Stihl MS 170 MS 180 Instruction Manual

Pages 136

Year 2020

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Stihl MS 170 MS 180 Specification

The Stihl MS 170 and MS 180 are compact chainsaws designed for light residential use, offering robust performance and reliability. Both models are powered by a 2-stroke engine, with the MS 170 featuring a 30.1 cc engine and the MS 180 slightly larger at 31.8 cc. These chainsaws deliver power outputs of 1.3 kW and 1.5 kW respectively, making them suitable for tasks such as cutting firewood and small tree maintenance. They are equipped with Stihl's anti-vibration system to reduce fatigue, enhancing user comfort during extended use.

The MS 170 and MS 180 are both fitted with a 16-inch guide bar, providing ample cutting length for most home tasks. They feature an automatic chain lubrication system that ensures consistent performance and prolongs the life of the chain and bar. The side-access chain tensioner allows for simple adjustments, ensuring optimal chain tension is maintained with minimal effort. Both models incorporate a single-lever master control, simplifying startup and operation by integrating choke, start, throttle, and stop functions into one lever.

Fuel efficiency is enhanced by a manual fuel pump primer, reducing the number of starting pulls required after long periods of inactivity. The MS 170 and MS 180 are equipped with a translucent fuel tank, allowing users to easily monitor fuel levels. The compact and ergonomic design of these chainsaws makes them easy to handle and maneuver, while their lightweight construction reduces operator fatigue. These chainsaws also feature an inertia-activated chain brake for added safety, stopping the chain in the event of a kickback. Overall, the Stihl MS 170 and MS 180 are well-suited for homeowners seeking reliable and efficient tools for basic outdoor cutting tasks.

Stihl MS 170 MS 180 F.A.Q.

How do I start a Stihl MS 170 chainsaw?

To start a Stihl MS 170 chainsaw, 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 lever to the warm start position, then pull the starter rope again until the engine starts.

What type of fuel mixture should I use for a Stihl MS 180?

The Stihl MS 180 chainsaw requires a 50:1 fuel mixture ratio, which means 50 parts gasoline to 1 part 2-stroke engine oil. Use high-quality 89 octane unleaded gasoline and Stihl 2-stroke engine oil for optimal performance.

Why won't my Stihl MS 170 chainsaw start?

If your Stihl MS 170 chainsaw won't start, check the fuel level and ensure the fuel is fresh. Inspect the spark plug for wear or damage, and replace if necessary. Make sure the air filter is clean and the carburetor is not clogged.

How do I replace the chain on a Stihl MS 180 chainsaw?

To replace the chain, first ensure the chainsaw is off and the chain brake is engaged. Remove the sprocket cover, loosen the chain tensioner, and remove the old chain. Place the new chain on the bar, ensuring correct direction, adjust the tension, and replace the sprocket cover.

What maintenance is required for the air filter on a Stihl MS 170?

Regularly check the air filter for dust and debris. Clean the filter by gently tapping it or washing it in warm, soapy water. Allow it to dry completely before reinstalling. Replace the air filter if it is damaged or excessively dirty.

How do I adjust the carburetor on a Stihl MS 180?

To adjust the carburetor, locate the three adjustment screws marked L (low), H (high), and LA (idle speed). Adjust the L and H screws to fine-tune the fuel mixture, and use the LA screw to adjust the idle speed, ensuring the chain does not move at idle.

What is the correct way to sharpen the chain on a Stihl MS 170?

To sharpen the chain, use a round file that matches the chain's pitch. File each cutter at a consistent angle, using the file guide for accuracy. File each tooth evenly, and maintain the depth gauges with a flat file.

How often should I clean the bar and chain of my Stihl MS 180?

Clean the bar and chain after each use to remove sawdust, sap, and debris. Regular cleaning prevents buildup and ensures smooth operation. Inspect for wear or damage during cleaning and sharpen the chain as needed.

Why is my Stihl MS 170 chainsaw chain not turning?

If the chain is not turning, check if the chain brake is engaged. Ensure the chain tension is not too tight and the clutch and sprocket are functioning properly. Inspect for obstructions in the bar groove or chain track.

How do I store my Stihl MS 180 chainsaw for an extended period?

To store the chainsaw long-term, drain the fuel tank and run the engine until it stops to clear the carburetor. Clean the chainsaw thoroughly, including the bar and chain. Store in a dry place, and protect the chain with a bar cover.