Stihl HT 250 Instruction Manual

Pages 100

Year 2020

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Stihl HT 250 Specification

The Stihl HT 250 is a professional-grade pole pruner designed for efficient and precise tree maintenance. This model features a robust 36.3 cc 2-stroke engine, delivering impressive power for cutting tasks while maintaining fuel efficiency. The HT 250 is equipped with a 12-inch guide bar and a PMM3 saw chain, optimized for smooth, clean cuts. The overall design focuses on user comfort and safety, incorporating an anti-vibration system that reduces operator fatigue during extended use. The ergonomic grip and adjustable telescoping shaft provide flexibility and ease of handling, allowing users to reach branches up to 16 feet high. A key feature is the automatic chain lubrication system, which ensures optimal performance and longevity by providing consistent oil flow to the cutting chain. This pruner also includes a side-access chain tensioner, facilitating quick and easy adjustments to maintain optimal chain tension. The Stihl HT 250 is designed with a focus on durability, featuring high-quality materials that withstand tough conditions and prolonged usage. Its intuitive controls and lightweight construction further enhance its usability, making it a preferred choice for arborists and landscape professionals. With a focus on performance, safety, and ease of use, the Stihl HT 250 pole pruner is engineered to meet the demands of rigorous tree pruning tasks.

Stihl HT 250 F.A.Q.

How do I start the Stihl HT 250 pole pruner?

To start the Stihl HT 250, set it on a flat surface, switch the ignition to 'on', set the choke lever to 'cold start', pull the starter rope until the engine fires, then move the choke to 'run'. Pull the starter rope again until the engine starts.

What is the correct fuel mixture for the Stihl HT 250?

Use a 50:1 ratio of gasoline to 2-cycle engine oil for the Stihl HT 250. Ensure the gasoline is unleaded and has an octane rating of 89 or higher.

How can I troubleshoot the engine not starting?

Check the spark plug for fouling, ensure the fuel is fresh, verify that the air filter is clean, and confirm the choke lever is in the correct position.

How often should I clean the air filter?

Clean the air filter after every 10 hours of operation or more frequently if operating in dusty conditions. Replace it if it is damaged or excessively dirty.

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

Perform a visual inspection before each use, clean air filters every 10 hours, replace spark plugs annually, and have the carburetor adjusted by a professional as needed.

How do I sharpen the cutting chain on the Stihl HT 250?

Use a round file that matches the chain's specifications. Sharpen each cutter by filing from the inside to the outside edge, maintaining the correct angle. Always file all cutters to the same length.

What should I do if the chain is not lubricating properly?

Check the oil reservoir to ensure it's filled. Inspect the oil pump and oil delivery system for blockages or damage. Clean the oil passages and replace any damaged parts.

How can I reduce vibration while using the Stihl HT 250?

Ensure all anti-vibration components are intact and secure. Maintain a firm grip but do not hold the pruner too tightly. Regularly check that the chain is sharp and properly tensioned.

What should I do if the pole pruner is overheating?

Allow the engine to cool, check for obstructions in the cooling fins, ensure the air filter is clean, and verify that the fuel mixture is correct.

How do I store the Stihl HT 250 for long periods?

Empty the fuel tank and run the engine until it stops. Clean the pole pruner thoroughly, remove the chain and guide bar, and store them in a dry place. Apply a light coat of oil to prevent rust.