4.1 Unpacking and Inventory

When unpacking your Stihl MS 170, ensure all components are included: chainsaw, guide bar, chain, protective bar, and manual. Verify each part for damage or wear. Check for any missing items, as proper assembly requires all components to be present and in good condition. This step ensures readiness for safe and efficient operation.

4.2 Attaching the Guide Bar and Chain

Align the guide bar with the chainsaw’s mounting holes and secure it using the provided screws. Ensure the chain is correctly looped around the sprocket and guide bar. Tighten the chain tensioning screw until the chain sits snugly, then tighten the bar nuts firmly. Always refer to the manual for proper alignment and torque specifications to ensure safe and efficient operation.

Operating Instructions

Always follow the manual’s starting procedure, engaging the chain brake before pulling the starter cord. Maintain a firm grip, apply steady pressure, and ensure the chain is sharp. For cutting, hold the saw at a 90-degree angle, using controlled, smooth strokes. Shutdown involves stopping the engine and allowing it to cool before storage, ensuring safety and longevity of the tool.

5.1 Starting the Chainsaw

Ensure the chain brake is engaged. Prime the engine by pressing the primer bulb 4-6 times. Set the choke to the “start” position. Pull the starter cord firmly until the engine coughs. Move the choke to “run” and pull the cord again until the saw starts. Allow the engine to warm up before use. Always follow the manual’s starting procedure for optimal performance and safety.

5.2 Basic Cutting Techniques

Start with proper stance, feet shoulder-width apart, and grip the saw firmly. Align the guide bar with the cutting direction. Use gentle, controlled pressure, letting the chain do the work. Avoid applying too much force, which can cause loss of control. Maintain steady movement and keep the chain sharp for efficient cutting. Always follow safety guidelines and manual instructions for optimal results and safety.

5.3 Shutdown and Storage Procedures

After completing your tasks, allow the engine to cool before turning it off. Engage the chain brake and ensure the chain stops moving. Store the saw in a dry, secure location, away from direct sunlight and flammable materials. Clean the saw thoroughly, removing any debris, and check for wear. Store with the bar and chain protected, following all safety guidelines to prevent accidents or damage.

Maintenance and Servicing

Regular maintenance ensures optimal performance and longevity of the Stihl MS 170. This includes chain sharpening, tensioning, cleaning or replacing filters, and using recommended oil and fuel.

6.1 Chain Sharpening and Tensioning

Proper chain sharpening and tensioning are essential for the Stihl MS 170’s performance. Use a genuine Stihl sharpening kit to maintain the chain’s cutting efficiency. Check tension regularly to ensure optimal cutting performance and safety. Adjust the tension as per the manual’s guidelines to avoid over-tightening, which can damage the bar or chain. Always refer to the user manual for precise instructions.

6.2 Cleaning and Replacing Filters

Regular cleaning and replacement of air and fuel filters are crucial for maintaining the Stihl MS 170’s performance. Use compressed air to clean the air filter, and replace it as recommended in the manual. Fuel filters should be replaced every 3 months or sooner if contaminated. Always use genuine Stihl parts for optimal functionality. Proper maintenance ensures efficient engine operation and extends the chainsaw’s lifespan.

6.3 Oil and Fuel Requirements

The Stihl MS 170 requires high-quality, unleaded gasoline with an octane rating of at least 89 and a maximum ethanol content of 10%. Use Stihl HP Ultra or equivalent synthetic oil, mixing at a ratio of 1:50. Ensure the fuel is fresh and stored properly to prevent engine issues. Using the correct oil and fuel ensures optimal performance, reduces emissions, and extends the chainsaw’s lifespan while maintaining environmental standards.

Troubleshooting Common Issues

Common issues with the Stihl MS 170 include engine not starting, poor cutting performance, and excessive vibration. Refer to the manual for diagnostic steps and solutions.

7.1 Engine Not Starting

If the engine fails to start, check the fuel and oil mixture, ensuring it matches the manual’s specifications. Verify the air filter is clean and the spark plug is in good condition. Ensure the muffler is free from debris and the chain brake is disengaged. Consult the manual for detailed diagnostic steps to address ignition or fuel system issues effectively.

7.2 Chain Not Cutting Properly

If the chain isn’t cutting effectively, check for proper tension and sharpness. A dull or loose chain reduces cutting efficiency. Ensure the correct chain type is used for the task. Clean the guide bar and chain from debris, as obstructions can hinder performance. Refer to the manual for sharpening and tensioning guidelines to restore optimal cutting functionality and safety.

7.3 Excessive Vibration

Excessive vibration can occur due to improper chain tension, a dull chain, or misaligned guide bars. Check the chain for wear and ensure it’s properly sharpened and tensioned. Inspect the guide bar for damage or debris. If issues persist, consult the manual or a certified technician to address potential mechanical faults and restore smooth operation.

Repair and Replacement Parts

For repairs, identify worn or damaged components and replace them with genuine Stihl parts. Use authorized dealers to ensure compatibility and maintain performance and safety standards.