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Generac G-Force 800 Series Engine

Name: Generac G-Force 800 Series Engine
Brand: Generac

The Generac G-Force 800 Series is a 0.82 L 2-cylinder naturally aspirated engine rated at 3600 rpm. It powers generator sets from Generac, including the G007173-0, G007174-0, G007175-0 and G007176-0. It holds 2.1 L (0.6 gal) of oil.

Also known as: Generac G-Force 800 Series

0.816 L

Displacement

Cylinders

3600 rpm

Rated speed

2.1 L

Oil capacity

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Fault codes Procedures Wiring

Engine specifications

Oil capacity	2.1 L
Displacement	0.816 L
Cylinders	2
Aspiration	Naturally aspirated
Rated speed	3600 rpm

Generator sets powered by this engine

Generac G007173-0 Generac G007174-0 Generac G007175-0 Generac G007176-0 Generac G007177-0 Generac G007178-0 Generac G0072100 Generac G007223-0 Generac G007224-0 Generac G007225-0 Generac G007226-0 Generac G007228-0 Generac G007258-0 Generac G007259-0 Generac G007323-0 Generac G007324-0

How to read your Generac engine serial & model number →

Common problems

Wi-Fi network connection broken or intermittent
Cause: Various.
Fix: See Wi-Fi module owner’s manual.
Unit is set to OFF, but engine continues to run
Cause: Controller wired incorrectly.
Fix: Contact an IASD for assistance.
Unit consumes large amounts of oil
Cause: Excessive engine oil.
Fix: Adjust oil to correct level. See Checking Engine Oil Level.
No transfer to standby after utility source failure
Cause: Generator MLCB (generator disconnect) is OFF (OPEN).
Fix: Set generator MLCB (generator disconnect) to ON (CLOSED).
No AC output from generator
Cause: Generator MLCB (generator disconnect) is OFF (OPEN).
Fix: Set generator MLCB (generator disconnect) to ON (CLOSED).
Engine will not crank
Cause: Blown fuse.
Fix: Correct short circuit condition by replacing 7.5 A fuse in generator control panel. Contact an IASD if fuse continues to blow.
Engine starts hard and runs rough
Cause: Plugged or damaged air cleaner.
Fix: Inspect and clean air cleaner.
Engine cranks but will not start
Cause: No fuel.
Fix: Replenish fuel / turn on fuel valve.
NOT ACTIVATED!
Fix: Press ESC and then ENTER to reset Install Wizard.
Engine damage.
Fix: Verify proper type and quantity of engine oil prior to starting engine. Failure to do so could result in engine damage.
Wiring Error ALARM 2099
Voltage and Frequency Drop Excessively When Loads Are Applied
Fix: TEST 14 - CHECK VOLTAGE AND FREQUENCY UNDER LOAD, BOTH LOW -> TEST 15 - CHECK FOR OVERLOAD CONDITION, NOT OVERLOADED -> GOOD -> IF RECONFIGURED TO LP GAS, VERIFY THAT PROPER PROCEDURE WAS FOLLOWED (REFER TO INSTALLATION MANUAL), GOOD -> OVERLOADED -> DISCONTINUE TESTING, REDUCE LOADS TO UNIT’S RATED CAPACITY, TEST 12 - CHECK STEPPER MOTOR CONTROL, GOOD -> BAD -> REPAIR OR REPLACE, LOOK FOR A SHORTED CONDITION IN A CONNECTED LOAD OR IN ONE OF THE LOAD CIRCUITS, GOOD -> TEST 7 - CHECK STATOR AC POWER WINDINGS, ENGINE CONDITION GOOD -> REPAIR OR REPLACE, BAD -> TEST 16 - CHECK ENGINE CONDITION, GOOD -> GO TO “PROBLEM 18 - ENGINE STARTS HARD AND RUNS ROUGH/LACKS POWER” SECTION 4.3
Utility failure 0
Fix: Crank and start engine, transfer load to Generator if Utility returns above 75% nominal for 15 seconds
Unstable Voltage or Incorrect Output Which is Not Triggering a Shutdown
Fix: TEST 1 - CHECK AC OUTPUT VOLTAGE, ERRATIC -> PROCEED TO PROBLEM 3
Undervoltage 1902

Compiled from service & troubleshooting documentation across every generator set that uses the Generac G-Force 800 Series.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Oil		2.4 L	—	200 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
Oil level	Check	24 hr		Monthly or 24 hours of continuous operation
Aceite del motor	Change	25 hr		First service — Después del período de asentamiento de 25 horas, se recomienda utilizar el aceite 5W-20 propiedad de Generac para uso continuo.
Huile moteur et filtre à huile	Change	25 hr		First service — Après les premières 25 heures de marche
Jeu des soupapes	Adjust	25 hr		First service — Après les premières 25 heures de marche; puis toutes les 400 heures
Engine oil and filter	Replace	100 hr	12 mo	First service — After first 25 hours; then every 100 hours or 1 year. Cold weather (<4.4°C) or continuous hot (>29.4°C): every 100 hours or 1 year
Air cleaner	Inspect	200 hr	24 mo	2Y or 200 hours
Air cleaner	Replace	200 hr	24 mo	2Y or 200 hours
Battery condition and charge	Check	200 hr	24 mo	Schedule A maintenance
Complete tune-up	Other	200 hr	24 mo	2Y or 200 hours; to be completed by a dealer
Oil	Change	200 hr	24 mo	2Y or 200 hours; change after first 8 hours
Oil filter	Change	200 hr	24 mo	2Y or 200 hours; change after first 8 hours
Óleo lubrificante e filtro de óleo	Change	200 hr	24 mo	First service — Trocar após as primeiras 25 horas; Programação A (2 anos ou 200 h); em clima frio (<4,4 °C) ou quente contínuo (>29,4 °C) anualmente ou 100 h
Aceite del motor y filtro de aceite	Replace	400 hr	48 mo	First service — Programa B: cada cuatro años o 400 horas.
Air filter	Replace	400 hr	48 mo	Schedule B maintenance
Bujía(s)	Replace	400 hr	48 mo	Programa B: cada cuatro años o 400 horas.
Engine air filter	Replace	400 hr	48 mo	Schedule B. Emissions-critical.
Engine oil and oil filter	Change	400 hr	48 mo	First service — Schedule B (every four years or 400 hours).
Filtro de aire del motor	Replace	400 hr	48 mo	Programa B: cada cuatro años o 400 horas.
Filtro de ar do motor	Replace	400 hr	48 mo	Programação B (4 anos ou 400 h)
Folga da válvula	Adjust	400 hr	48 mo	First service — Inspecionar/ajustar após as primeiras 25 h e depois a cada 400 h; Programação B; exclui 14/18 kW com motor 816 cc
Sediment trap	Clean	400 hr	48 mo	Schedule B maintenance
Separación de la válvula	Adjust	400 hr	48 mo	First service — Programa B. Inspeccione y ajuste después de las primeras 25 horas y luego cada 400 horas. No necesario en unidades 14/18 kW con motor 816 cc.
Spark plug(s)	Inspect	400 hr	48 mo	Schedule B maintenance; clean, inspect gap, replace if necessary
Spark plug(s)	Replace	400 hr	48 mo	Schedule B. Emissions-critical.
Valve clearance	Adjust	400 hr	48 mo	First service — Schedule B; inspect/adjust valve clearance after first 25 hours of operation, then at 400 hour intervals. Where applicable; excludes units with hydraulic lifters (14 or 18 kW with 816cc engine).
Vela(s) de ignição	Replace	400 hr	48 mo	Programação B (4 anos ou 400 h)
Bateria	Check		12 mo	Estado da bateria; todos os anos
Battery charge state	Check		6 mo	Every 6 months
Battery electrolyte level	Check		6 mo	Every 6 months
Condición de la batería	Inspect		12 mo	Anualmente (revisión de batería y carga).
Fuel system	Test		12 mo	Every year: perform fuel system leak test.
Fuel system leak test	Test		12 mo
Prueba de fugas del sistema de combustible	Test		12 mo	Anualmente.
Sistema de combustível	Test		12 mo	Teste de vazamento; todos os anos
Valve clearance	Check		6 mo	First service — After first 6 months of operation
Water intrusion	Inspect		12 mo

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

Type	Item	Value	Unit	Condition
Gap	Folga da vela de ignição	0,020	pol
Gap	Folga da vela de ignição	0,040	pol
Gap	Folga da vela de ignição	0,508	mm
Gap	Folga da vela de ignição	1,02	mm
Gap	Ignition magneto air gap	0.008-0.012 inch (0.20-0.30 mm)	gap	V-twin engines; fixed non-adjustable on single cylinder
Gap	Ignition magneto air gap (V-twin)	0.008-0.012 (0.20-0.30mm)	inch
Gap	Magneto gap between flywheel (during replacement)	0.010	inch
Gap	Separación de las bujías	0.508	mm (0.020 pulg.)
Gap	Separación de las bujías	1.02	mm (0.040 pulg.)
Gap	Spark plug gap	0.020	in
Gap	Spark plug gap	0.030	inch	8, 10 & 20kW
Gap	Spark plug gap	0.040	inch	12, 14, 16 & 17kW
Gap	Spark plug gap	0.508	mm
Gap	Spark plug gap	0.76	mm	8, 10 & 20kW
Gap	Spark plug gap	0.76 mm (0.030 inch)	gap	410 cc and 530 cc engines
Gap	Spark plug gap	1.02	mm	12, 14, 16 & 17kW
Gap	Spark plug gap	1.02 mm (0.040 inch)	gap	990 cc and 999 cc engines
Gap	Spark plug gap (10 kW)	0.020	in (0.508 mm)
Gap	Spark plug gap (14-24 kW)	0.040	in (1.02 mm)
Gap	Spark plug gap (410cc 6/7 kW)	0.030	inch
Gap	Spark plug gap (530cc 9/10 kW)	0.030	inch
Gap	Spark plug gap (990cc 13/16/18 kW)	0.040	inch
Gap	Écartement de bougie	0,508	mm (0,020 po)
Gap	Écartement de bougie	1,02	mm (0,040 po)
Other	Battery charge output	0.050 to 2.5	amps
Other	Compression Ratio GH-410	8.6:1
Other	Compression Ratio GT-530	9.5:1
Other	Compression Ratio GT-990	9.5:1
Other	Compression Ratio GT-999	9.5:1
Other	Fusível do painel de controle	7,5	A
Other	Ordem de partida (10 kW)	15 s de arranque, 7 s de repouso, seguidos por quatro ciclos adicionais de 7 s de arranque e 7 s de repouso		cinco ciclos de manivela
Other	Ordem de partida (14 a 24 kW)	16 s de arranque, 7 s de repouso, 16 s de arranque, 7 s de repouso, seguidos por três ciclos adicionais de 7 s de arranque e 7 s de repouso		cinco ciclos de manivela
Other	Perda de potência do motor por altitude	3,5	% a cada 304,8 m (1.000 pés) acima do nível do mar
Other	Perda de potência do motor por temperatura	1	% a cada 6 °C (10 °F) acima de 15 °C (60 °F)
Other	Rated Horsepower @ 3,600 rpm GH-410	14.8	HP
Other	Rated Horsepower @ 3,600 rpm GT-530	18	HP
Other	Rated Horsepower @ 3,600 rpm GT-990	32	HP
Other	Rated Horsepower @ 3,600 rpm GT-999	36	HP
Other	Redução de classificação GN vs PL	10 a 20	%
Other	Starter motor performance, V-twin	Minimum rpm 3250; Maximum Amps 62
Other	Starter motor performance, single cylinder	Minimum rpm 4500; Maximum Amps 9
Other	Tamanho mínimo de tanque de PL ao converter de GN	946	L (250 gal)
Pressure	Compression difference between cylinders maximum	25	percent
Pressure	Compression minimum (single cylinder)	60	psi	cold
Pressure	Cylinder leak down acceptable leakage	20	percent
Pressure	Cylinder leak down regulated pressure	80	psi
Pressure	Cylinder leak down tester regulated pressure	80	psi	air source at least 90 psi
Pressure	Fuel pressure (Liquid Propane)	10-12	in water column (2.49-2.99 kPa)	at generator fuel inlet
Pressure	Fuel pressure (Natural Gas)	3.5-7.0	in water column (0.87-1.74 kPa)	at generator fuel inlet
Pressure	Fuel pressure LP	10 to 12	inches water column	required
Pressure	Fuel pressure LP maximum	14	inches water column
Pressure	Fuel pressure LP minimum	11	inches water column
Pressure	Fuel pressure LP never below	10	inches water column
Pressure	Fuel pressure natural gas	5 to 7	inches water column	required
Pressure	Fuel pressure natural gas maximum	7	inches water column
Pressure	Fuel pressure natural gas minimum	5	inches water column
Pressure	Fuel pressure natural gas never below	4	inches water column
Pressure	Fuel pressure to regulator (LP)	10-12	in water column (2.49-2.99 kPa)
Pressure	Fuel pressure to regulator (NG)	3.5-7.0	in water column (0.87-1.74 kPa)
Pressure	Fuel pressure, LP vapor	10-12	inches water column	at fuel inlet

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		API SJ, SL ou mieux			Changer l'huile chaque année ou toutes les 100 heures par temps froid (< 4,4 °C) ou exploitation continue par temps chaud (> 29,4 °C)
Engine oil	10W-30	API Service Class SJ, SL or better			Between 40° F and -10° F
Engine oil	5W-20				Aceite 5W-20 propiedad de Generac para uso continuo, después del período de asentamiento de 25 horas.
Engine oil	5W-20 (Generac proprietary)	API Service Class SJ, SL, or better		1.03 L	Oil capacity including filter. Use for continuous use after the 25 hour break-in period; specifically formulated for gaseous powered Generac generators. Do not use special additives. Change every year or 100 hours in cold weather (below 40 F) or continuous hot weather (above 85 F).
Engine oil	5W-30				Aceite orgánico 5W-30 prellenado de fábrica.
Engine oil	Generac 5W-20 exclusive	API SJ, SL ou mieux			Après la période de rodage de 25 heures et à chaque intervalle; spécialement formulée pour les génératrices Generac alimentées au gaz
Engine oil	SAE 30 above 32°F; 10W-30 between 40°F and -10°F; Synthetic 5W-30 10°F and below	API Service Class SJ, SL or better; use no special additives		1.5 Qts	Oil capacity including filter
Engine oil	SAE 5W-20/5W-30	API Service class SG, SH, or SJ	below -7°C		Below 20° F (-7° C)
Engine oil	SAE 5W-30 Synthetic	API Service class SG, SH, or SJ			For all seasons
Engine oil	Synthetic 5W-30	API Service Class SJ, SL or better			10° F and below
Engine oil	SAE 10W-30	API Service class SG, SH, or SJ	-7°C to 15°C		20° to 59° F (-7° to 15° C)
Engine oil	SAE 30	API Service class SG, SH, or SJ	above 16°C		Above 60° F (16° C)
Fuel		Gás natural: mínimo 37,26 MJ/m³ (1.000 BTU/pé³); PL: mínimo 93,15 MJ/m³ (2.500 BTU/pé³)			Sistema de combustível de dupla carburação; configurado de fábrica para GN
Fuel	Gas natural	Contenido de BTU de al menos 37.26 MJ/m3 (1,000 BTU/pie3); presión de suministro 0.87 a 1.74 kPa (3.5 a 7.0 pulg. de columna de agua) en la entrada de combustible			Tamaño mínimo de tanque/medidor debe cubrir el generador a carga completa más todas las cargas de los artefactos.
Fuel	LP gas	At least 2,520 Btus per cubic foot
Fuel	Liquid Propane (LP) Vapor	Btu content at least 2,520 Btus per cubic foot; pressure 10-12 inches water column (0.36-0.43 psi)			Use vapor withdrawal system only
Fuel	Liquid Propane (vapor)			2500.0 BTU/ft3 (93.15 MJ/m3) minimum	Vapor withdrawn; minimum tank size 250 gal (946 L) when converting from NG
Fuel	Liquid propane (LP) vapor	BTU content at least 2,500 BTUs per ft3 (93.15 megajoules per m3)			If converting to LP gas from NG, a minimum LP tank size of 250 gal (946 L) is recommended.
Fuel	Natural Gas	Btu content at least 1,000 Btus per cubic foot; pressure 5-7 inches water column (0.18-0.25 psi)
Fuel	Natural gas	At least 1,000 Btus per cubic foot
Fuel	Natural gas (NG)	BTU content at least 1,000 BTUs per ft3 (37.26 megajoules per m3)			Unit factory-configured to run on NG.
Fuel	Natural gas or LP gas (vapor withdrawal only for LP)	Natural gas Btu content at least 1,000 Btus per cubic foot; LP gas at least 2,520 Btus per cubic foot			Required fuel pressure: NG 5 to 7 inches water column; LP 10 to 12 inches water column. NFPA 54 for natural gas, NFPA 58 for liquid propane.
Fuel	Propano líquido (vapor)	Contenido de BTU de al menos 93.15 MJ/m3 (2,500 BTU/pie3); presión de suministro 2.49 a 2.99 kPa (10 a 12 pulg. de columna de agua) en la entrada de combustible		946.0 L (tamaño mínimo de tanque recomendado, 250 gal)	Solo sistema de recuperación de vapor. No conectar a un tanque de propano líquido de 20 o 30 lb (9 o 14 kg).
Other		Água destilada (baterias não lacradas)			Encha apenas com água destilada; NÃO use água comum de torneira
Other	Solución de bicarbonato de sodio			454.0	Agente neutralizante de ácidos para derrames de electrolito de batería.

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

Fault codes

Code	Name	Meaning	Severity	Action
ADVERTENCIA DEL CARGADOR	ADVERTENCIA DEL CARGADOR	Indicador LED amarillo encendido en cualquier estado.	Warning	Comuníquese con un IASD.
AUXILIARY SHUTDOWN	Desligamento auxiliar	L’appareil ne démarre pas	Shutdown	Mettre le ou les interrupteurs d’arrêt auxiliaires en position FERMÉE (I); effacer l’alarme.
BAJA PRESIÓN DEL ACEITE	BAJA PRESIÓN DEL ACEITE	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Revise el nivel de aceite y reponga si es necesario. Si el nivel de aceite es correcto, comuníquese con un IASD.
BAJA VELOCIDAD	BAJA VELOCIDAD	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
BATERÍA BAJA	BATERÍA BAJA	Indicador LED amarillo encendido en cualquier estado.	Warning	Borre la alarma. Navegue hasta BATTERY MENU del MAIN MENU para revisar la batería. Si indica GOOD, comuníquese con un IASD. Si indica CHECK BATTERY, reemplace la batería.
BATTERY PROBLEM	Problème de batterie	Voyant JAUNE allumé dans tous les états	Warning	S’adresser à un IASD.
Battery Problem	Battery Fault	Battery condition poor or battery charger issue	Warning	Inspect battery condition and connections. Contact IASD if needed.
CARGADOR SIN CA	CARGADOR SIN CA	Indicador LED amarillo encendido en cualquier estado.	Warning	Comuníquese con un IASD.
CHARGER MISSING AC	Chargeur sans c.a.	Voyant JAUNE allumé dans tous les états	Warning	S’adresser à un IASD.
CHARGER WARNING	Aviso de carregador	Voyant JAUNE allumé dans tous les états	Warning	S’adresser à un IASD.
CONTROLLER FAULT	Anomalia no controlador	Falha do controlador.	Shutdown	Entre em contato com uma IASD.
Controller Fault	Control Module Failure	Internal controller fault detected	Shutdown	S’adresser à un IASD.
DESCONEXIÓN AUXILIAR	DESCONEXIÓN AUXILIAR	La unidad no arranca.	Shutdown	Coloque los interruptores de desconexión auxiliar en posición CERRADA (I).
DOWNLOAD FAILURE	Falha na importação	Falha de download.	Warning	Verifique o ficheiro e tente novamente.
Download Failure	Échec du téléchargement	Avertissement affiché par le contrôleur	Warning	S’adresser à un IASD.
EMERGENCY STOP	Paragem de emergência	Paragem de emergência ativada.	Shutdown	Entre em contato com uma IASD.
ERROR DE CABLEADO	ERROR DE CABLEADO	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
EXERCISE SET ERROR	Erro de definição de exercício	Erro de definição do funcionamento de teste.	Warning	Entre em contato com uma IASD.
Emergency Stop	Arrêt d’urgence	Alarme affichée par le contrôleur	Shutdown	S’adresser à un IASD.
FALLA DE ARRANQUE	FALLA DE ARRANQUE	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Verifique que la válvula de cierre de la tubería de combustible esté en la posición ON. Borre la alarma. Arranque la unidad en MANUAL. Si no arranca o funciona de forma dificultosa, comuníquese con un IASD.
FIRMWARE ERROR-7	Erro de firmware 7	Erro de firmware.	Shutdown	S’adresser à un IASD.
FIRMWARE ERROR-9	Erro de firmware 9	Erro de firmware.	Warning	S’adresser à un IASD.
Fuel Pressure	Pression de carburant	Avertissement affiché par le contrôleur	Warning	S’adresser à un IASD.
Fuse Problem	Problème de fusible	Alarme affichée par le contrôleur	Shutdown	Vérifier/changer le fusible de 7,5 A; s’adresser à un IASD si le fusible continue de griller.
HIGH TEMPERATURE	Température élevée	Unit shuts down during operation	Shutdown	Inspecione a ventilação ao redor do gerador, admissão, exaustão e parte traseira. Se não existirem obstruções, entre em contato com uma IASD.
High Temperature	Overheat	Engine operating temperature too high	Shutdown	Inspect ventilation around generator, intake, exhaust, and rear. Ensure no obstructions present.
INSPECCIONE LA BATERÍA	INSPECCIONE LA BATERÍA	Indicador LED amarillo encendido en cualquier estado.	Warning	Inspeccione la batería. Presione ENTER para borrar.
INSPECT BATTERY	Inspecter la batterie	Voyant JAUNE allumé dans tous les états	Warning	Inspecter la batterie; appuyer sur ENTER pour effacer.
LOW BATTERY	Low Battery Alarm	Yellow LED illuminated in any state	Warning	Effacer l’alarme; vérifier la batterie au MENU BATTERIE; si BON, s’adresser à un IASD; si VÉRIFICATION NÉCESSAIRE, changer la batterie.
LOW OIL PRESSURE	Pressão de óleo baixa	Unit will not start in AUTO with utility loss	Shutdown	Vérifier le niveau d’huile et le compléter; si correct, s’adresser à un IASD.
LOW VOLTS REMOVE LOAD	Tensão baixa, remova a carga	Unit will not start in AUTO with utility loss	Warning	Effacer l’alarme et séparer les circuits de charge, mettre en mode AUTO et redémarrer.
Loss of Serial Link	Perte de liaison série	Alarme affichée par le contrôleur	Shutdown	S’adresser à un IASD.
Loss of Speed Signal	Perte de signal de vitesse	Alarme affichée par le contrôleur	Shutdown	S’adresser à un IASD.
Low Battery	Battery Voltage Low	Starting battery voltage below acceptable level	Warning	Inspect battery and battery cables. Charge or replace battery if necessary.
Low Oil Pressure	Low Oil Level or Pressure	Insufficient oil pressure in engine	Shutdown	Check engine oil level and top up if necessary. Contact IASD if problem persists.
NINGUNA	NINGUNA (LED verde parpadeando)	La unidad funciona en AUTO, pero no energiza la casa.	Info	Revise el MLCB del generador (desconexión del generador). Si está encendido, comuníquese con un IASD.
NO ACTIVADA	NO ACTIVADA	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Info	Verifique si la pantalla indica que la unidad no está activada. Consulte Activación.
NOT ACTIVATED	Não ativado	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Info	Voir la section Activation dans le manuel d’installation.
OVERCRANK	Overcrank Alarm	Unit will not start in AUTO with utility loss	Shutdown	Vérifier que le robinet d’arrêt de carburant est ouvert; effacer l’alarme; démarrer en mode MANUEL; sinon s’adresser à un IASD.
OVERLOAD REMOVE LOAD	Surcharge, retrait de charge nécessaire	Unit shuts down during operation	Shutdown	Effacer l’alarme et séparer les circuits de charge de la génératrice, mettre en mode AUTO et redémarrer.
OVERLOAD WARNING	Aviso de sobrecarga	Aviso de sobrecarga.	Warning	Remova as cargas domésticas do gerador.
OVERSPEED	Survitesse	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
OVERVOLTAGE	Tensão excessiva	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
Overcrank	Extended Cranking	Engine failing to start after extended crank attempts	Shutdown	Check fuel supply, spark plugs, and fuel system. Contact IASD for further diagnosis.
Overload	Overload Detected	Electrical load exceeds generator capacity	Shutdown	Remove household electrical loads from generator
Overspeed	RPM Overspeed	Engine running at excessive RPM	Shutdown	Contact IASD for assistance
Overvoltage	Output Voltage High	Generator voltage exceeding nominal rating	Shutdown	Reduce electrical load and restart. Contact IASD if issue persists.
PROBLEMA DE BATERÍA	PROBLEMA DE BATERÍA	Indicador LED amarillo encendido en cualquier estado.	Warning	Comuníquese con un IASD.
PÉRDIDA DE DETECCIÓN DE RPM	PÉRDIDA DE DETECCIÓN DE RPM	La unidad funcionaba, se apagó e intenta reiniciarse, o no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Borre la alarma y retire del generador las cargas del hogar. Vuelva a poner en AUTO y reinicie. Si el generador no arranca, comuníquese con un IASD.
RPM SENSE LOSS	RPM Sense Loss Alarm	Unit was running and shuts down, attempts to restart	Shutdown	Effacer l’alarme et séparer les circuits de charge, mettre en mode AUTO et redémarrer; s’adresser à un IASD si la génératrice ne démarre pas.
RPM Sensor Loss	RPM Signal Loss	RPM sensor signal not detected	Shutdown	Contact IASD for assistance
SEEPROM ABUSE	Abus de SEEPROM	Avertissement affiché par le contrôleur	Warning	S’adresser à un IASD.
SERVICE A	Service A Maintenance Alert	Yellow LED illuminated - maintenance due	Warning	Realize a manutenção SERVICE A. Pressione ENTER para apagar.
SERVICE B	Service B Maintenance Alert	Yellow LED illuminated - maintenance due	Warning	Realize a manutenção SERVICE B. Pressione ENTER para apagar.
SERVICIO A	SERVICIO A	Indicador LED amarillo encendido en cualquier estado.	Warning	Realice el mantenimiento SERVICIO A. Presione ENTER para borrar.
SERVICIO B	SERVICIO B	Indicador LED amarillo encendido en cualquier estado.	Warning	Realice el mantenimiento SERVICIO B. Presione ENTER para borrar.
SOBRECARGA. RETIRE LA CARGA	SOBRECARGA	La unidad se apaga durante el funcionamiento.	Shutdown	Borre la alarma y retire del generador las cargas del hogar. Vuelva a poner en AUTO y reinicie.
SOBRECORRIENTE DEL MOTOR DE VELOCIDAD GRADUAL	SOBRECORRIENTE DEL MOTOR DE VELOCIDAD GRADUAL	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
SOBREVELOCIDAD	SOBREVELOCIDAD	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
SOBREVOLTAJE	SOBREVOLTAJE	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
STEPPER OVERCURRENT	Surintensité du moteur pas-à-pas	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
SUBVOLTAJE	SUBVOLTAJE	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Comuníquese con un IASD.
TEMPERATURA ALTA	TEMPERATURA ALTA	La unidad se apaga durante el funcionamiento.	Shutdown	Inspeccione la ventilación alrededor del generador, además de las secciones de entrada, escape y trasera. Si no hay obstrucciones, comuníquese con un IASD.
UNDERSPEED	Sous-vitesse	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
UNDERVOLTAGE	Subtensão	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
USB WARNING	Aviso de USB	Aviso relacionado ao dispositivo USB.	Warning	Tente novamente com USB de melhor qualidade. Os nomes dos ficheiros no USB não podem ter mais de 8 caracteres.
USB Warning	Avertissement USB	Avertissement affiché par le contrôleur	Warning	S’adresser à un IASD.
Underspeed	Engine Speed Too Low	Engine RPM below nominal specification	Shutdown	Contact IASD for assistance
Undervoltage	Output Voltage Low	Generator voltage below nominal rating	Shutdown	Reduce electrical load and restart. Contact IASD if issue persists.
VOLTIOS BAJOS. RETIRE LA CARGA	VOLTIOS BAJOS	La unidad no arranca en AUTO con una pérdida de energía eléctrica.	Shutdown	Borre la alarma y retire del generador las cargas del hogar. Ponga en AUTO y reinicie.
WIRING ERROR	Erro de fiação	Ne démarre pas en mode AUTO en cas de panne de réseau électrique	Shutdown	S’adresser à un IASD.
Wiring Error	Electrical Wiring Fault	Wiring configuration error detected	Shutdown	Contact IASD for assistance

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

Procedures

Adjusting Magneto Flywheel Gap adjustment

⚠ Air gap between ignition magneto and flywheel on single cylinder engines is not adjustable.

Tools: 0.008-0.012 inch thickness gauge

Rotate the flywheel until the magnet is under the module (armature) laminations.
Place a 0.008-0.012 inch (0.20-0.30mm) thickness gauge between flywheel magnet and module laminations.
Loosen the mounting screws and let the magnet pull the magneto down against the thickness gauge.
Tighten both mounting screws.
To remove the thickness gauge, rotate the flywheel.
Repeat the above procedure for the second magneto.

Adjusting Valve Clearance adjustment

⚠ Risk of Burn. Allow the engine to cool before performing the following procedure.

Tools: feeler gauge, 10 mm wrench, 13 mm wrench, 14 mm wrench, 10 mm hex key

Remove spark plug wire(s) and position away from spark plug(s).
Remove spark plug(s).
Remove the four screws attaching valve cover. Remove and discard gasket.
Verify piston is at TDC of its compression stroke (both valves closed).
Loosen rocker jam nut using a 10 mm wrench (10 kW units) or 13 mm wrench (20-24 kW units).
Turn pivot ball stud using a 14 mm wrench (10 kW) or 10 mm hex key (20-24 kW) while checking clearance with a feeler gauge.
Hold pivot ball stud and tighten rocker arm jam nut.
Inspect valve clearance to verify it did not change.
Install new valve cover gasket and valve cover; tighten fasteners in a cross pattern.
Install spark plug(s) and tighten to 18 ft-lbs (25 Nm); attach spark plug wires.
Repeat process for other cylinder if equipped.

Ajustar a folga das válvulas adjustment

⚠ Risco de queimaduras. Deixe o motor esfriar antes de executar o procedimento.

Tools: Chave de 10 mm, Chave de 13 mm, Chave de 14 mm, Chave sextavada de 10 mm, Calibrador

Remova os fios das velas de ignição e remova as velas de ignição.
Remova os quatro parafusos que prendem a tampa da válvula; descarte a junta.
Verifique se o pistão está no TDC do seu curso de compressão.
Solte a contraporca do balanceiro (C) com chave de 10 mm ou 13 mm.
Gire o pino de esfera articulada (D) com chave de 14 mm ou sextavada de 10 mm e ajuste a folga.
Aperte a contraporca do braço oscilante e inspecione a folga novamente.
Instale a nova junta e as tampas das válvulas; aperte em padrão transversal.
Instale as velas e aperte a 25 Nm; conecte os fios das velas.

Ajuste de la separación de la válvula adjustment

⚠ Deje que el motor se enfríe antes del procedimiento.

⚠ Desconecte el cable negativo y luego el positivo de la batería.

⚠ No necesario en unidades 14 o 18 kW con motor de 816 cc.

Tools: Llave de 10 mm, Llave de 13 mm, Llave de 14 mm, Llave hexagonal de 10 mm, Galga de espesores

Retire los hilos de las bujías y las bujías.
Retire los cuatro tornillos de la cubierta de la válvula y deseche la junta.
Verifique que el pistón esté en el PMS de su carrera de compresión.
Suelte la contratuerca del balancín (llave 10 mm en 10 kW, 13 mm en 20 a 24 kW).
Gire el espárrago del pivote (llave 14 mm en 10 kW, hexagonal 10 mm en 20 a 24 kW) ajustando la separación.
Sostenga el espárrago y apriete la contratuerca del balancín.
Inspeccione la separación para verificar que no cambió.
Instale una junta nueva y la cubierta de la válvula; apriete en patrón cruzado.
Instale las bujías y apriete a 25 Nm (18 lb-pie).
Conecte los hilos de las bujías.

Ajuster le jeu des soupapes adjustment

⚠ Risque de brûlure : laisser le moteur refroidir avant d’exécuter la procédure.

⚠ Réglage non requis sur les modèles de 14 ou 18 kW à moteur de 816 cc.

Tools: Clé de 10 mm ou 13 mm, Clé de 14 mm ou clé hexagonale de 10 mm, Jauge d’épaisseur

Laisser le moteur refroidir.
Débrancher les câbles de bougie et les placer à l’écart.
Retirer les bougies.
Retirer les quatre vis du cache-culbuteurs et mettre le joint au rebut.
S’assurer que le piston est au point mort haut (PMH) de sa course de compression.
Desserrer le contre-écrou de culbuteur.
Faire tourner le goujon pivot tout en contrôlant le jeu avec une jauge d’épaisseur.
Ajuster le jeu conformément à la section Moteur.
Tenir le goujon pivot et serrer le contre-écrou au couple spécifié.
Poser un joint de cache-culbuteurs neuf et remonter le cache-culbuteurs.
Mettre les bougies en place au couple de 25 Nm (18 pi-lb).

Check and Adjust Engine Governor (Single Cylinder Units) adjustment

Tools: frequency meter

Loosen governor clamp bolt.
Hold governor lever at wide open throttle; rotate governor shaft clockwise fully; tighten clamp bolt to 70 inch-pounds.
Start generator and let stabilize at no-load.
Connect frequency meter across AC output leads.
Turn primary adjust screw to obtain 61.5 Hz.
Turn secondary adjust screw to obtain 62.5 Hz.
Check AC voltage; adjust voltage regulator if needed.

Check and Adjust Ignition Magnetos adjustment

⚠ Magneto air gap on single cylinder engines is non-adjustable.

Tools: VOM, thickness gauge 0.008-0.012 inch

Disconnect Wire 18 from terminal by oil cooler.
Disconnect spark plug wires from spark plugs.
Measure primary winding resistance: approximately 300K ±10K ohms.
Measure secondary winding resistance: approximately 14K ±3K ohms.
Check diode isolation between magnetos; INFINITY should be measured.
For V-twin, rotate flywheel until magnet is under laminations.
Place 0.008-0.012 inch thickness gauge between magnet and laminations.
Loosen mounting screws and let magnet pull magneto down against gauge.
Tighten both mounting screws.
Remove gauge by rotating flywheel.
Repeat for second magneto.
Retest for spark.

Check and Adjust Valves adjustment

⚠ Make sure piston is at TDC of compression stroke with both valves closed.

Tools: 10mm allen wrench, flat feeler gauge, torque wrench

Remove four screws from rocker cover.
Remove rocker cover and gasket.
Loosen rocker arm jam nut.
Use 10mm allen wrench to turn pivot ball stud; check clearance with flat feeler gauge.
When correct, hold stud and tighten jam nut to 174 inch pounds.
Recheck valve clearance.
Re-install gasket, cover, and four screws.

Conversión de combustible (GN a PL) adjustment

⚠ La perilla del selector de combustible debe ajustarse al combustible correcto para que el generador funcione correctamente.

Ubique la perilla de conversión de combustible naranja (bajo el mezclador en 10 kW; sobre el mezclador en 14 a 24 kW).
Gire la perilla de conversión hacia la flecha del tipo de combustible marcado hasta que se detenga.
La perilla gira 180° y se desliza hacia dentro del mezclador al convertir a propano líquido.
Ingrese la selección de combustible (PL/GN) en el controlador mediante el Asistente de instalación o el menú EDITAR.

Reconfiguring The Fuel System (6/7 kW, 410cc Engine) adjustment

⚠ Use approved pipe sealant or joint compound on all threaded fittings.

Turn off main gas supply.
Open roof and remove door.
Remove battery if installed.
Disconnect Wire 0 and Wire 14 from gas solenoid.
Remove carburetor fuel hose from demand regulator outlet.
Remove demand regulator mounting fastener.
Swap pipe plug and brass hose barb between outlet ports.
Reverse steps to reinstall demand regulator.
Insert plastic plug into 3/4 inch hole on air cleaner base.
Check for gas leakage at plug, hose, and fittings.

Reconfiguring The Fuel System (9, 10, 13, 16, 18 kW V-twin Engines) adjustment

Open the roof.
For 9/10 kW: loosen clamp and slide back air inlet hose; slide fuel selector out toward back; return hose and tighten clamp.
For 13/16/18 kW: remove air cleaner cover; slide selector lever out toward back; return cover and tighten thumb screws.
Close the roof.
Reverse procedure to convert back to natural gas.

Reconfiguring the Fuel System (8kW) adjustment

⚠ Gaseous fuels are highly explosive. No leakage permitted.

Tools: plastic T-handle fuel selector

Turn off main gas supply.
Open roof and remove door.
Remove battery if installed.
Insert T-handle pin into selector knob hole.
Pull out to overcome spring pressure, twist clockwise 90 degrees.
Allow selector to return once aligned with LP position.
Save tool with Owner's Manual.
Install battery, door, close roof; reverse to convert back.

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

Voltage	Phase	Connection	Leads	Notes
		Control system interconnections	N1, N2, 0, 15B, 23	Can be run in same conduit as AC power if length < 35 feet and all wiring rated 600V
		N1, N2, T1, Leads 23 and 194	All conductors rated for minimum 300V	Class 1 remote control/signaling circuits. Install per NEC Article 300 and recognized wiring methods. Sense wires through wire tie C1 to sense wire terminal block B. Control wires through wire tie C2 to control wire terminal block A.
	1	Connect a 2008 and later load center switch to a pre-2008 air-cooled generator: Wire 0 will not be utilized. Remove battery charger from the transfer switch. Connect N1 (BLU) to N1 (YEL), N2 (YEL) to N2 (YEL), 23 (BRN) to 23 (WHT), 194 (ORG) to 15B (RED) using UL approved wire nuts.	N1, N2, 23, 194, 15B, 0	Battery charger in transfer switch will not be utilized in operation of the generator.
	1	Connect a pre-2008 load center switch to a current or future air-cooled generator: Wire 0 will not be utilized. Connect N1 (BLU) to N1 (YEL), N2 (YEL) to N2 (YEL), 23 (BRN) to 23 (WHT), 194 (ORG) to 15B (RED) using UL approved wire nuts.	N1, N2, 23, 194, 15B, 0	Wire 194 changed to 15B on current model air-cooled generators.
120	1	Battery charger AC input to generator backed-up 120VAC circuit	120VAC hot, neutral	Connect via wire nuts
120/240	1	GENERATOR (STANDBY) source power cables to ATS GENERATOR supply terminals	E1, E2	200A models
120/240	1	Non-essential customer LOAD leads to LSS switch terminals	E1, E2	Load shed switch
120/240	1	UTILITY (NORMAL) power source cables to top of UTILITY SERVICE DISCONNECT circuit breaker	N1, N2	200A models
240	1	Transfer switch terminal lugs: connect utility source hot lines to N1 and N2; connect standby source hot lines (E1, E2) to E1 and E2; connect load lines from T1 and T2 to electrical load circuit; connect UTILITY, STANDBY and LOAD neutral lines to neutral block.	N1, N2, E1, E2, T1, T2	In 1-phase systems with a 2-pole transfer switch.

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 oil capacity of the Generac G-Force 800 Series?

The Generac G-Force 800 Series engine has an oil capacity of 2.1 liters.

What is the displacement of the Generac G-Force 800 Series?

The Generac G-Force 800 Series has a displacement of 0.816 liters with 2 cylinders.

Which generators use the Generac G-Force 800 Series engine?

The Generac G-Force 800 Series powers 16 generator set(s), including Generac G007173-0, Generac G007174-0, Generac G007175-0, Generac G007176-0, Generac G007177-0.

How often should you change the oil in the Generac G-Force 800 Series?

The Generac G-Force 800 Series oil change interval is every 200 hours.

What is a common problem with the Generac G-Force 800 Series engine?

A commonly reported issue on generators using the Generac G-Force 800 Series is: Wi-Fi network connection broken or intermittent. Cause: Various.. Fix: See Wi-Fi module owner’s manual..