Stihl MS 261 C-M Instruction Manual

Pages 132

Year 2020

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Stihl MS 261 C-M Specification

The Stihl MS 261 C-M is a professional-grade chainsaw designed for forestry and landscaping tasks, incorporating advanced technology for enhanced performance and user convenience. At the core of its functionality is the 50.2 cc (3.06 cu. in.) engine that delivers a robust output of 2.8 kW (3.8 bhp), ensuring efficient cutting power for demanding jobs. The chainsaw features the Stihl M-Tronic (M) system, an intelligent engine management technology that automatically adjusts the fuel mix for optimal performance under varying conditions, eliminating the need for manual carburetor adjustments.

Weighing approximately 4.9 kg (10.8 lbs) without fuel, the MS 261 C-M is engineered for ease of handling and reduced operator fatigue during extended use. Its design incorporates an anti-vibration system that minimizes vibrations transmitted to the user's hands, enhancing comfort and control. The chainsaw is equipped with a side-access chain tensioner, facilitating quick and easy chain adjustments without the need for special tools.

Additionally, the Ematic lubrication system ensures efficient oil delivery to the chain and guide bar, reducing oil consumption while maximizing lubrication efficiency. This model also features a long-life air filtration system with pre-separation, extending the time between filter cleanings and promoting longer engine life. The MS 261 C-M is compatible with guide bar lengths ranging from 16 to 20 inches, offering versatility for various cutting tasks. Its ergonomic design, combined with the advanced technological features, makes the Stihl MS 261 C-M a reliable choice for professionals seeking performance, durability, and ease of use in a chainsaw.

Stihl MS 261 C-M F.A.Q.

How do I properly start the Stihl MS 261 C-M chainsaw?

To start the Stihl MS 261 C-M, ensure the chain brake is engaged, place the saw on a flat surface, switch the master control lever to the choke position, pull the starter rope until the engine fires briefly, then move the control lever to the run position and pull the starter rope again until the engine starts.

What should I do if my Stihl MS 261 C-M won't start?

Check the fuel level, ensure the spark plug is clean and properly gapped, inspect the air filter for clogs, and verify that the chain brake is disengaged. If problems persist, consider consulting a Stihl technician.

How often should I clean the air filter on my Stihl MS 261 C-M?

It's recommended to clean the air filter after every 10 hours of operation or more frequently if operating in dusty conditions.

What type of fuel should I use for the Stihl MS 261 C-M?

Use a high-quality 2-stroke engine oil mixed at a ratio of 50:1 with unleaded gasoline that has an octane rating of at least 89.

How can I adjust the carburetor on the Stihl MS 261 C-M?

The MS 261 C-M features the M-Tronic system, which automatically adjusts the carburetor settings. If you suspect issues, ensure the air filter is clean and the fuel is fresh. For manual adjustments, consult a professional.

Why is my Stihl MS 261 C-M chainsaw overheating?

Check for a clogged air filter or cooling fins, ensure the fuel mixture is correct, and make sure the chain is properly lubricated. Overheating can also be caused by prolonged use without breaks.

What is the correct way to maintain the chain tension on the Stihl MS 261 C-M?

Ensure the chain is tensioned so that it can be pulled away from the bar slightly but snaps back into place. Adjust the tension when the chain is cool, and recheck it after a few minutes of operation.

How do I troubleshoot a Stihl MS 261 C-M that stalls under load?

Check the air filter and fuel filter for blockages, ensure the spark plug is in good condition, and verify that the carburetor settings are correct. It may also be necessary to inspect the exhaust for any blockages.

What safety gear should I wear when operating the Stihl MS 261 C-M?

Wear protective gear including a helmet with face shield, ear protection, gloves, chainsaw chaps, and sturdy boots. Ensure that clothing is snug to prevent snagging.

How do I store my Stihl MS 261 C-M for an extended period?

Drain the fuel tank and run the engine until it stops to clear the carburetor. Clean the saw thoroughly, remove the chain and bar, and store them separately. Store the chainsaw in a dry, clean place.