Home›Generac›Generac Q-55LP

Generac Q-55LP Generator Set

The Generac Q-55LP is a LP gas (propane) generator set powered by a Generac GN-480 engine. It is available at 120 V and 240 V, single-phase, 60 Hz and rated 45.8 A. It holds about 1.7 L (0.4 gal) of oil. The set measures 25×18.5×15.75 mm (1.0×0.7×0.6 in) and weighs about 215 kg (474 lb).

0.48 L
Displacement
1.7 L
Oil capacity
1
Document types

How to read your Generac serial & model number →

Service parts for the Q-55LP

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
73123Air filter$25.00eBay

Fuel system

1 required
87769Fuel filter$6.96NAPA

Oil system

1 required
70185Oil filter$9.09NAPA

Belts

1 required

Ignition

1 required
072347Spark plug$1.99eBay

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelLP gas (propane)
Frequency60.0 Hz
Oil capacity1.7 L
Voltage options120 V, 240 V
Phase1
Rated current45.8 A
Battery voltage12 V
Dimensions (L×W×H)25×18×15 mm
Dry weight215 kg

Engine

Generac GN-480
Oil capacity1.7 L
Displacement0.48 L
Aspirationnatural
Rated speed3600 rpm

Maintenance & consumables

for the Generac GN-480
ItemSpecCapacityPart #Interval
Air filterAIR FILTER (FLAME RETARDENT)73123100 hr Amazon eBay $25.00
Fuel filterGasoline Only87769100 hr Amazon eBay $18.99 NAPA $6.96
Oil filterFILTER, OIL (FRAM#PH3614)70185100 hr Amazon eBay $18.99 NAPA $9.09 KuduParts $11.00
Batteryfill with distilled water only—12 hr
BeltBELT (POLY V 4L)-40 inch75216360 hr Amazon eBay NAPA $69.33
OilSAE 10W-301.7 L—100 hr
Spark plug0.030 inch gap072347100 hr eBay $1.99

Service intervals

17
ItemActionHoursMonthsNotes
Engine crankcase oil levelCheck8 hrat least every eight hours of operation, or before each use
Air cleaner foam pre-cleanerClean25 hr3 moEvery three months or every 25 hours, whichever occurs first
All fluid levelsCheck25 hrFirst service — 25-Hour Check Up
Cooling and ventilation openings on the vehicleInspect25 hrFirst service — 25-Hour Check Up
Engine carburetor adjustmentsCheck25 hrFirst service — Part of 25-Hour Check Up
Engine crankcase oil and oil filterChange25 hrFirst service — 25-Hour Check Up after break-in period
Engine exhaust systemInspect25 hrFirst service — Part of 25-Hour Check Up
Engine ignition systemCheck25 hrFirst service — Part of 25-Hour Check Up
Entire electrical systemInspect25 hrFirst service — Part of 25-Hour Check Up
Foam pre-cleanerClean25 hr3 moClean and re-oil every three months or every 25 hours, whichever occurs first
Engine oilChange50 hrFirst service — Change more frequently under heavy load or high ambient temperature
Air intake screenClean100 hrClean all foreign material at least once every 100 hours; clean more often if necessary
Oil filterReplace100 hrFirst service — Replace after first 25 hours of operation, every 100 operating hours thereafter
Spark plugClean100 hrClean and set gap to 0.030 inch (0.76mm) every 100 hours
Generator exercise runTest168 hrStart and operate at least once every seven days; run at least 30 minutes
Battery state of charge and conditionTest6 moEvery six months have checked by an automotive service facility using a battery hydrometer
Cooling and ventilation openingsInspectFirst service — Part of 25-Hour Check Up

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

24
TypeItemValueUnitCondition
GapSpark plug gap0.030inch
GapSpark plug gap0.8mm
OtherCompression ratio8.6 to 1
OtherEngine crankcase capacity1.5U.S. quarts
OtherEngine displacement480cc
OtherEngine displacement570cc
OtherGrounding conductor minimumNo. 8 AWGcopper wire
OtherRated horsepower16hp at 3600 rpm
OtherRated horsepower19hp at 3600 rpm
OtherRated max. continuous AC output5500watts (5.5 kW)120 V
OtherRated max. continuous AC output7000watts (7.0 kW)120 V
OtherRated max. continuous current22.9AC amps240 V
OtherRated max. continuous current29.1AC amps240 V
OtherRated max. continuous current45.8AC amps120 V
OtherRated max. continuous current58.3AC amps120 V
OtherRotor poles2poles
PressureFuel inlet pressure required0.39PSI
PressureFuel inlet pressure required11inch WC
PressureLow oil pressure shutdownabout 8-10PSIoil pressure switch closes below this
PressureLow oil pressure shutdown switch actuation8-10PSIbelow this pressure switch contacts close and engine shuts down
SpeedEngine governed speed2500rpm
SpeedRotor RPM3600rpm
VoltageAC output voltage regulation120volts at 60 Hzvoltage-to-frequency ratio is 2-to-1
VoltageStarter system12volts DC electric

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

FluidGradeStandardAmbientCapacityNotes
Engine oilSAE 10W-30For Service SF1.5 U.S. quartsHigh quality detergent oil; do not pour in any additives; crankcase can hold about 1 quart (950ml) to fill
FuelLP gas (propane)LP-vapour withdrawal fuel system as standard; requires inlet pressure of 11" WC (0.39 PSI)
OtherDistilled waterFor battery cells only; DO NOT USE TAP WATER IN BATTERY

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

12
Battery Inspection and Service maintenance

⚠ Storage batteries give off explosive hydrogen gas

⚠ Battery electrolyte is caustic sulfuric acid

Tools: Automotive type battery hydrometer

  1. Once weekly inspect battery posts and cables for tightness and corrosion.
  2. Clean and/or tighten as necessary.
  3. Check battery fluid level and fill with distilled water only.
  4. Every six months have state of charge and condition checked with an automotive hydrometer.
Change Engine Oil maintenance

⚠ DO NOT FILL ABOVE 'FULL' MARK

  1. Warm up engine for at least five minutes, then shut down.
  2. With engine still warm, clean area around oil drain plug and remove plug.
  3. Drain oil completely into a suitable container.
  4. Install and tighten drain plug.
  5. Remove oil dipstick and fill crankcase with recommended oil.
  6. Install and tighten dipstick cap before operating engine.
Change Oil Filter maintenance
  1. Turn oil filter counterclockwise to remove.
  2. Coat gasket of new filter with engine oil.
  3. Turn new filter clockwise until gasket contacts filter adapter.
  4. Tighten an additional 3/4 to one turn by hand.
  5. Run engine and check for leaks.
Checking Engine Oil Level maintenance

⚠ DO NOT FILL ABOVE 'FULL' MARK

  1. Be sure generator is as level as possible.
  2. Remove oil dipstick and wipe dry with clean, lint-free cloth.
  3. Install and tighten oil dipstick, then remove again.
  4. Oil should be at dipstick FULL mark; add recommended oil to FULL mark only.
  5. Install and tighten oil dipstick cap before operating engine.
Clean Air Intake Screen maintenance
  1. Clean all foreign material from the air intake screen.
  2. Inspect area around generator exhaust muffler and remove grass, leaves and dirt.
Engine Air Cleaner — Clean and Re-oil Pre-cleaner maintenance
  1. Turn KNOB counterclockwise to loosen.
  2. Remove COVER, FOAM PRE-CLEANER AND PAPER FILTER.
  3. Remove foam pre-cleaner from cover.
  4. Wash foam pre-cleaner in liquid detergent and water.
  5. Wrap in a cloth and squeeze dry.
  6. Saturate foam pre-cleaner in engine oil; squeeze to remove excess oil.
  7. Install foam pre-cleaner into cover, followed by paper filter.
  8. Insert bottom locking tab of cover into slot and install.
Out of Service Protection maintenance

⚠ Never store the battery on any concrete or dirt floor

  1. Start engine and let it warm up.
  2. While engine is still warm, drain oil completely; refill crankcase with recommended oil.
  3. Attach a tag to the engine indicating oil viscosity and classification.
  4. Remove spark plug(s) and add about two or three tablespoons of clean engine oil into threaded opening(s).
  5. Crank engine several times to distribute oil, then install and tighten spark plug(s).
  6. Remove battery and store in a cool, dry room on a wooden board.
  7. Clean and wipe the entire generator.
  8. Shut off fuel supply.
Out of Service Protection (Storage) maintenance

⚠ Never store the battery on any concrete or dirt floor

  1. Start engine and let it warm up.
  2. While warm, drain oil completely; refill crankcase with recommended oil.
  3. Attach tag to engine indicating oil viscosity and classification.
  4. Remove spark plug(s) and add two or three tablespoons clean engine oil.
  5. Crank engine several times to distribute oil; install and tighten plug(s).
  6. Remove battery; store in cool dry room on wooden board.
  7. Clean and wipe the entire generator.
  8. Shut off fuel supply.
Return Unit to Service After Storage maintenance

⚠ DO NOT USE TAP WATER IN THE BATTERY

  1. Check tag on engine for oil viscosity and classification; verify correct oil is used.
  2. Check battery; fill all cells with distilled water and recharge to 100%.
  3. Turn OFF all electrical loads, turn on fuel supply, then start engine.
  4. Let engine warm up.
  5. Apply electrical loads to at least 50% of the unit's rated wattage capacity.
  6. When engine is thoroughly warmed up, turn off electrical loads and shut it down.
Service Engine Air Cleaner maintenance
  1. Turn knob counterclockwise to loosen.
  2. Remove cover, foam pre-cleaner and paper filter.
  3. Remove foam pre-cleaner from cover.
  4. Wash pre-cleaner in liquid detergent and water.
  5. Wrap pre-cleaner in cloth and squeeze dry.
  6. Saturate pre-cleaner in engine oil; squeeze out excess.
  7. Install pre-cleaner into cover, followed by paper filter with tabs locked into slots.
  8. Insert bottom locking tab of cover into slot and install assembly.
Service Engine Spark Plug maintenance

⚠ DO NOT BLAST CLEAN SPARK PLUG

⚠ Sparking can occur if wire terminal does not fit firmly over spark plug terminal end

Tools: Wire brush, Commercial solvent, Gap gauge

  1. Clean spark plug by scraping or wire brushing and washing with commercial solvent.
  2. Set plug gap to 0.030 inch (0.76 mm).
Setting Spark Plug Gap maintenance

⚠ DO NOT BLAST CLEAN SPARK PLUG

⚠ Sparking can occur if wire terminal does not fit firmly over spark plug terminal end

  1. Clean spark plug by scraping or wire brushing and washing with commercial solvent.
  2. Set gap to 0.030 inch (0.76mm).

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

VoltagePhaseConnectionLeadsNotes
Grounding/bondingBonding conductor; No. 8 AWG copper wire minimumGround generator by solid mounting to vehicle frame/chassis or by approved bonding conductor. DO NOT disconnect bonding conductor. If replaced, use only flexible No. 8 AWG copper wire minimum.
1201Connection for 120 Volts Only (Figure 1)Dual stator power windings; grounded neutral; CB1These air-cooled Q Series generator sets are equipped with dual stator AC power windings supplying power by a dual 2-wire connection system.
1201Dual 2-wire connection system (120 volts only)Dual stator power windings; grounded neutralFigure 1 — Connection for 120 Volts Only; jumper between circuit breakers must be removed when connecting for 120/240 volts
120/2401Reconnectable dual voltage outputDual stator power windingsAll units are reconnectable to 120 and/or 240 volts, dual voltage output; units are not listed per RVIA/ANSI when reconnected for dual voltage output
120/2401Reconnected for dual voltage AC outputDual stator power windingsBe sure to remove the jumper between the circuit breakers when connecting for 120/240 volts. If reconnected for dual voltage, the unit is no longer RVIA listed.

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

Which engine powers the Generac Q-55LP?

The Generac Q-55LP is powered by the Generac GN-480 engine.

What fuel type does the Generac Q-55LP take?

The Generac Q-55LP runs on LP gas (propane).

What's the oil capacity on a Generac Q-55LP?

The Generac GN-480 engine in the Generac Q-55LP has an oil capacity of 1.7 liters.

How much does the Generac Q-55LP weigh?

The Generac Q-55LP has a dry weight of 215 kg (473 lb).

What voltages is the Generac Q-55LP available in?

The Generac Q-55LP is offered in 120 V, 240 V, 1-phase.

What oil filter fits the Generac Q-55LP?

The Generac Q-55LP uses oil filter part number 70185.

Which fuel filter part number does the Generac Q-55LP take?

The Generac Q-55LP uses fuel filter part number 87769.

Which air filter part number does the Generac Q-55LP take?

The Generac Q-55LP uses air filter part number 73123.

Troubleshooting

26

Symptoms & remedies

SymptomCauseRemedy
Engine won't crank15 amp fuse is blownReplace 15 amp fuse
Engine won't crankLoose corroded or defective battery cablesTighten, clean or replace as necessary
Engine won't crankDefective engine Start/Stop switchReplace Start/Stop switch
Engine won't crankDefective starter contactorReplace contactor
Engine won't crankDefective starter motorReplace starter motor
Engine won't crankLow Battery VoltageCharge or replace battery
Engine cranks but won't startOut of fuelReplenish fuel
Engine cranks but won't startFuel pump is defectiveReplace fuel pump
Engine cranks but won't startOpen Wire #14 from Eng. Control Bd.Reconnect wire
Engine cranks but won't startEngine is floodedWait 5-10 min. before trying
Engine cranks but won't startSpark plug defectiveClean, regap or replace plug
Engine starts hard, runs roughAir cleaner plugged or damagedClean or replace as needed
Engine starts hard, runs roughDefective spark plugClean, regap or replace plug
Engine starts, shuts down when Start/Stop switch is releasedEngine oil is lowCheck oil; add as needed
Engine starts, shuts down when Start/Stop switch is releasedEngine is overheatedCheck adequate ventilation
Engine starts, shuts down when Start/Stop switch is releasedDefective Low Oil Pressure SystemHave serviced/replaced
Engine starts, shuts down when Start/Stop switch is releasedDefective Engine Control BoardHave board serviced/replaced
Engine starts, shuts down when Start/Stop switch is releasedDefective Computer Control BoardHave board serviced/replaced
Start/Stop switch at Stop, engine continues to runDefective Start/Stop switchReplace switch
Start/Stop switch at Stop, engine continues to runOpen/disconnected wire #18 between Start/Stop switch and Engine ControlReconnect or close wire
Start/Stop switch at Stop, engine continues to runOpen/disconnected wire #0 between Start/Stop switch & Engine Control Bd.Reconnect or close wire
Start/Stop switch at Stop, engine continues to runDefective Engine Control BoardReplace board
No AC output from generatorCheck circuit breakerReset to ON or CLOSED
No AC output from generatorCheck vehicle circuit breaker & fusesReset and replace if necessary
No AC output from generatorTransfer sw. set to NORMAL positionSet to GENERATOR position
No AC output from generatorGenerator internal failureTake generator to an Authorized Generac facility

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

Repair guides

4

Step-by-step procedures compiled from the Generac service manual for this model.

Parts

240
Part #DescriptionQtySystem
030340HOSE ¼ ID1Hose Amazon eBay
047290HOSE 3/8 ID SINGLE BRAID (16” LG)1Hose Amazon eBay $10.00
057822CLAMP HOSE #8 .53-1.002Hose Amazon eBay
066386ASSEMBLY, BRUSH HOLDER1Brush Amazon eBay $29.83
066480AIR CLEANER GASKET1Gasket Amazon eBay
067158INTAKE MANIFOLD GASKET1Gasket Amazon eBay
067805OIL SEAL1Seal Amazon eBay
067866AO-RING1Seal Amazon eBay $7.99
067871O-RING, CAP1Seal Amazon eBay
067888OIL SEAL ASSEMBLY1Seal Amazon eBay
067895INTAKE MANIFOLD GASKET2Gasket Amazon eBay
067897EXHAUST GASKET (NOT SHOWN)2Gasket Amazon eBay $5.00
067920VALVE COVER GASKET2Gasket Amazon eBay $17.67
067924OIL SEAL ASSEMBLY1Seal Amazon eBay
068548GASKET, OIL FILTER ADAPTER1Gasket Amazon eBay
068554AGOVERNOR SHAFT SEAL1Seal Amazon eBay
068573OIL PUMP O-RING1Seal Amazon eBay
069325OIL SUMP GASKET1Gasket Amazon eBay
069332CYLINDER HEAD GASKET2Gasket Amazon eBay $29.00
069336OIL SUMP GASKET1Gasket Amazon eBay
069341FOAM PRE-CLEANER1Air filter Amazon eBay
069379CARBURETOR MOUNTING GASKET2Gasket Amazon eBay $16.00
070122VALVE STEM SEAL4Seal Amazon eBay
070169SEALING WASHER4Seal Amazon eBay
070185FILTER, OIL1Oil filter Amazon eBay $30.00 NAPA $3.59 FridayParts $45.99
070506OIL GALLEY O-RING1Seal Amazon eBay
070547OIL PUMP ASSEMBLY1Pump Amazon eBay
070594CARBURETOR MOUNTING GASKET1Gasket Amazon eBay
070596BREATHER TUBE1Hose Amazon eBay
070597AIR INLET TUBE1Hose Amazon eBay
072315BREATHER GASKET1Gasket Amazon eBay
072347SPARK PLUG2Spark plug eBay $1.99
072375FILTER, FUEL1Fuel filter eBay
072383GASKET, COLLECTOR PAN2Gasket Amazon eBay
073123AIR FILTER (NOT SHOWN)1Air filter Amazon eBay $33.33
073131AIR CLEANER SUPPORT BRACKET1Air filter Amazon eBay
07494810 PSI-SWITCH, OIL PRESSURE3Sensor eBay
074950SWITCH, HIGH TEMPERATURE1Sensor eBay
0749941/2 I.D. X 10" LONG HOSE1Hose Amazon eBay
075216BELT (POLY V 4L)-40"1Belt Amazon eBay
075229SLIDE PAN, GASKET1Gasket Amazon eBay
075253WASHER VALVE COVER SEAL4Seal Amazon eBay
075258ENGINE GASKET KIT1Gasket Amazon eBay $52.49
075272SPARK PLUG TERMINAL2Spark plug eBay
075281SWITCH, HIGH TEMPERATURE1Sensor Amazon eBay $39.00
077643GASKET, EXHAUST OUTLET1Gasket Amazon eBay $13.87
079678RING, SEALING2Seal Amazon eBay
083049REGULATOR VOLTAGE1Avr Amazon eBay $52.99 NAPA $46.92 FridayParts $114.30
087769FILTER, FUEL1Fuel filter Amazon eBay
087770Line, Fuel - 5/16" I.D.1Hose Amazon eBay
090475FUEL PUMP1Pump Amazon eBay $25.50
091481GASKET AND CAP ASSEMBLY1Gasket Amazon eBay $5.99
0A5508OIL FILL TUBE GASKET1Gasket Amazon eBay $20.00
0A8584Switch1Sensor Amazon eBay $19.57 FridayParts $31.60
0C2338AAIR CLEANER DECAL-PRIMEPACT 55LP1Air filter Amazon eBay
0C2338CAIR CLEANER DECAL-PRIMEPACT 66LP1Air filter Amazon eBay
0C2338EAIR CLEANER DECAL-PRIMEPACT 70LP1Air filter Amazon eBay
0C2881STARTER MOTOR (NOT SHOWN)1Starter eBay $53.19
0D1227CONTACTOR, STARTER1Starter eBay $17.00
303401/4" FUEL LINE (8" LONG)1Hose Amazon eBay
47662-T4-1/2" long Fuel Hose1Hose Amazon Amazon eBay eBay
55162PIPE SEALANT1Fluid eBay
60108GASKET, OIL FILTER SUPPORT1Sensor eBay
66386BRUSH HOLDER1Brush Amazon eBay $18.83 NAPA $117.30
66480Air Cleaner Gasket1Gasket Amazon eBay
67805OIL SEAL-30 DIAMETER1Seal Amazon eBay NAPA $5.25
67866O-ring1Seal Amazon eBay NAPA $12.26
67866AO-RING1Seal Amazon eBay
67871O-RING, CAP1Seal Amazon eBay $9.44
67895GASKET, INTAKE MANIFOLD2Gasket Amazon eBay
67897Exhaust Gasket2Gasket Amazon eBay
67911SEAL, VALVE STEM2Seal Amazon eBay
67920Valve Cover Gasket2Gasket Amazon eBay $17.67
67924OIL SEAL-35 DIAMETER1Seal Amazon eBay
68548Oil Pad Gasket1Gasket eBay
68554Governor Shaft Seal1Seal Amazon eBay NAPA $0.89
68554AGOVERNOR SHAFT SEAL1Seal Amazon eBay
68573O-RING, OIL PUMP1Seal Amazon eBay FridayParts $79.99
69332Cylinder Head Gasket2Gasket Amazon eBay
69336GASKET, OIL SUMP1Gasket Amazon eBay
69341Foam Pre-cleaner1Air filter Amazon eBay
69379Carburetor Mounting Gasket2Gasket Amazon eBay
70122Valve Stem Seal2Seal Amazon eBay
70169Sealing Washer4Seal Amazon eBay NAPA $16.63
70185FILTER, OIL1Oil filter Amazon eBay $18.99 NAPA $9.09 KuduParts $11.00
70189Sealing Washer4Seal Amazon eBay FridayParts $379.99
70506O-RING, OIL GALLEY1Seal Amazon eBay
70536Oil Screen1Oil filter Amazon eBay
70547OIL PUMP ASSEMBLY1Pump Amazon eBay
70596Breather Tube1Hose Amazon eBay NAPA $33.32
70597Air Inlet Tube1Hose Amazon eBay
72315GASKET, BREATHER1Gasket Amazon eBay
72347SPARK PLUG-CHAMPION R12YC1Spark plug Amazon eBay $9.99
72383Collector Pan Gasket2Gasket Amazon eBay
73123Air Filter1Air filter Amazon eBay $25.00
73132BOOT, SPARK PLUG1Spark plug Amazon eBay $52.79 FridayParts $19.99
749941/2" I.D. x 10" LONG HOSE1Hose Amazon eBay
7512-4O-ring DrainSeal Amazon eBay
75209GASKET, EXHAUST MANIFOLD1Gasket Amazon eBay
7521640" Poly Vinyl 4L Belt1Belt Amazon eBay NAPA $69.33
75229Slide Pan Gasket1Gasket Amazon eBay
75253Washer Valve Cover Seal4Seal Amazon eBay
75255Starter Motor1Starter Amazon eBay $71.99 NAPA $174.07
75257Brush Assembly4Brush Amazon eBay NAPA $35.90
75258Engine Gasket Kit1Gasket Amazon eBay $69.99
75260Starter Drive Assembly1Starter Amazon eBay
75262SEAL, BREATHER SCREW1Seal Amazon eBay
75263SEAL, BREATHER SCREW1Seal Amazon eBay
75281High Temperature Switch1Sensor Amazon eBay NAPA $313.37
75711O-ring Adaptor1Seal Amazon eBay
75712O-ring Drain1Seal Amazon eBay
77114Exhaust Outlet Gasket2Gasket Amazon eBay
77643GASKET, EXHAUST OUTLET1Gasket Amazon eBay $13.87
77667SWITCH OIL PRES 4PSI1Sensor Amazon eBay $9.99
78229SLIDE PAN, GASKET1Gasket Amazon eBay
78631GASKET, CARB./SKIRT1Gasket Amazon eBay $10.99
79678Exhaust Manifold Gasket2Gasket Amazon eBay
80011Brush Set Spring1Brush Amazon eBay NAPA $9.83
83049REGULATOR VOLTAGE1Avr eBay $52.99 NAPA $13.17 FridayParts $114.30
86729STARTER CONTACTOR 51 C2657 1 TRANSFORMER, 16V 6VA1Starter Amazon eBay $18.99 NAPA $0.85 KuduParts $41.00
87769FUEL FILTER1Fuel filter Amazon eBay $18.99 NAPA $6.96
877705/16" dia. Fuel Line1Hose Amazon eBay NAPA $13.62
87789Fuel Filter1Fuel filter Amazon eBay $74.95 NAPA $34.82
87895Intake Manifold Gasket2Gasket Amazon eBay
89965Cylinder Head Gasket2Gasket Amazon eBay
90475FUEL PUMP1Pump Amazon eBay $25.93 NAPA $15.89
91481Gasket and Cap Assembly1Gasket Amazon eBay
99948STARTER MOTOR1Starter Amazon eBay $120.00
A5508OIL FILL TUBE GASKET1Gasket Amazon eBay
A8584OIL PRESSURE SWITCH1Sensor Amazon eBay
C2881STARTER MOTOR (NOT SHOWN)1Starter eBay $53.19
022097WASHER LOCK M6-1/41Service part / kit Amazon eBay $2.99
022676FUSE AGC-15A.1Service part / kit Amazon eBay $3.99
026307STREET ELBOWS3Service part / kit Amazon eBay
026915NIPPLE CLOSE 3/4 X 1.3752Service part / kit Amazon eBay
0287394" LONG TIE WRAP4Service part / kit Amazon eBay
037398HEX LOCK NUT (NYLON)1Service part / kit Amazon eBay
038750M6-1.0 X 30MM HEX HD. CAPSCR.2Service part / kit Amazon eBay
047227GOVERNOR ADJUSTER SCREW1Service part / kit Amazon eBay
047411SCREW HHC M6-1.0 X 16 G8.84Service part / kit Amazon eBay
049451BELT (POLY V 4L)-40"1Service part / kit Amazon eBay
049813NUT HEX M6 X 1.0 G8 YEL CHR1Service part / kit Amazon eBay $3.99
055162PIPE SEALANT9CCService part / kit Amazon eBay
056893CRIMPTITE 10-24 x 1/2"32Service part / kit Amazon eBay
061696BARBED 90 DEG. 3/8 X 1/21Service part / kit Amazon eBay
065795BATTERY CHARGER RECTIFIER1Service part / kit Amazon eBay $33.96
066476M6-1.0 X 12MM HEX SCREW W/LOCK WASHER2Service part / kit Amazon eBay $1.49
067813VALVE GUIDE4Service part / kit eBay
067891IGNITION COIL1Service part / kit eBay $39.99
067910INTAKE VALVE SEAT2Service part / kit eBay
069316EXHAUST VALVE2Service part / kit eBay
069317INTAKE VALVE2Service part / kit eBay
069327PISTON LOCKING RING4Service part / kit eBay
069333SLEEVE BEARING1Service part / kit eBay
070108GOVERNOR-TO-CARBURETOR ROD1Service part / kit Amazon eBay
070125ANTI-LASH SPRING1Service part / kit Amazon eBay
070155GOVERNOR LEVER1Service part / kit Amazon eBay
070535OIL SCREEN1Service part / kit eBay
072366COTTER PIN (governor)1Service part / kit eBay
073112BCarburetor Assembly1Service part / kit eBay $27.99
074961GOVERNOR ADJUSTER BRACKET1Service part / kit Amazon eBay
074962CGOVERNOR SPRING (PP55G/LP, PP66G/LP)1Service part / kit Amazon eBay
074962GGOVERNOR SPRING (PP70G/LP, Q70G)1Service part / kit Amazon eBay
075211REGULATOR1Service part / kit Amazon eBay
075248STANDARD PISTON ASSEMBLY2Service part / kit eBay
075249STANDARD PISTON RING SET2Service part / kit Amazon eBay
075252Kit, Carburetor Overhaul1Service part / kit Amazon eBay
075271VALVE OVERHAUL KIT1Service part / kit Amazon eBay
075944GOVERNOR SPRING BRACKET1Service part / kit Amazon eBay
0762421/8 I.D. X 1/8 RIVET2Service part / kit Amazon eBay
089473ASSEMBLY, BI-METAL & HEATER (940)1Service part / kit eBay $132.99
089870Solenoid, Fuel Shutoff (Q-70G Only)1Service part / kit eBay
091306SOLENOID, CHOKE1Service part / kit eBay
0A1662ACARB. V-TWIN L/P1Service part / kit Amazon eBay
0A2666GASEOUS FUEL SOLENOID1Service part / kit Amazon eBay $119.99
0A5198REGULATOR MOUNTING BRACKET1Service part / kit Amazon eBay
0A5606ELBOW 90 DEG 3/8 X 3/41Service part / kit Amazon eBay
0A7782AFLYWHEEL ASSEMBLY1Service part / kit Amazon eBay
2267615 Amp Fuse1Service part / kit Amazon eBay NAPA $40.67
22876FUSE AGC-15A.1Service part / kit eBay
31971BALL BEARING1Service part / kit Amazon eBay NAPA $18.82
38077CIRCUIT BREAKER 15A.1Service part / kit eBay
536232.5A Circuit Breaker1Service part / kit eBay $44.99 NAPA $464.60
545023A Circuit Breaker1Service part / kit Amazon eBay
56739Starter Contactor1Service part / kit Amazon eBay NAPA $71.29
65795Battery Charge Rectifier1Service part / kit Amazon eBay $33.96 NAPA $54.42
66443BVibration MountService part / kit Amazon eBay $6.75
678883/8" NPT Oil Drain Plug2Service part / kit eBay
67891Ignition Armature Assembly1Service part / kit Amazon eBay $39.99 NAPA $204.28
67910Intake Valve Seat2Service part / kit Amazon eBay
69316Exhaust Valve2Service part / kit eBay
69317Intake Valve2Service part / kit eBay
69333Sleeve Bearing1Service part / kit eBay
70199Breather Baffle1Service part / kit eBay
70530Camshaft Assembly1Service part / kit eBay $199.99
70535Oil Screen1Service part / kit Amazon eBay NAPA $3.75
70584Valve Tappet4Service part / kit eBay
72301Breather Assembly1Service part / kit eBay
72361Governor Shaft Bushing1Service part / kit Amazon eBay NAPA $250.66
72362Governor Shaft Bushing1Service part / kit eBay
72379B6/8KW UPPER BEARING SCREW (10KW)-Service part / kit Amazon eBay
73106BPulley, Alternater73106FService part / kit Amazon eBay $60.00
73112BCarburetor Assembly1Service part / kit eBay
73130FlywheelService part / kit Amazon eBay
73159BALL BEARING1Service part / kit Amazon eBay
75211REGULATOR, GAS FUEL1Service part / kit Amazon eBay NAPA $9.32 FridayParts $15.89
75234RESISTER, 1 OHM 25W 42 A9947B 1 45A CIRCUIT BREAKER (10KW)1Service part / kit Amazon eBay
75244Remote Cable Assembly-Service part / kit Amazon eBay
75249Standard Piston Ring Set2Service part / kit eBay
75252Carburetor Overhaul Kit1Service part / kit Amazon eBay
75261Clutch Assembly1Service part / kit Amazon eBay NAPA $40.77
75269Armature Assembly1Service part / kit eBay NAPA $30.98
75271Valve Overhaul Kit1Service part / kit Amazon eBay NAPA $37.51
759956/8BKW LOWER BEARING 10 75242 4 ALTERNATOR MOUNTING1Service part / kit Amazon eBay
76271VALVE OVERHAUL KIT1Service part / kit Amazon eBay
77004-GRotor Assembly1Service part / kit eBay
77005HRotor77004HService part / kit Amazon eBay
80095HROTOR ASSEMBLY1Service part / kit eBay
81190LP HOOK-UP FITTING1Service part / kit eBay
82081C/BREAKER 30A.1Service part / kit eBay
86731AASSEMBLY, MUFFLER1Service part / kit Amazon eBay
87798Start/Stop Switch1Service part / kit eBay NAPA $147.31
87844HStator87845HService part / kit Amazon eBay
87845-GStator Assembly1Service part / kit eBay
89473Bimetal Choke Assembly1Service part / kit eBay NAPA $4.34
89680SPARK ARRESTOR1Service part / kit Amazon eBay $14.99 NAPA $134.51
89870Fuel Solenoid Shutoff (Q70)1Service part / kit Amazon eBay $89.95 NAPA $31.82
90144C/BREAKER 20A.1Service part / kit eBay NAPA $138.11
9014530A Circuit Breaker (all units); 30A Circuit Breaker Q-70G1Service part / kit eBay
91306Choke Solenoid1Service part / kit eBay NAPA $119.65
91480Rocker Arm and Cover1Service part / kit eBay $29.99
92113dk a_i Dh ok1Service part / kit Amazon eBay NAPA $60.18
92234RV CONTROL BOARD1Service part / kit Amazon eBay NAPA $85.94
92848HSTATOR ASSEMBLY1Service part / kit eBay
97939Battery Charge Rectifier1Service part / kit eBay
A1662ACarburetor-Service part / kit Amazon eBay
A2666SOLENOID, GAS FUEL1Service part / kit Amazon eBay NAPA $23.82
A4008LP RegulatorA4605Service part / kit Amazon eBay
A5892Magnetic Housing Ass'y-Service part / kit Amazon eBay
A9178Ignition Assembly-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.

Available documents

Owner's manual — A4021 (Generac)Owner's manual — A4021 (Generac)

This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Air filter 73123$25.00
Fuel filter 87769$6.96
Oil filter 70185$9.09
Belt 75216$69.33
Spark plug 072347$1.99
5 priced items$112.37