Stihl MS 290 MS 310 MS 390 Instruction Manual

Pages 126

Year 2007

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of 126

Stihl MS 290 MS 310 MS 390 Specification

The Stihl MS 290, MS 310, and MS 390 are part of Stihl's robust line of mid-range chainsaws designed for demanding cutting tasks. Each model is powered by a single-cylinder, two-stroke engine delivering reliable performance for various applications, from cutting firewood to felling trees.

The MS 290, also known as the Farm Boss, features a 56.5 cc engine with an output of 3.8 horsepower. It is engineered for durability and ease of use, equipped with an anti-vibration system to enhance operator comfort during extended use. The chainsaw incorporates a side-access chain tensioner, allowing for quick adjustments, and a toolless fuel and oil cap for easy refueling.

The MS 310 offers a slight upgrade with a 59 cc engine generating 4 horsepower. It shares many of the ergonomic features of the MS 290, making it a versatile choice for users requiring more power without compromising on handling. The chainsaw is constructed with a pre-separation air filtration system that extends the life of the air filter, reducing maintenance needs.

At the higher end, the MS 390 is powered by a 64.1 cc engine with an output of 4.4 horsepower, providing the most power among the three models. It is ideal for heavy-duty tasks requiring significant cutting power. The MS 390 maintains the ergonomic and maintenance-friendly design features found in its counterparts while offering superior performance for more challenging jobs.

All three models are crafted with high-quality components, ensuring reliability and longevity. They are designed to meet the needs of both professional and demanding home users, providing a balance of power, efficiency, and user-friendly operation.

Stihl MS 290 MS 310 MS 390 F.A.Q.

How do I properly mix fuel for the Stihl MS 290, MS 310, and MS 390 chainsaws?

To mix fuel for these chainsaws, use a 50:1 ratio of gasoline to 2-stroke engine oil. This means 2.6 ounces of oil per gallon of gasoline. Always use fresh, high-quality fuel and oil specifically designed for 2-stroke engines.

What is the correct procedure to start the Stihl MS 290 chainsaw?

To start the MS 290, ensure the chain brake is engaged, place the saw on the ground, switch the ignition to 'On', set the choke, and pull the starter cord until the engine fires. Once it fires, move the choke to the run position and pull again to start.

How can I troubleshoot a Stihl MS 310 that won't start?

If the MS 310 won't start, check the fuel for freshness, inspect the spark plug for damage or fouling, ensure the air filter is clean, and verify that the carburetor is properly adjusted.

What maintenance steps should I perform regularly on my Stihl MS 390?

Regular maintenance for the MS 390 includes cleaning or replacing the air filter, inspecting and cleaning the spark plug, sharpening the chain, checking the chain tension, and inspecting the guide bar for wear.

How do I adjust the chain tension on a Stihl MS 290?

To adjust the chain tension, loosen the bar nuts, turn the tensioning screw to adjust the chain tension until it fits snugly against the bar but can still be moved by hand, and then retighten the bar nuts.

Why is the chain on my Stihl MS 310 not cutting properly?

If the chain is not cutting properly, it may be dull. Sharpen the chain using a file or a chainsaw sharpener. Make sure the chain is properly tensioned and the depth gauges are set correctly.

What type of oil should I use for the bar and chain on my Stihl MS 390?

Use high-quality bar and chain oil to lubricate the bar and chain of your MS 390. This oil is specifically formulated to adhere to the chain and provide lubrication during operation.

How can I clean the air filter on my Stihl MS 290?

To clean the air filter, remove it from the chainsaw, gently tap it to remove loose dirt, and wash it in warm, soapy water. Rinse thoroughly, allow it to dry completely, and then reinstall it.

What should I do if my Stihl MS 310 is overheating?

If the MS 310 is overheating, ensure proper ventilation by cleaning any debris from the air intake and cooling fins. Check the fuel mixture for accuracy and ensure the carburetor is correctly adjusted.

How do I store my Stihl MS 390 for the off-season?

To store the MS 390, empty the fuel tank and run the engine until it stops. Clean the chainsaw thoroughly, remove the chain and bar, and store them separately. Keep the chainsaw in a dry, dust-free environment.