ECHO GC351

ECHO GC351 Chainsaw User Manual

Model: GC351 | Engine: 34.0cc | Bar Length: 35cm

1. Introducció

This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your ECHO GC351 chainsaw. Please read and understand all instructions before operating the machine. Proper use and maintenance will ensure optimal performance and extend the lifespan of your chainsaw.

2. Informació de seguretat

Operating a chainsaw can be hazardous. Always prioritize safety to prevent serious injury or death. Adhere to all local regulations and safety guidelines.

2.1 Equips de protecció individual (EPI)

  • Protecció del cap: Porteu un casc de seguretat.
  • Protecció ocular: Use safety glasses or a face shield.
  • Protecció auditiva: Wear earplugs or earmuffs.
  • Protecció de les mans: Feu servir guants de treball resistents.
  • Protecció de les cames: Use chainsaw protective trousers or chaps.
  • Protecció dels peus: Utilitzeu botes de seguretat amb punta d'acer i bona adherència.

2.2 Seguretat de l'àrea de treball

  • Assegureu-vos que la zona de treball estigui lliure de vianants, nens i mascotes.
  • Mantingueu una postura estable i l'equilibri en tot moment.
  • Clear away obstacles that could cause you to trip or lose balance.
  • Do not operate the chainsaw in wet conditions or in areas with poor visibility.

2.3 Seguretat del combustible

  • Handle fuel in a well-ventilated area, away from sparks or open flames.
  • Do not smoke while fueling the chainsaw.
  • Netegeu immediatament qualsevol combustible vessat.
  • Store fuel in approved containers.

2.4 Seguretat de funcionament

  • Always hold the chainsaw firmly with both hands, with your thumbs and fingers encircling the handles.
  • Estigueu atents contragolpe, which can occur when the moving chain at the tip of the guide bar contacts an object.
  • Never operate the chainsaw when fatigued, ill, or under the influence of alcohol or drugs.
  • No s'excés ni talleu per sobre de l'alçada de les espatlles.

3. Components i controls

Familiarize yourself with the various parts of your ECHO GC351 chainsaw before operation.

ECHO GC351 Chainsaw cutting a log

Imatge 3.1: The ECHO GC351 chainsaw in operation, demonstrating its use for cutting logs. The image shows the guide bar and chain engaged with a wooden log, with sawdust visible on the ground. A gloved hand is holding the rear handle, indicating proper two-hand operation.

  1. Barra de guia: Suporta i guia la cadena de la serra.
  2. Cadena de serra: El component de tall de la motoserra.
  3. Front Hand Guard: Protects the operator's left hand and activates the chain brake.
  4. Mànec davanter: For the operator's left hand.
  5. Grip d'arrencada: S'utilitza per engegar el motor.
  6. Palanca d'asfixia: S'utilitza per a l'arrencada en fred del motor.
  7. Mànec posterior: For the operator's right hand, contains throttle controls.
  8. Activador de l'accelerador: Controla la velocitat del motor.
  9. Throttle Trigger Lockout: Evita l'accionament accidental de l'accelerador.
  10. Fre de cadena: Safety device to stop the chain quickly.
  11. Silenciador: Redueix el soroll del motor i dirigeix ​​els gasos d'escapament.
  12. Tapa del dipòsit de combustible: Covers the fuel tank opening.
  13. Tap del dipòsit d'oli: Covers the chain oil tank opening.
  14. Interruptor d'aturada del motor: Turns the engine off.

4. Configuració

4.1 Guide Bar and Saw Chain Assembly

  1. Assegureu-vos que el motor estigui apagat i que la tapa de la bugia estigui desconnectada.
  2. Remove the chain cover nuts and chain cover.
  3. Place the saw chain around the clutch drum and guide bar. Ensure the cutting edges face forward on the top of the guide bar.
  4. Mount the guide bar onto the studs, aligning the chain tensioner pin with the hole in the guide bar.
  5. Torneu a col·locar la coberta de la cadena i estrenyeu les femelles sense apretar.
  6. Adjust chain tension using the tensioning screw. The chain should be snug against the guide bar but still able to be pulled freely by hand.
  7. Tighten the chain cover nuts securely.

4.2 Alimentació

The ECHO GC351 uses a 2-stroke engine. It requires a specific mixture of gasoline and 2-stroke engine oil.

  • Mescla de combustible: Use unleaded gasoline mixed with high-quality 2-stroke engine oil at a ratio specified by the manufacturer (typically 50:1 or 25:1, refer to your engine oil's instructions).
  • Dipòsit de combustible: Carefully fill the fuel tank, avoiding overfilling. Securely close the fuel tank cap.
  • Dipòsit d'oli de cadena: Fill the chain oil tank with appropriate chain lubricant. This oil is crucial for lubricating the guide bar and chain during operation. Securely close the oil tank cap.

5. Instruccions de funcionament

5.1 Arrencada del motor

Cold Start (First start of the day or after a long period of inactivity):

  1. Col·loqueu la motoserra sobre una superfície plana i ferma.
  2. Involucrar el fre de cadena by pushing the front hand guard forward.
  3. Estableix el engine stop switch a la posició ON.
  4. Estira el palanca d'asfixia to the FULL CHOKE position.
  5. If equipped, press the bulb de imprimació several times until fuel is visible.
  6. Hold the front handle firmly with one hand and pull the starter grip briskly until the engine fires (usually a few pulls).
  7. Once the engine fires, immediately push the palanca d'asfixia to the HALF CHOKE or RUN position.
  8. Estira el starter grip again until the engine starts and runs smoothly.
  9. Briefly blip the disparador de l'accelerador to disengage the half-choke.
  10. Desenganxar el fre de cadena by pulling the front hand guard back towards the front handle. The chain should now be free to move.

Warm Start (Engine is already warm from recent use):

  1. Col·loqueu la motoserra sobre una superfície plana i ferma.
  2. Involucrar el fre de cadena.
  3. Estableix el engine stop switch a la posició ON.
  4. Assegureu-vos el palanca d'asfixia is in the RUN position.
  5. Hold the front handle firmly and pull the starter grip briskly until the engine starts.
  6. Desenganxar el fre de cadena.

5.2 Tècniques de tall

  • Always maintain a firm, balanced stance.
  • Keep both hands on the chainsaw handles at all times during operation.
  • Eviteu tallar amb la punta de la barra guia per minimitzar el risc de contragolpes.
  • When cutting, allow the chain to do the work. Do not force the saw.
  • Be aware of falling branches or logs and plan your escape route.

5.3 Parar el motor

  1. Allibera el disparador de l'accelerador to allow the engine to return to idle.
  2. Involucrar el fre de cadena.
  3. Mou el engine stop switch a la posició OFF.

6. Manteniment

Regular maintenance is crucial for the safe and efficient operation of your chainsaw. Always ensure the engine is off and the spark plug cap is disconnected before performing any maintenance.

6.1 Daily / Before Each Use

  • Comproveu chain tension: Adjust if too loose or too tight.
  • Comproveu chain sharpness: Sharpen if dull or damaged.
  • Verificar chain oil level: Refill as needed.
  • Inspeccionar nivell de combustible: Refill with proper fuel mixture.
  • Comproveu filtre d'aire for excessive dirt.
  • Prova fre de cadena funcionalitat.

6.2 Després de cada ús

  • Netegeu el filtre d'aire.
  • Netegeu el guide bar groove and oil holes.
  • Remove sawdust and debris from the cadena and sprocket area.
  • Neteja engine cooling fins per evitar el sobreescalfament.

6.3 Manteniment periòdic

  • Afilat de cadena: Sharpen the saw chain regularly using a round file of the correct diameter. Refer to the chain manufacturer's instructions.
  • Bujía: Inspeccioneu i netegeu la bugia. Substituïu-la si els elèctrodes estan desgastats o bruts.
  • Filtre de combustible: Inspect and replace the fuel filter as needed.
  • Silenciador: Clean carbon deposits from the muffler and exhaust port.

7. Solució De Problemes

This section addresses common issues you might encounter with your ECHO GC351 chainsaw.

ProblemaCausa possibleSolució
El motor no arrencaNo fuel, incorrect choke setting, fouled spark plug, chain brake engagedCheck fuel level and mixture, adjust choke, clean/replace spark plug, disengage chain brake
El motor arrenca però s'aturaIncorrect choke setting, dirty air filter, stale fuelAdjust choke, clean air filter, replace fuel with fresh mixture
La cadena no talla de manera eficientDull chain, incorrect chain tension, chain installed backwardSharpen chain, adjust tension, check chain direction
Excés de fum de l'escapamentIncorrect fuel/oil mixture, dirty air filterVerify fuel mixture ratio, clean air filter

8. Especificacions

Technical specifications for the ECHO GC351 Chainsaw.

CaracterísticaEspecificació
MarcaECO
ModelGC351
Desplaçament del motor34.0 cc
Font d'alimentacióDe gasolina
Longitud de la barra guia35 cm
Pes del producte4 kg
Dimensions del paquet85 x 29 x 29 cm
FabricantYamabiko Corporation
ASINB07CG74NP7
Primera data disponible2018/04/18

9. Garantia i Suport

For warranty information, technical support, or service inquiries regarding your ECHO GC351 chainsaw, please contact the retailer where the product was purchased or refer to the official ECHO website for authorized service centers and contact details. Keep your proof of purchase for warranty claims.

© 2026 ECHO / Yamabiko Corporation. All rights reserved. Information in this manual is subject to change without notice.

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