McCulloch 96083000300, 433691, MC550 manual To Replace V-BELT see, To Adjust Carburetor

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SERVICE AND ADJUSTMENTS

TO REPLACE V-BELT (SEE Fig. 20 - 22)

Clutch housing/engine assembly must be removed to service belt. See "TO REMOVE CLUTCH HOUSINGI- ENGINE ASSEMBLY" in this section of manual.

Using pliers, remove cable spring and return spring from pivot bracket.

Remove plastic snap-in plug from clutch housing.

Using pliers, depress conduit fitting tabs and pull conduit fitting through hole in clutch housing.

Pull cable spring and cable through snap-in plug hole in clutch housing.

CLUTCH

BELT

RETURN

CABLE

HOUSING

GUIDE

SPRING

SPRING

 

STUD

 

 

 

 

 

SNAP-IN

 

 

 

PLUG

 

 

 

TABS

 

 

 

CONDUIT

 

 

 

FITTING

 

 

 

CABLE

 

 

Fig. 20

 

Remove bolt, washer, and lock nut attaching idler bracket to clutch housing.

BOLT

WASHER

 

 

CLUTCH

 

HOUSING

 

SNAP-IN

 

PLUG

 

LOCK NUT

Fig. 21

Remove bolt, washer, and lock nut attaching idler pulley to idler bracket. Remove bushing from between idler bracket and clutch housing.

 

BOLT

IDLER PULLEY

WASHER

 

 

IDLER BRACKET

 

BUSHING

 

LOCK NUT

Fig. 22

Replace belt and reinstall pulley, idler bracket, conduit fitting, springs, and hardware in reverse order.

Reinstall clutch housing/engine assembly, making sure belt is inside belt guide stud.

Check tine operation. See "To Check Tine Operation" in this section of manual.

ENGINE

TO ADJUST CARBURETOR

The carburetor has been preset at the factory and adjustment should not be necessary. However, engine performance can be affected by differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, contact your nearest authorized service center/department

IMPORTANT: NEVER TAMPER WITH THE ENGINE GOVER- NOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS THE PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

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Contents MC550 Training Safety RulesMaintenance and Storage PreparationTable of Contents Contents of Hardware Pack AssemblyTools Required for Assembly Tine Operation To Install Depth Stake See FigTilling Width Know Your Tiller Meets Ansi Safety RequirementsOperation Tine Operation See Fig HOW to USE Your TillerStopping See Fig TillingCheck Engine OIL Level See Fig Before Starting EngineADD Gasoline Cultivating Breaking in Your TillerTilling Hints General Recommendations MaintenanceMaintenance Schedule AIR Filter EngineTo Change Engine OIL See Fig Muffler CleaningCooling System See Fig Spark PlugTiller Service and AdjustmentsTo Remove Clutch HOUSING/ENGINE Assembly see FIG Tine ArrangementTo Adjust Carburetor To Replace V-BELT seeFuel System StorageOther Engine OILTroubleshooting Problem Cause CorrectionTiller - Model Number MC550 DecalsENGINE, TRANSMISSION, and Tines 421338 Engine HANDLE, WHEEL, and Depth Stake Tiller - Model Number MC550 Limited Warranty

96083000300, MC550, 433691 specifications

The McCulloch 433691, also known as the MC550, is a versatile and robust chainsaw designed for both homeowners and professionals seeking efficiency and reliability in their tools. Packed with advanced features and cutting-edge technologies, the MC550 stands out in a competitive market.

One of the primary highlights of the McCulloch 433691 is its powerful engine. It is equipped with a robust 50cc two-stroke engine that delivers impressive cutting power. This engine ensures efficient fuel consumption while providing high torque, which allows for faster cuts through various types of wood. The chainsaw’s lightweight design, combined with this powerful engine, offers users great maneuverability, making it ideal for both trimming branches and felling larger trees.

The MC550 is built with an automatic oiling system, which guarantees that the chain remains lubricated during operation. This feature not only enhances the longevity of the chain and bar but also ensures smoother cutting action and less wear and tear on the tool. Additionally, the chainsaw's tool-free chain tensioning system provides convenience, allowing users to easily adjust the chain without the need for additional tools, thus saving time and effort.

Safety is a top priority in the design of the McCulloch 433691. The chainsaw incorporates several safety features, including a chain brake that instantly halts the chain in case of kickback. The anti-vibration system further enhances user comfort, significantly reducing fatigue during prolonged use. The ergonomic handle is designed to provide a secure grip, ensuring better control while operating the saw.

Another notable characteristic of the MC550 is its user-friendly design. The chainsaw comes with clear instructions, making it straightforward for beginners while still providing all the necessary functionality that experienced users might expect. The compact size and lightweight nature of the saw enable easy transport and storage.

In summary, the McCulloch 433691 (MC550) is a powerful and efficient chainsaw, featuring a robust engine, automatic oiling system, and essential safety mechanisms. Its blend of performance, convenience, and safety makes it an excellent choice for anyone looking to tackle outdoor cutting tasks with ease and confidence. Whether you are a homeowner needing to maintain your garden or a professional arborist, the MC550 is equipped to meet your chainsawing needs effectively.