Stihl HT 73 Instruction Manual

Stihl HT 73 manual cover
Pages 86
Year 2002
Language(s)
English en
Spanish sp

Stihl HT 73 Specification

The Stihl HT 73 is a professional-grade pole pruner designed for efficient and precise tree maintenance. Equipped with a robust 30.1 cc, 2-stroke engine, this tool delivers a powerful performance while ensuring fuel efficiency and reduced emissions, complying with stringent environmental standards. Its engine is engineered with advanced technology to offer consistent power output, making it suitable for demanding tasks.

The HT 73 features an extendable telescopic shaft, providing a reach of up to 12 feet, allowing operators to trim high branches safely without the need for ladders. The shaft is crafted from lightweight yet durable materials, ensuring ease of handling and maneuverability during prolonged use. The pruner's cutting attachment is designed with a precision-ground chain and guide bar, facilitating clean cuts and minimizing damage to trees.

For enhanced user comfort, the HT 73 is equipped with an anti-vibration system that significantly reduces operator fatigue, even during extended periods of operation. The ergonomic grip design further contributes to user comfort by providing a secure and comfortable hold. Maintenance is straightforward with easy access to the air filter and spark plug, ensuring the tool remains in optimal working condition with minimal downtime.

Safety features include a chain brake system that halts the chain immediately upon release of the throttle, reducing the risk of accidents. The tool's intuitive design includes an automatic oiling system to maintain chain lubrication, enhancing cutting performance and prolonging the life of the chain and bar. Overall, the Stihl HT 73 is a reliable and efficient tool for professional arborists and landscapers seeking precision and power in tree maintenance tasks.

Stihl HT 73 F.A.Q.

What is the recommended fuel mixture for the Stihl HT 73?

The Stihl HT 73 requires a 50:1 fuel mixture, which means 50 parts gasoline to 1 part 2-stroke engine oil. Use high-quality 2-stroke oil and unleaded gasoline with a minimum octane rating of 89.

How can I clean the air filter on my Stihl HT 73?

To clean the air filter, remove the cover and gently tap the filter against a clean surface to remove loose dirt. If necessary, wash the filter in warm soapy water, rinse, and let it dry completely before reinstalling.

What should I do if the Stihl HT 73 won't start?

If the HT 73 won't start, check the fuel level and ensure the fuel mixture is correct. Inspect the spark plug for damage or wear and replace if necessary. Also, verify that the air filter is clean and that the choke is set properly.

How often should I sharpen the chain on my Stihl HT 73?

The frequency of chain sharpening depends on usage, but it's generally recommended to sharpen the chain whenever it becomes dull or after every few hours of use. Using a proper round file, maintain the correct angle and file depth.

What is the procedure for tensioning the chain on the Stihl HT 73?

To tension the chain, first loosen the nuts on the sprocket cover. Adjust the tensioning screw until the chain fits snugly against the bar but can still be pulled around by hand. Tighten the sprocket cover nuts securely after adjustment.

Can I use any type of bar and chain oil in the Stihl HT 73?

It is recommended to use Stihl bar and chain oil for optimal performance and protection. If unavailable, use high-quality bar and chain oil with similar viscosity and additive properties.

How do I replace the spark plug on my Stihl HT 73?

To replace the spark plug, first disconnect the spark plug boot. Use a spark plug wrench to remove the old plug. Check the gap on the new plug, install it by hand to avoid cross-threading, and then tighten it with the wrench. Reattach the spark plug boot.

What is the correct storage procedure for the Stihl HT 73 during off-season?

For off-season storage, clean the HT 73 thoroughly and drain the fuel tank. Run the engine until it stops to clear the carburetor. Remove the chain and bar, clean, and store them separately. Store the unit in a dry, sheltered area.

How can I troubleshoot excessive vibration in my Stihl HT 73?

Excessive vibration may be caused by an improperly tensioned chain, worn or damaged guide bar, or unbalanced cutting attachment. Check and adjust the chain tension, inspect the guide bar for wear, and ensure all screws and bolts are tightened.

What maintenance should be performed regularly on the Stihl HT 73?

Regular maintenance includes checking and cleaning the air filter, inspecting the spark plug, adjusting the chain tension, lubricating the chain, and cleaning the cooling fins. Follow the user manual for specific intervals and procedures.