McCulloch 966992201, MCT3362VA, 9096336202 Maintenance Instructions Troubleshooting the Engine

Page 9

7 - MAINTENANCE INSTRUCTIONS

8 - TROUBLESHOOTING THE ENGINE

7-4. CARBURETOR ADJUSTMENT

The carburetor was pre-set at the factory for optimum per- formance. The only adjustment should be to idle speed see section 5-4, Idling/Carburetor adjustment.

7-5. SPARK PLUG

1.To remove spark plug B (figure 7-6A) for cleaning or replacement: make sure engine is off, spark plug is cool then grasp spark plug boot firmly and remove from spark plug. Remove spark plug with correct spark plug tool. Inspect, clean or replace as needed.

2.Spark plug gap = .025" (.635mm) (Figure 7-5A).

3.Torque to 105 to 130 inch pounds (12 to 15 N•m). Connect spark plug boot.

4.If necessary, replace with Champion RZ7C or equiva- lent.

.025" (.635mm)

7-5A

7-6. SPARK ARRESTER SCREEN

1.To replace spark arrester screen (A) (Figure 7-6A), use a needle nose pliers, pinch an edge of the spark arrester screen. Pull the whole spark arrester screen out.

2.Use the needle nose pliers to push in a new spark arrester screen. Then open the pliers a little to press the inner surface of the spark arrester screen to fasten it.

B

A

7-6A

7-7. DEBRIS SHIELD KNIFE SHARPENING

1.Remove cutter knife (A) from debris shield (B) (Figure 7-7A).

2.Place knife in a bench vise. Sharpen knife using a flat file, being careful to maintain the angle of cutting edge. File in one direction only.

A

B

7-7A

7-8. STORING A UNIT

Failure to follow these steps may cause varnish to form in the carburetor and difficult starting or perma-

nent damage following storage.

1.Perform all the general maintenance recommended in the Maintenance Section of your User Manual.

2.Clean exterior of engine, drive shaft assembly, debris shield and stringhead.

3.Drain fuel from the fuel tank.

4.After fuel is drained, start engine.

5.Run engine at idle until unit stops. This will purge the carburetor of fuel.

6.Allow engine to cool (approx. 5 minutes).

7.Using a spark plug wrench, remove the spark plug.

8.Pour 1 teaspoon of clean 2-cycle oil into the combustion chamber. Pull starter rope slowly several times to coat internal components. Replace spark plug.

9.Store unit in a cool, dry place away from any source of ignition such as an oil burner, water heater, etc.

7-9. REMOVING A UNIT FROM STORAGE

1.Remove spark plug.

2.Pull starter rope briskly to clear excess oil from com- bustion chamber.

3.Clean and gap spark plug or install a new spark plug with proper gap.

4.Prepare unit for operation.

5.Fill fuel tank with proper fuel / oil mixture. See Fuel and Lubrication Section.

PROBLEM

PROBABLE CAUSE

CORRECTIVE ACTION

 

 

 

 

Incorrect starting procedures.

Follow instructions in the User Manual.

 

 

 

 

Incorrect carburetor mixture adjustment

Have carburetor adjusted by an

 

setting.

McCulloch Authorized Service Center.

Unit won’t start or starts but will not run.

 

 

 

 

 

 

Fouled spark plug

Clean / gap or replace plug.

 

 

 

 

Fuel filter plugged.

Replace fuel filter.

 

 

 

 

Incorrect lever position on choke.

Move to RUN position.

 

 

 

 

Dirty spark arrester screen.

Replace spark arrester screen.

Unit starts, but engine has low power.

 

 

 

 

 

Dirty air filter.

Remove, clean and reinstall filter.

 

 

 

 

Incorrect carburetor mixture adjustment

Have carburetor adjusted by an

 

setting.

McCulloch Authorized Service Center.

 

 

 

Engine hesitates.

 

 

 

Incorrect carburetor mixture adjustment

Have carburetor adjusted by an

 

setting.

McCulloch Authorized Service Center.

 

No power under load.

 

 

 

 

 

Runs erratically.

Incorrectly gapped spark plug.

Clean / gap or replace plug.

 

 

 

 

Incorrect carburetor mixture adjustment

Have carburetor adjusted by an

 

setting.

McCulloch Authorized Service Center.

Smokes excessively.

 

 

 

Incorrect fuel mixture

Use properly mixed fuel (40:1 mixture).

 

 

 

16

17

Image 9 McCulloch 966992201, MCT3362VA, 9096336202 manual Maintenance Instructions Troubleshooting the Engine
Contents USA StopSafety Features Table of ContentsIntroduction General Information General IdentificationSpecifications Safety PrecautionsWhat to do What not to doInternational Symbols Safety Precautions Assembly InstructionsHandle Assembly Debris ShieldFuel and Lubrication Operating Instructions Operating Instructions Trimming Instructions Trimming Instructions Maintenance Instructions AIR Filter Replacing Cutting LineFuel CAP / Fuel Filter LineMaintenance Instructions Troubleshooting the Engine ONE Year Limited Warrnaty Troubleshooting the StringheadTable DES Matieres IntroductionCaracteristiques GeneralitesIdentification DES Principaux Dispositifs DE SecuriteMeasures DE Securite Symboles InternationauxChoses a Faire Choses a NE PAS FaireInstructions Pour Montage Carburant ET Lubrification Demarrage D’UN Moteur Froid FonctionnementDemarrage DU Moteur Chaud Pour Arret DU MoteurMesures DE Securite SUPPLEMEN- Taires Instructions Pour LA CoupeAvance DU FIL DE Coupe Instructions Pour LA CoupeEntretien Remplacement DU FIL DE CoupeHeures Chaque ’OPERATION UsageBouchon DU Reservoir / Filtre a Carburant Filtre a AIRReglage DU Carburateur BougieProbleme Cause Probable Solution Depannage DU MoteurDepannage DE LA Tete DE Coupe Garantie Limitée DE UN Année Tabla DE Contenidos Introduccion Informacion GeneralIndentificacion General Caracteristicas DE SeguridadEspecificaciones Precautiones DE SeguridadQUE Hacer QUE no HacerSimbolos Internacionales Precautiones DE Seguridad Instrucciones DE EnsembladoEnsamblaje DEL Manillar P Protector DE DesechosCombustible Y Lubricacion Instrucciones DE Operacion Instrucciones DE Operacion Instrucciones Para LA Poda Instrucciones Para LA Poda Instrucciones DE Mantenimiento Reemplazo DE LA Linea DE LA Cortadora Filtro DE AireTapa DE Combustible / Filtro DE Combustible Afilado DE LA Navaja DEL PROTEC- TOR DE Desechos Ajuste DEL CarburadorParachispas Almacenando UNA UnidadGarantía Limitada DE UN AÑO

9096336202, MCT3362VA, 966992201 specifications

The McCulloch 966992201, MCT3362VA, and 9096336202 represent a trio of high-quality outdoor power equipment designed to meet the needs of both professionals and DIY enthusiasts. McCulloch is renowned for its commitment to innovation, reliability, and performance, and these models uphold that reputation with varied features and technologies aimed at enhancing user experience.

The McCulloch 966992201 is a robust chainsaw that stands out for its powerful engine and exceptional cutting capabilities. With a 50cc engine, it delivers high performance and efficiency, allowing users to tackle even the toughest wood cutting tasks with ease. The chainsaw features an automatic oiling system, ensuring the chain remains lubricated, which enhances durability and reduces maintenance needs. Additionally, its lightweight design ensures that users can maneuver the chainsaw comfortably, minimizing fatigue during extended use.

The MCT3362VA is a versatile multi-tool that offers a range of attachments for various gardening tasks, including trimming, edging, and pruning. This model features a powerful engine that ensures reliable performance for various attachments. Its easy-to-switch system allows users to interchange different tools effortlessly, making it an invaluable asset for both yard maintenance and extensive landscaping projects. The ergonomic design supports user comfort, and the adjustable handle increases versatility for multiple operating positions.

Lastly, the 9096336202 model is a high-performance leaf blower that efficiently clears debris and leaves, making it ideal for maintaining clean outdoor spaces. With a powerful air output, this blower can easily manage both light and heavy debris, enhancing cleanliness in gardens and yards. The ergonomic design and lightweight structure enhance maneuverability, while the variable speed settings allow users to adjust airflow according to their needs.

All three models incorporate McCulloch’s innovative technologies, designed to improve efficiency and ease of use. Features like their air purge system for easier starting, vibration-dampening mechanisms to reduce user fatigue, and advanced filtration systems for cleaner operation highlight the brand's focus on user-friendly designs. Collectively, the McCulloch 966992201, MCT3362VA, and 9096336202 represent a comprehensive range of solutions for outdoor maintenance, ensuring that users enjoy powerful performance and durability with every use. Whether you’re cutting, trimming, or cleaning, McCulloch provides the tools you need to get the job done effectively.