Zenoah G621AVS manual Icing Prevention System, ANTI-FREEZE Parts

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F8-9

F8-10

F8-11

English

8. Operation

3.Turn idle adjusting screw (T) counterclockwise so that saw chain does not turn. If idling speed is too slow, turn the screw clockwise.

4.Make a test cut adjust the H needle for best cutting power, not for maximum speed.

(1)L needle

(2)H needle

(3)Idle adjusting screw

ICING PREVENTION SYSTEM

This system prevents icing of the carburetor which sometimes happen while sawing in winter.

When your saw has stopped or slowed down abruptly, use the system as follows:

1.Remove the air cleaner cover, air filter, and silencer. (F8-9)

(1)Cylinder cover

(2)Air cleaner cover

(3)Intake silencer

(4)Air filter

2.Unhook the hatch on the rear wall of the cylinder cover and turn it upside down. (F8-10)

3.Install the covers as they are.

IMPORTANT

Never use the system in normal temperature because that can cause starting failure due to overheating of the carburetor.

(1) Hatch

ANTI-FREEZE PARTS

For use under extra cold condition. Optional parts as shown right are available. When normal air filter is frozen even with the hatch opened, contact your nearest dealer for the anti-freeze kit parts. (F8-11)

(1)Air inlet plug (P/N 2610-83220)

(2)Cylinder cover for cold use (P/N 2626-31110)

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Contents G621AVS Contents Differents Types D’AVERTISSEMENT DE CE Mode D’EMPLOI Tables des matieres ContenidoAdvertencias Contenidas EN EL Manual Specifications G621AVS Power unitParts location Especificaciohes Emplacement des pieces Situación de las piezasFiche technique G621AVS Groupe moteurUse the chain saw with two hands Read operators instruction book beforeOperating this machine Read, understand and follow all warningsSujete siempre la motosierra con ambas manos Symbols on the machine Emission ControlInformation du moteur importante Control de emisionesFor safe operation Consignes de securite Instrucciones de seguridad For safe operation Consignes de securite Instrucciones de seguridad Kickback Safety Precautions for Chain SAW Users Consignes de securite Instrucciones de seguridad For safe operation Consignes de securite Instrucciones de seguridad Chain cover Tensioner nut Installing guide bar and saw chainF6-1 F6-2 F6-3 Moving DirectionDesserrer Serre Carter de chaîne Ecrou de tendeurSens de rotation Cubierta de la cadena Tuerca del tensorWhen using RedMax/ZENOAH genuine oil Fuel and chain oilRecommended Mixing Ratio Gasoline 50OIL Proporción DE LA Mezcla Recomendada Gasolina 50 Aceite Rapport DE Melange Recommande Essence 50 HuileLors de l’utilisation de la véritable huile RedMax/ZENOAH Al utilizar el aceite auténtico de RedMax/ZENOAHHOW to MIX Fuel Fueling the UnitComment Obtenir UN BON Melange Como Mezclar EL Combustible Remplissage DU ReservoirAbastecimiento DE LA Unidad For Your Engine LIFE, Avoid Chain OILEviter Pour Prolonger LA Duree DE VIE DU Moteur Para Contribuir a LA Vida Útil DEL MOTOR, EviteHuile Pour Chaîne Aceite Para LA Cadena Operation F8-1 F8-2 F8-3 F8-4 F8-5Starting Engine Démarrage DU Moteur ArranqueAceite para la cadena Combustible Interruptor Cierre Adjusting Carburetor F8-8 Checking OIL SupplyRéglage DU Carburateur F8-8 Ajuste DEL Carburador F8-8 Icing Prevention System ANTI-FREEZE PartsDispositif DE Prévention Contre LA Congélation Pieces ANTI-GELPiezas Anticongelante Chain Brake How to confirmF8-12 F8-13 F8-14 Front handle Released Braking Brake leverArrêt DU Moteur Apagado DEL MotorSawing Guard Against Kickback F9-1Mesures DE Protection Contre LES Rebonds F9-1 Protección Contra Contragolpe F9-1Felling a Tree F9-2 Travail à la tronçonneuse Utilización de la motosierra Abattage D’UN Arbre F9-2 Talado DE Árboles F9-2Log lying on the ground F9-3 Log hanging off the ground F9-4Cutting Limb of Fallen Tree F9-5 Ebranchage d’un arbre abattu F9-5 Tronc reposant sur le sol F9-3Tronc en surélévation F9-4 Elagage d’un arbre F9-6Oiling port MaintenanceMaintenance After Each USE Oiling port Guide barEntretien Apres Chaque Utilisation Mantenimiento Después DE Cada USOPeriodical Service Points Cylinder finsFuel filter Entretien Periodique Puntos DE Servicio PeríodicoSpark arrester Replacement plug Champion RCJ-7Y or NGK BPM7A SprocketSpark plug Front and Rear dampersPare-étincelles BougieBujía ParachispasMaintenance of Saw Chain and Guide Bar SAW ChainMéthode et critères d’affûtage Porter des gants de sécurité Avant l’affûtageGB BAR Guide BAROregon BAR Oregon ChainBarra Oregon GUIDE-CHAÎNEBarra Guía Barra GBTroubleshooting Guide Case 2. Lack of power/Poor acceleration/ Rough IdlingCase 3. Oil does not come out Cas 1. Défaut de démarrage Guide de dépannage12. Guía para la localización de averías Caso 1. Falla de arranqueRangement StorageDisposal Mise au rebutG621AVS NotaFig.A-1 Power Unit G621AVS Fig.A-2 Power Unit RCJ7Y Fig.B Carbburetor Fig.D Cutting Head Chain Saws Limited Warranty Garantie limitée des tronçonneuses Garantía Limitada DE LAS Motosierras Page Zenoah AMERICA, INC

G621AVS specifications

The Zenoah G621AVS is a powerful and reliable two-stroke engine designed for a wide range of applications, particularly in the realm of remote-controlled (RC) models and outdoor power equipment. Recognized for its blend of performance, efficiency, and durability, the G621AVS is a popular choice among hobbyists and professionals alike.

One of the standout features of the G621AVS is its displacement of 62cc, which provides a significant power output, making it suitable for various applications including RC helicopters, airplanes, and large-scale gardening equipment. This engine is engineered with a parallel twin-cylinder configuration, allowing for improved torque and smoother operation, which enhances overall performance and responsiveness.

The G621AVS utilizes advanced anti-vibration systems to reduce operational vibrations. This technology ensures user comfort and improves the longevity of the engine components by minimizing wear and tear caused by excessive vibrations. Consequently, operators can enjoy extended periods of use without fatigue, whether they are flying an RC aircraft or operating gardening tools.

Zenoah has also implemented a sophisticated carburetor system in the G621AVS, optimizing fuel efficiency while ensuring high performance. The engine is designed to deliver a stable fuel-air mixture, allowing for consistent power output and reliable starts. This results in lower fuel consumption, which is not only cost-effective but also environmentally friendly, reducing emissions without sacrificing performance.

Another characteristic of the G621AVS is its robust construction. Built with high-quality materials, the engine is designed to withstand harsh operating conditions. The durable design prolongs the lifespan of the engine, giving users confidence in their investment while ensuring dependable operation in various environments.

Easy maintenance is another key feature of the G621AVS. The engine is designed for straightforward access to components, making regular maintenance tasks less time-consuming and more accessible for users. Zenoah provides comprehensive support and resources, ensuring users can efficiently maintain high performance over the life of the engine.

In conclusion, the Zenoah G621AVS stands out in the competitive landscape of two-stroke engines, thanks to its powerful output, advanced technologies, and user-friendly features. Whether used in RC hobbies or professional applications, this engine promises reliability and efficiency, making it a top choice for those seeking performance and durability.