Stihl MS 250 Instruction Manual

Pages 132

Year 2019

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of 132

Stihl MS 250 Specification

The Stihl MS 250 is a compact yet powerful chainsaw designed for homeowners and landowners who require high performance in a lightweight package. Engineered with precision, it features a single-cylinder, two-stroke engine with a displacement of 45.4 cc, delivering robust power for tackling a variety of cutting tasks. The chainsaw produces a power output of 2.2 kW (3.0 bhp), enabling efficient cutting through medium-sized trees and firewood.

The MS 250 is equipped with a 16 to 18-inch guide bar, providing versatility for different cutting needs while maintaining optimal balance and control. It incorporates an anti-vibration system that significantly reduces user fatigue by dampening engine vibrations, ensuring more comfortable and prolonged usage. A side-access chain tensioner allows for easy adjustments, enhancing user convenience during maintenance.

Fuel efficiency is a notable feature, with a fuel tank capacity of 470 cc and an oil tank capacity of 200 cc, optimizing runtime between refueling and lubrication intervals. The advanced carburetor preheating system enables reliable starts in various weather conditions, a critical aspect for users in changing climates.

Safety features include a quick-stop chain brake that halts the chain’s motion during kickback, reducing the risk of accidents. The ergonomic design, featuring an easy-to-grip handle, ensures precise control and maneuverability. Weighing approximately 10.1 lbs (excluding cutting equipment), the Stihl MS 250 is lightweight, enhancing portability without compromising performance.

Overall, the Stihl MS 250 combines power, efficiency, and user-friendly operation, making it an ideal choice for those who require a reliable chainsaw for regular use around the home or property.

Stihl MS 250 F.A.Q.

How do I properly start my Stihl MS 250 chainsaw?

To start your Stihl MS 250, first engage the chain brake. Set the master control lever to the cold start position. Pull the starter rope until the engine fires briefly. Move the master control to the warm start position and pull again until the engine starts.

What is the recommended maintenance schedule for the Stihl MS 250?

It is recommended to clean or replace the air filter after every 10 hours of operation, inspect the chain and guide bar after every use, and check the spark plug every 100 hours, replacing it if necessary.

How can I troubleshoot if my Stihl MS 250 won't start?

Check the fuel mix to ensure it's fresh and correct. Inspect the spark plug for fouling or wear, and clean or replace it if needed. Make sure the air filter is clean and the carburetor is properly adjusted.

What type of fuel should I use for my Stihl MS 250?

Use a 50:1 ratio of gasoline to 2-stroke engine oil. Ensure the gasoline is at least 89 octane and the oil is a high-quality, 2-cycle engine oil.

How do I replace the chain on my Stihl MS 250?

First, remove the bar nuts and the sprocket cover. Take off the old chain and guide bar. Fit the new chain onto the guide bar, ensuring the cutting edges are facing forward. Reattach the guide bar and sprocket cover, and adjust the chain tension.

What should I do if the chain on my Stihl MS 250 is not cutting properly?

Check the chain for sharpness and sharpen or replace it if necessary. Ensure the chain tension is correct and that the guide bar is not worn or damaged.

How can I prevent my Stihl MS 250 from overheating?

Ensure the air vents are clean and unobstructed. Use the correct fuel mixture and avoid running the saw at full throttle for extended periods. Regularly clean the cooling fins on the cylinder.

What is the proper way to store my Stihl MS 250 for an extended period?

To store your MS 250, empty the fuel tank and run the engine until it stops. Remove the chain and guide bar, clean them, and store them separately. Keep the saw in a dry, dust-free environment.

How do I adjust the carburetor on my Stihl MS 250?

The carburetor has three screws: L (low speed), H (high speed), and LA (idle speed). Adjust the L screw for acceleration and smooth idling, the H screw for top speed, and the LA screw to set the idle speed. Consult the manual for specific settings.

What should I check if my Stihl MS 250 is vibrating excessively?

Inspect the chain tension and ensure the guide bar is secure. Check for any loose components or parts. Examine the anti-vibration mounts for wear or damage.