McCulloch MM3550SM Spare Parts List

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Year 2007

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McCulloch MM3550SM Specification

The McCulloch MM3550SM Lawn Mower is a robust and efficient gardening tool designed to provide precise cutting performance and ease of use. It features a powerful 160cc overhead valve (OHV) engine that ensures optimal power delivery and fuel efficiency, making it suitable for medium to large-sized lawns. The mower is equipped with a 21-inch steel cutting deck, which provides a wide cutting path to reduce mowing time while maintaining durability and resistance against impacts.

The cutting height is adjustable, offering a range from 1.25 inches to 3.75 inches, allowing users to tailor the grass cutting to their preferred length. This mower incorporates a 3-in-1 functionality, enabling grass collection in the rear bag, side discharge, or mulching capabilities to return nutrients to the lawn. The ergonomic design includes a foldable handle, which enhances storage convenience and portability.

Operational stability is ensured through its large rear wheels, which facilitate smooth maneuvering over various terrains. The MM3550SM also features a user-friendly recoil start system, minimizing startup effort. Additionally, the mower is constructed with high-quality materials, ensuring long-lasting performance and reliability under regular use conditions.

Overall, the McCulloch MM3550SM Lawn Mower is engineered for users seeking a balance of power, versatility, and user comfort, making it an ideal choice for maintaining a well-manicured lawn with minimal effort.

McCulloch MM3550SM F.A.Q.

How do I start the McCulloch MM3550SM Lawn Mower?

To start the McCulloch MM3550SM Lawn Mower, ensure the fuel tank is filled and the oil level is adequate. Set the choke lever to the 'Start' position if the engine is cold. Pull the starter rope firmly to start the engine. Once started, move the choke lever to the 'Run' position.

What should I do if the lawn mower doesn't start?

If the lawn mower doesn't start, check for sufficient fuel and oil levels. Ensure the spark plug is clean and connected properly. Inspect the air filter for blockages and clean or replace it if necessary. If the problem persists, consult the user manual or contact customer support.

How often should I change the oil in the McCulloch MM3550SM?

It is recommended to change the oil every 25 hours of use or at least once a season to ensure optimal performance and longevity of the engine.

What type of fuel is best for the McCulloch MM3550SM?

Use fresh, unleaded gasoline with an octane rating of 87 or higher. Avoid using fuel with more than 10% ethanol content to prevent damage to the engine components.

How do I clean the air filter on my McCulloch MM3550SM?

To clean the air filter, remove the filter cover and take out the filter. Wash it with warm, soapy water, rinse thoroughly, and allow it to dry completely. Reinstall the filter and cover before using the mower again.

Why is my lawn mower vibrating excessively during operation?

Excessive vibration can be caused by a damaged or unbalanced blade. Inspect the blade for damage or debris and clean or replace it as necessary. Ensure the blade is properly tightened to the mower deck.

How do I adjust the cutting height on the McCulloch MM3550SM?

To adjust the cutting height, locate the height adjustment lever on the wheel assemblies. Move the lever to the desired position to adjust the height of the cutting deck. Make sure all wheels are set to the same height for an even cut.

What should I do if the lawn mower's engine is overheating?

If the engine is overheating, ensure the cooling fins are clean and free of debris. Check the oil level and top up if necessary. Avoid using the mower in extremely hot conditions for prolonged periods.

How can I safely store the McCulloch MM3550SM for the winter?

To store the mower for winter, drain the fuel tank and run the engine until it stops. Clean the mower thoroughly and check for any necessary repairs. Store the mower in a dry, sheltered place and cover it to protect it from dust and moisture.

How do I replace the spark plug on my McCulloch MM3550SM?

To replace the spark plug, disconnect the spark plug wire and use a spark plug wrench to remove the old plug. Install the new spark plug by hand to avoid cross-threading, then tighten it with the wrench. Reattach the spark plug wire securely.