Stihl KM 55 R Instruction Manual

Pages 68

Year 2011

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of 68

Stihl KM 55 R Specification

The Stihl KM 55 R is a versatile and robust power unit designed for the KombiSystem, offering a flexible solution for a variety of landscaping tasks. It features a dependable 27.2 cc two-stroke engine that delivers ample power while maintaining fuel efficiency, making it suitable for both residential and light professional use. The engine is equipped with Stihl's Easy2Start technology, significantly reducing the effort needed to start the unit, which enhances user convenience and reduces fatigue.

An ergonomic loop handle provides comfortable operation and better maneuverability, allowing users to work in confined spaces or around obstacles with ease. The KM 55 R is compatible with a wide range of KombiSystem attachments, including trimmers, edgers, and blowers, which can be easily interchanged thanks to its quick-release coupling system. This adaptability makes it a cost-effective choice for users who need multiple tools but prefer a single power source.

The unit is designed with a lightweight construction, weighing just 4.3 kg (9.5 lbs), which minimizes operator strain during extended use. Its compact design also facilitates easier storage and transport. The fuel tank has a capacity of 330 ml (11.2 oz), allowing for reasonable run times before refueling is necessary. The KM 55 R meets stringent emission standards, underscoring Stihl's commitment to environmentally responsible manufacturing. This combination of power, versatility, and user-friendly features makes the Stihl KM 55 R an ideal choice for those seeking a reliable and efficient multi-tasking tool for various landscaping applications.

Stihl KM 55 R F.A.Q.

How do I start the Stihl KM 55 R engine?

To start the Stihl KM 55 R, ensure the machine is on a flat surface. Set the control lever to the start position, engage the choke if the engine is cold, and pull the starter rope until the engine fires. Release the choke once the engine is running smoothly.

What type of fuel mix should I use for the Stihl KM 55 R?

The Stihl KM 55 R requires a 50:1 fuel mix ratio of unleaded gasoline to high-quality 2-stroke engine oil. Always use fresh fuel and mix in small quantities to ensure optimal performance.

How can I troubleshoot if the engine won't start?

Check the fuel level and ensure the fuel is fresh. Inspect the spark plug for wear or fouling, and replace if necessary. Verify that the air filter is clean and the carburetor is properly adjusted.

What maintenance tasks should be performed regularly on the KM 55 R?

Regular maintenance includes cleaning or replacing the air filter, checking the spark plug, inspecting the fuel system, and lubricating moving parts. It's also important to check and tighten any loose screws or bolts.

Why is my Stihl KM 55 R engine losing power during operation?

An engine losing power may be due to a clogged air filter, a dirty fuel filter, or a fouled spark plug. Ensure these components are clean and replace them if needed. Also, check for carburetor issues or exhaust blockages.

How do I adjust the carburetor on the Stihl KM 55 R?

To adjust the carburetor, locate the L (low speed) and H (high speed) screws. Turn them gently to fine-tune the engine's performance. It is recommended to refer to the user manual or consult a professional for precise adjustments.

What attachments are compatible with the Stihl KM 55 R?

The Stihl KM 55 R is compatible with various KombiSystem attachments, including a trimmer, blower, edger, cultivator, and hedge trimmer. Ensure each attachment is properly secured before use.

How do I clean the air filter on my KM 55 R?

To clean the air filter, remove the cover and take out the filter. Wash it in warm, soapy water, rinse thoroughly, and let it dry completely before reinstallation. Replace if it shows signs of damage or wear.

What should I do if the KM 55 R vibrates excessively?

Excessive vibration may be caused by an unbalanced attachment, loose parts, or worn-out components. Check and tighten all connections and inspect the attachment for damage. Replace any worn parts as needed.

How can I store my Stihl KM 55 R for an extended period?

For long-term storage, empty the fuel tank and run the engine until it stops to clear the carburetor. Clean the machine thoroughly and store it in a dry, secure location away from direct sunlight or extreme temperatures.