Service parts for the PowerPact 5.6 kVA 50 Hz
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredCooling system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas / LP Vapor |
|---|---|
| Frequency | 50.0 Hz |
| Oil capacity | 1.1 L |
| Voltage options | 220 V |
| Phase | 1 |
| Rated current | 25.5 A |
| Circuit breaker | 32 A |
| Battery group | U1 |
| Battery cranking | 300 CCA |
| Battery voltage | 12 V |
| Starting system | 12 V DC |
| Max ambient | 50 °C |
| Dry weight | 330 kg |
Maintenance & consumables
for the OHV GA-420| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Filter | P245-036 | Amazon eBay | ||
| Fuel filter | Fuel Filter | P245-039 | Amazon eBay | ||
| Oil filter | Oil Filter | P245-038 | Amazon eBay | ||
| Battery | VOM | — | |||
| Belt | Belt | P245-032 | Amazon eBay | ||
| Coolant | 4.6 L | — | 1000 hr | ||
| Coolant filter | Coolant Filter | P245-034 | Amazon eBay | ||
| Oil | level | 1.5 l | — | 25 hr | |
| Spark plug | — | 365 hr |
Service intervals
18| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Oil level | Check | 24 hr | CorePower; monthly or 24 hours of continuous operation | |
| Air cleaner | Clean | 50 hr | 3 mo | PowerPact; 3 months or 50 hours |
| Oil | Change | 100 hr | 12 mo | First service — PowerPact; change after first 20 hours or 1 month, then 100 hours or 6 months |
| Oil filter | Change | 100 hr | 12 mo | First service — CorePower; change after first 8 hours, then every 100 hours or 1 year |
| Spark plug | Inspect | 100 hr | 6 mo | PowerPact; 6 months or 100 hours |
| Complete tune-up | Other | 200 hr | 12 mo | CorePower; to be completed by a dealer |
| Spark plug | Replace | 200 hr | 12 mo | CorePower; 1 year or 200 hours |
| Air cleaner | Replace | 300 hr | 12 mo | PowerPact; 1 year or 300 hours |
| Spark plug | Change | 300 hr | 12 mo | PowerPact; 1 year or 300 hours |
| Valve clearance | Check | 300 hr | 12 mo | First service — PowerPact; check after first 20 hours, then every 300 hours or 1 year |
| Battery - remove corrosion, ensure dryness | Clean | 12 mo | PowerPact; yearly | |
| Battery charge state | Check | 12 mo | PowerPact; yearly | |
| Battery electrolyte level | Check | 6 mo | CorePower; every 6 months | |
| Battery electrolyte level (unsealed batteries only) | Check | 6 mo | PowerPact; every 6 months | |
| Battery terminals - clean and tighten | Clean | 12 mo | PowerPact; yearly | |
| Fuel lines and connections | Inspect | 1 mo | CorePower; monthly | |
| Vibration, Noise, Leakage | Inspect | 1 mo | PowerPact; monthly | |
| Vibration, Noise, Leakage, Temperature | Inspect | 1 mo | CorePower; monthly |
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
60| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Gap | Spark plug gap | 0.76 mm (0.030 inch) | mm | |
| Pressure | Cylinder leak down tester regulated pressure | 80 | PSI | 90 PSI air source |
| Pressure | Fuel pressure - LP gas - inlet side of fuel solenoid | 10-12 | inches water column | |
| Pressure | Fuel pressure - natural gas - inlet side of fuel solenoid | 5-7 | inches water column | |
| Pressure | Minimum allowable compression pressure | 60 | PSI | cold engine |
| Pressure | Normal oil pressure | 35-40 | psi | engine running |
| Pressure | Oil pressure - shut engine down immediately if below | 4.5 | psi | |
| Pressure | Oil pressure switch rating (single cylinder) | 10 | psi | |
| Resistance | Choke solenoid (component table) | 4 | ohms | |
| Resistance | Choke solenoid coil resistance | ~3.7 | ohms | |
| Resistance | Fuel solenoid FS1 nominal resistance | 14-16 | ohms | |
| Resistance | Main fuel solenoid | 16 | ohms | |
| Resistance | Rotor resistance - CorePower | 40 +/-20 | ohms | |
| Resistance | Rotor resistance - PowerPact | 50 +/-20 | ohms | |
| Resistance | Starter contactor | 8 | ohms | |
| Resistance | Stator DPE winding Blue (2)/Blue (6) - PowerPact | 1.85 | ohms | |
| Resistance | Stator DPE winding Blue/Blue - CorePower | 1.158 | ohms | |
| Resistance | Stator power winding 11/22 - PowerPact 50 Hz | 0.36 | ohms | |
| Resistance | Stator power winding 11/22 - PowerPact 60 Hz | 0.24 | ohms | |
| Resistance | Stator power winding 33/44 - PowerPact 50 Hz | 0.36 | ohms | |
| Resistance | Stator power winding 33/44 - PowerPact 60 Hz | 0.24 | ohms | |
| Resistance | Stator power winding Blue/Black - CorePower | 0.346 | ohms | |
| Resistance | Stator power winding White/Black - CorePower | 0.173 | ohms | |
| Resistance | Stator power winding White/Blue - CorePower | 0.173 | ohms | |
| Resistance | Stator sensing winding Green/White - CorePower | 0.064 | ohms | |
| Resistance | Stator sensing winding White (S1)/Green (S2) - PowerPact | 0.024 | ohms | |
| Resistance | Transfer relay | 115 | ohms | |
| Speed | No-load speed - 50 Hz | 3120 | RPM | 52 Hz |
| Speed | No-load speed - 60 Hz | 3750 | RPM | 62.5 Hz |
| Speed | Over speed shutdown - 50 Hz | 3600 | RPM | for three (3) seconds, or 3750 RPM immediately |
| Speed | Over speed shutdown - 60 Hz | 4320 | RPM | for three (3) seconds, or 4500 RPM immediately |
| Temperature | High oil temperature shutdown | 124 C (255 F) | C | |
| Temperature | High oil temperature switch - contacts close at | 293 | F | |
| Temperature | High oil temperature switch test range | 283-305 F (139-151 C) | F | |
| Torque | 3/8-16 screw to mounting foot | 5-8 | ft-lbs | |
| Torque | Governor lever clamp bolt - CorePower | 70 | in-lbs | |
| Torque | Governor lever clamp bolt - CorePower | 8 | Nm | |
| Torque | Governor pinch bolt nut - PowerPact | 62 | in-lbs | |
| Torque | M10 x 1.25 engine to vibration isolator | 15-20 | ft-lbs | |
| Torque | M3 x 0.5 screw into aluminum | 8-10 | in-lbs | |
| Torque | M3 x 0.5 taptite screw into extruded hole | 8-18 | in-lbs | |
| Torque | M5 x 0.5 screw into aluminum | 25-35 | in-lbs | |
| Torque | M5 x 0.8 screw on band clamp | 7.5-9 | ft-lbs | |
| Torque | M5 x 0.8 taptite screw into extruded hole | 25-50 | in-lbs | |
| Torque | M6 x 1.0 nyloc nut on dead front plate | 40-50 | in-lbs | |
| Torque | M6 x 1.0 screw flange nuts - airbox to cylinder head | 7-8 | ft-lbs | |
| Torque | M6 x 1.0 screw into aluminum | 50-60 | in-lbs | |
| Torque | M6 x 1.0 screw on band clamp | 14-15 | ft-lbs | |
| Torque | M6 x 1.0 taptite screw into extruded hole | 50-96 | in-lbs | |
| Torque | M8 x 1.0 nuts - exhaust to cylinder head | 20-22 | ft-lbs | |
| Torque | M8 x 1.25 taptite screw into extruded hole | 15-20 | ft-lbs | |
| Torque | M8 x 1.25 vibration isolator to base | 20-22 | ft-lbs | |
| Torque | Rocker arm jam nut | 70 to 106 | in-lbs | |
| Torque | Rotor bolt - CorePower | 30 | ft-lbs | |
| Torque | Rotor bolt - PowerPact | 27-33 | ft-lbs | |
| Torque | Stator bolts - CorePower | 6 | ft-lbs | |
| Torque | Stator bolts - PowerPact | 72 | in-lbs | |
| Valve clearance | Exhaust valve - CorePower | 0.007-0.009 in (0.18-0.22 mm) | in | cold |
| Valve clearance | Exhaust valve - PowerPact | 0.002-0.004 in (0.05-0.1 mm) | in | cold |
| Valve clearance | Intake valve - CorePower | 0.005-0.007 in (0.13-0.17 mm) | in | cold |
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 |
|---|---|---|---|---|---|
| Engine oil | Synthetic SAE 5W-30 | API Service Class SJ, SL or better | for all temperature ranges; do not use synthetic until 50 hours of operation | ||
| Engine oil | SAE 10W-30 | API Service Class SJ, SL or better | -23°C to 4°C | between 40 and -10 F (4 and -23 C) | |
| Engine oil | SAE 30 | API Service Class SJ, SL or better | above 0°C | above 32 F (0 C); do not use special additives | |
| Fuel | LP vapor | at least 2,520 BTU per cubic foot | vapor withdrawal system only; fuel pressure must never drop below 10 inches water column | ||
| Fuel | Natural gas | at least 1,000 BTU per cubic foot | fuel pressure must never drop below 5 inches water column |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
12Test 13 - Check and Adjust Engine Governor (CorePower) adjustment
Tools: 13 mm wrench, frequency meter
- Cycle throttle to confirm throttle rod and anti-lash spring move freely.
- Loosen the governor clamp bolt (13 mm).
- Hold governor lever wide open; rotate governor shaft clockwise fully.
- Tighten governor lever clamp bolt to 70 in-lbs (8 Nm).
- Connect a frequency meter across the AC output leads (MLCB).
- Start the generator and warm up at no-load.
- Turn the adjust nut to obtain a frequency reading of 62.5 Hz.
Test 70 - Check and Adjust Valves adjustment
Tools: feeler gauge, socket, wrench
- Ensure the engine is cool before checking.
- Remove spark plug wire and position it away from the plug.
- Remove the spark plug.
- Rotate the engine clockwise until piston is at TDC compression stroke.
- Remove the four screws attaching the valve cover.
- Loosen rocker jam nut; set clearance with a feeler gauge.
- CorePower: intake 0.005-0.007 in; exhaust 0.007-0.009 in.
- PowerPact: intake and exhaust 0.002-0.004 in.
- Tighten jam nut to 70 to 106 in-lbs; recheck clearance; install new gasket.
Check Compression diagnostic
Tools: compression gauge
- Remove the spark plug.
- Insert a compression gauge into the cylinder.
- Crank the engine until there is no further increase in pressure.
- Record the highest reading obtained.
- Minimum allowable compression pressure for a cold engine is 60 PSI.
Test 1 - Check Main Circuit Breaker diagnostic
Tools: Volt-Ohm-Meter
- Set VOM to R x 1 scale and zero the meter.
- With generator shut down, disconnect all wires from breaker terminals.
- Connect probes to Wire 11 (Blue) terminal and the E1 terminal.
- Set breaker Closed; VOM should read CONTINUITY.
- Set breaker Open; VOM should indicate INFINITY.
- Repeat with probes across Wire 44 (Black) and the E2 terminal.
Test 6 - Resistance Check of Rotor and Rotor Circuit diagnostic
Tools: Volt-Ohm-Meter
- Disconnect the Red (Wire 4) and White (Wire 1) wires from the regulator.
- Set a VOM to measure resistance.
- Measure across the brush wires and record the resistance.
- CorePower: approximately 40 ohms +/-20. PowerPact: approximately 50 ohms +/-20.
Reconfigure the Fuel System maintenance
Tools: needle nose pliers
- Locate fuel throttle assembly mounted to engine intake.
- Remove hose clamp and hose from throttle assembly.
- Remove Natural Gas (larger ID) fuel jet from fuel inlet.
- Obtain the Propane fuel jet (smaller ID) supplied loose.
- Verify the O-ring is installed in the fuel jet groove.
- Insert the Propane fuel jet into the end of the fuel inlet.
- Reinstall hose and clamp onto fuel inlet and secure.
- Verify the hose has not been kinked in any way.
Before Starting operation
⚠ Do not fill oil above the FULL mark.
- Ensure the generator is OFF.
- Set the generator main circuit breaker to OFF (or OPEN).
- Turn off all breakers that will be powered by the generator.
- Check crankcase oil level; fill to dipstick FULL mark.
- Check fuel supply; purge and leak test lines; open all fuel shutoff valves.
Generator Activation operation
- Locate and record the generator serial number.
- Contact Generac to obtain your activation code.
- Hold the OFF button for 3 seconds; all LEDs flash twice.
- Enter the 6-press code using AUTO, OFF and SET EXERCISE within 20 seconds.
- If incorrect, AUTO/OFF/MANUAL flash 3 times; return to Step 3.
- If correct, all LEDs scroll bottom to top 5 times.
Manual Start and Transfer to Standby operation
⚠ Engine will crank and start!
- Set the controller switch to OFF mode.
- Set the generator main line circuit breaker to Open.
- Locate a means of Utility disconnect and set it to OFF.
- Manually actuate the breaker to Standby in the transfer switch.
- Set the controller switch to MANUAL mode; engine cranks and starts.
- Warm up 1-2 minutes; set the generator MLCB to Closed.
Retransfer to Utility and Manual Shutdown operation
- Set the generator MLCB to the OPEN position.
- Allow the generator to run at no-load several minutes to cool down.
- Set the generator controller to OFF mode.
- Locate a means of Utility disconnect and set it to OFF.
- Manually actuate the breaker in the transfer switch to Utility.
- Restore Utility voltage to the transfer switch.
- Set the generator controller to AUTO mode.
Select Automatic Operation operation
- Ensure transfer mechanism is in the Utility position.
- CLOSE the Utility source main line circuit breaker.
- Verify Utility voltage at terminals N1 and N2.
- Actuate the generator main line circuit breaker to Closed.
- Set the generator controller to the AUTO mode.
Shut Generator Down While Under Load operation
⚠ If turning the unit off for longer than 24 hours, remove the F1 fuse from the generator controller.
- Turn the main utility disconnect OFF.
- Turn the main line circuit breaker (MLCB) on the generator to OFF (OPEN).
- Turn the generator OFF.
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 engine is in the Generac PowerPact 5.6 kVA 50 Hz?
The Generac PowerPact 5.6 kVA 50 Hz is powered by the OHV GA-420 engine.
What fuel type does the Generac PowerPact 5.6 kVA 50 Hz take?
The Generac PowerPact 5.6 kVA 50 Hz runs on Natural Gas / LP Vapor.
What is the oil capacity of the Generac PowerPact 5.6 kVA 50 Hz?
The None OHV GA-420 engine in the Generac PowerPact 5.6 kVA 50 Hz has an oil capacity of 1.1 liters.
How much does the Generac PowerPact 5.6 kVA 50 Hz weigh?
The Generac PowerPact 5.6 kVA 50 Hz has a dry weight of 330 kg (727 lb).
What voltages is the Generac PowerPact 5.6 kVA 50 Hz available in?
The Generac PowerPact 5.6 kVA 50 Hz is offered in 220 V, 1-phase.
What size battery does the Generac PowerPact 5.6 kVA 50 Hz need?
The Generac PowerPact 5.6 kVA 50 Hz uses 12 V each, 300 CCA, group U1, per the manufacturer specification sheet. The starting system is 12 V DC.
What oil filter does the Generac PowerPact 5.6 kVA 50 Hz use?
The Generac PowerPact 5.6 kVA 50 Hz uses oil filter part number P245-038.
Which fuel filter part number does the Generac PowerPact 5.6 kVA 50 Hz take?
The Generac PowerPact 5.6 kVA 50 Hz uses fuel filter part number P245-039.
What air filter fits the Generac PowerPact 5.6 kVA 50 Hz?
The Generac PowerPact 5.6 kVA 50 Hz uses air filter part number P245-036.
Troubleshooting
6Fault codes
| Code | Meaning |
|---|---|
| FAULT_01 | Generator Produces Zero Voltage or Residual Voltage |
| FAULT_02 | Generator Produces Low Voltage at No-Load |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Generator Produces Zero Voltage or Residual Voltage | TEST 4 – PERFORM FIXED EXCITATION / ROTOR AMP DRAW D G A C B REPLACE VOLTAGE REGULATOR TEST 7 – CHECK BRUSHES & SLIP RINGS BAD REPLACE ROTOR AND STATOR BAD TEST 1 – CHECK MAIN CIRCUIT BREAKER TEST 6 – RESISTANCE CHECK OF ROTOR AND ROTOR CIRCUIT TEST 6 – RESISTANCE CHECK OF ROTOR AND ROTOR CIRCUIT TEST 9 – TEST STATOR | REPLACE Rotor Only, REPLACE Stator Only, REPLACE Rotor and Stator, PERFORM INSULATION RESISTANCE TEST |
| Generator Produces Low Voltage at No-Load | TEST 4 – PERFORM FIXED EXCITATION / ROTOR AMP DRAW F E H BAD REPLACE Rotor and Stator BAD TEST 9 – TEST STATOR GOOD TEST 6 – RESISTANCE CHECK OF ROTOR AND ROTOR CIRCUIT TEST 6 – RESISTANCE CHECK OF ROTOR AND ROTOR CIRCUIT | PERFORM ROTOR INSULATION RESISTANCE TEST, REPLACE Defective Voltage Regulator, ADJUST Voltage Regulator, CHECK AC Output Frequency, ADJUST Engine Governor |
| Generator Produces High Voltage at No-Load | TEST 11 – CHECK AC OUTPUT VOLTAGE TEST 14 – ADJUST VOLTAGE REGULATOR TEST 12 – CHECK AC OUTPUT FREQUENCY TEST 13 - ADJUST ENGINE GOVERNOR | REPLACE Defective Voltage Regulator |
| Voltage and Frequency Drop Excessively When Loads Are Applied | TEST 9 – CHECK STATOR AC POWER WINDINGS | NOT PROVIDED IN THE TEXT |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Generac PowerPact 5.6 kVA 50 Hz troubleshooting guide (8 entries) →
Repair guides
12- Before Starting
- Check Compression
- Generator Activation
- Manual Start and Transfer to Standby
- Reconfigure the Fuel System
- Retransfer to Utility and Manual Shutdown
- Select Automatic Operation
- Shut Generator Down While Under Load
- Test 1 - Check Main Circuit Breaker
- Test 13 - Check and Adjust Engine Governor (CorePower)
- Test 6 - Resistance Check of Rotor and Rotor Circuit
- Test 70 - Check and Adjust Valves
Step-by-step procedures compiled from the Generac service manual for this model.
Parts
10| Part # | Description | Qty | System | |
|---|---|---|---|---|
| P245-031 | Spark Plug | 1 | Spark plug | Amazon eBay |
| P245-032 | Belt | 1 | Belt | Amazon eBay |
| P245-033 | Battery | 1 | Battery | Amazon eBay |
| P245-034 | Coolant Filter | 1 | Coolant filter | Amazon eBay |
| P245-036 | Air Filter | 1 | Air filter | Amazon eBay |
| P245-038 | Oil Filter | 1 | Oil filter | Amazon eBay |
| P245-039 | Fuel Filter | 1 | Fuel filter | Amazon eBay |
| 0G7172 | Piercing probes (alternative) | 1 | Service part / kit | Amazon eBay |
| 0J09460SRV | flexible pin leads | 1 | Service part / kit | Amazon eBay $80.00 |
| AC89 | High quality piercing probes from Fluke | 1 | Service 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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 50% | 3.1 | 0.82 |
| Standby | 100% | 5.56 | 1.47 |
Available documents
Service manual — 0H9174 (Generac)
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.