| FREQUENCY AND VOLTAGE BOTH READ ZERO | TEST 14- TEST 13- CHECK MAIN CIRCUIT BREAKERS MAIN CIRCUIT BREAKERS GOOD OPEN BAD CLOSE MAIN BREAKER(S) REPLACE BAD BREAKER(S) GO TO TEST 12 | |
| EXCESSIVE VOLTAGE/FREQUENCY DROOP WHEN LOAD IS APPLIED | TEST 16- CHECK LOAD WATTS & AMPERAGE TEST 15- CHECK LOAD VOLTAGE NOT OVERLOADED & FREQUENCY ; GOOD OVERLOADED END TEST | |
| PRIMING FUNCTION DOES NOT WORK | REDUCE LOAD TEST 17- CHECK ENGINE POWER TEST 19- TEST 18- TRY ENGINE STILL CRANKING THE CRANKS WON'T sen PRIMER ENGINE NORMALLY PRIME SWITCH GO TO PROBLEM 6 | |
| ENGINE WILL NOT CRANK | TEST 21- CHECK 15 AMP FUSE GOOD TEST 22- CHECK BATTERY & CABLES FUSE BAD REPLACE FUSE RECHARGE OR REPLACE BATTERY CLEAN, REPAIR OR REPLACE BAD CABLE(S) TEST 23- CHECK TEST 24- CHECK POWER SUPPLY START-STOP TO ENGINE CIRCUIT BOARD GOOD BAD CHECK WIRING AND REPLACE WIRE CONNECTIONS. DEFECTIVE REPAIR, RECONNECT SWITCH OR REPLACE BAD WIRES AS REQUIRED. TEST 26- CHECK STARTER CONTACTOR TEST 25- CHECK POWER SUPPLY TO WIRE 56 GOOD REPLACE ENGINE CONTROLLER CIRCUIT BOARD ; STARTER CONTACTOR BAD GOOD TEST 27- CHECK REPLACE STARTER MOTOR IF DEFECTIVE STARTER MOTOR | |
| ENGINE CRANKS BUT WON'T START | TEST 28- CHECK FUEL SUPPLY OF UV § WIRE 14 POWER GOOD LOW FUEL REPLENISH FUEL SUPPLY REPLACE ENGINE CONTROLLER CIRCUIT BOARD TEST 30- CHECK FUEL PUMP TEST 31- CHECK FUEL SOLENOID (Q70G MODELS ONLY) GOOD BAD REPLACE PUMP REPLACE SOLENOID TEST 32- CHECK IGNITION SPARK WEAK OR NO SPARK CLEAN AND REGAP OR REPLACE SPARK PLUG TEST 34- CHECK IGNITION POWER SUPPLY BAD REPLACE ENGINE CIRCUIT BOARD TEST 36- CHECK CARBURETION GOOD ENGINE RUNS OK NOW BAD STOP TESTS ADJUST, REPAIR OR REPLACE AS NECESSARY | |
| ENGINE STARTS HARD AND RUNS ROUGH | TEST 32- CHECK IGNITION SPARK TEST 33- CHECK ENGINE MISS IS APPARENT BAD CLEAN & REGAP OR REPLACE SPARK PLUG TEST 35- TEST IGNITION SYSTEM TEST 34- CHECK IGNITION POWER SUPPLY BAD REPLACE ENGINE CIRCUIT BOARD TEST 37- CHECK CHOKE OPERATION TEST 36- CHECK CARBURETION GOOD ENGINE RUNS OK NOW BAD STOP TESTS ADJUST, REPAIR OR REPLACE AS NECESSARY | |
| Engine Starts and Then Shuts Down | OIL LEVEL LOW | REPLENISH OIL |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
26| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 14-19 | O-Ring (Item 17) | 1 | Seal | buy |
| 14-2 | Valley Cover (Item 14 in Figure 8-1) | 1 | Air cleaner | woodline $36.55 |
| 14-21 | Spark Plug Boot (Item 19) | 1 | Spark plug | buy |
| 14-6 | Valley Cover (Item 14 in Figure 8-3) | 1 | Air cleaner | buy |
| 75252 | Carburetor Overhaul Kit | 1 | Carburetor | buy |
| 14-10 | No. 1 Cylinder Base Cover (Item 8) | 1 | Service part / kit | buy |
| 14-11 | M8-1.25 x 1.25 Hex Head Capscrew (Item 9) | 1 | Service part / kit | dieselfreak $3.99 |
| 14-12 | M6 Lockwasher (Item 10) | 1 | Service part / kit | yemparts $66.79 |
| 14-13 | 2/8"-16 x 1-1/4" Screw (Taptite) (Item 11) | 1 | Service part / kit | dieselfreak $3.99 |
| 14-14 | Starter Cover (Item 12) | 1 | Service part / kit | buy |
| 14-15 | Crankease Wrapper (Item 13) | 1 | Service part / kit | buy |
| 14-16 | Snap Bushing (Item 14) | 1 | Service part / kit | dieselfreak $3.99 |
| 14-17 | Rubber Grommet (Item 15) | 1 | Service part / kit | ddtp $18.90 |
| 14-18 | Rubber Grommet (Item 16) | 1 | Service part / kit | buy |
| 14-20 | Oil Fill Plug (Item 18) | 1 | Service part / kit | buy |
| 14-22 | No. 2 Cylinder Ground Wire (Item 20) | 1 | Service part / kit | buy |
| 14-23 | Foam Tape (Item 21) | 1 | Service part / kit | buy |
| 14-24 | No. 1 Cylinder Ground Wire (Item 22) | 1 | Service part / kit | buy |
| 14-25 | Oil Drain Decal (Item 23) | 1 | Service part / kit | buy |
| 14-3 | No. 2 Cylinder Base Cover (Item 2) | 1 | Service part / kit | buy |
| 14-4 | M5 x 10mm Screw (Item 3) | 1 | Service part / kit | buy |
| 14-5 | No. 2 Cylinder Wrapper (Item 4) | 1 | Service part / kit | buy |
| 14-7 | No. 1 Cylinder Wrapper (Item 5) | 1 | Service part / kit | buy |
| 14-8 | Barrel Wrapper (Item 6) | 1 | Service part / kit | buy |
| 14-9 | M6-1.00 x 12mm Capscrew (Item 7) | 1 | Service part / kit | buy |
| 89870 | Fuel Solenoid Shutoff (Q70) | 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.
Available documents
Installation manualOwner's manualParts manualService manual