Stihl Backpack Blower: Replacing The Fuel Filter

If you own a Stihl backpack blower, it's important to know how to change the fuel filter. Fuel filters help to remove dirt and other contaminants from your fuel, and if they become clogged, they can prevent your engine from running properly. In this article, we will guide you through the step-by-step process of changing the fuel filter on your Stihl backpack blower, ensuring a smooth and efficient engine performance.

How to change the fuel filter on a Stihl backpack blower

Locating the fuel filter

The fuel filter will appear as a small, cylindrical object, and its specific location may vary depending on the model of your Stihl backpack blower. On some models, the fuel filter is situated under the fuel tank cap. In other cases, it may be inside the fuel tank, attached to the end of the fuel line.

If your fuel filter is inside the tank, you can use a pair of needle-nose pliers or a similar tool to retrieve it. The filter is weighted, so gravity will help you guide it towards the filler cap opening. Carefully pinch the tube/filter with the pliers and ease it out. Alternatively, a bent clothes hanger can be used as a hook to retrieve the filter.

Once you have located and accessed the fuel filter, you can proceed with the next steps of removing and replacing it.

Removing the old filter

To remove the old fuel filter from your Stihl backpack blower, start by shutting off the engine and removing the backpack blower from your back. This is important for safety reasons and to ensure that you are working with a cool engine.

Next, locate the fuel filter. It will be located near the fuel tank and will look like a small, cylindrical object. You may need to use a pair of needle-nose pliers to reach it, as it is inside the gas tank. The filter is weighted, so gravity will help you get it towards the filler cap opening.

Once you have located the fuel filter, use a pair of pliers to carefully remove it. Be gentle and take care not to damage the fuel line. If the fuel line is brittle or cracked, you may need to replace it.

If you choose to clean the old fuel filter rather than replace it, you can do so if the gas tank is clear of debris. However, it is recommended to replace the fuel filter on your Stihl backpack blower annually to keep the engine running smoothly and efficiently.

Inserting the new filter

To insert the new fuel filter into your Stihl backpack blower, you will need a new fuel filter and a pair of pliers.

First, locate the fuel filter. It will be near the fuel tank and will look like a small, cylindrical object. Next, use your pliers to gently insert the new fuel filter into the fuel line. Ensure that it is seated securely and firmly in place.

Once the new fuel filter is inserted, check for any leaks. If there are no leaks, reattach your Stihl backpack blower, and you're done! The process is simple and should only take a few minutes.

Remember to consult your owner's manual for specific instructions on your Stihl backpack blower model.

Checking for leaks

Once you have replaced the fuel filter on your Stihl backpack blower, it is important to check for leaks.

First, locate the fuel filter. It will be near the fuel tank and will look like a small, cylindrical object. Inspect the area around the fuel filter for any signs of leakage. Look for any wet spots, drips, or puddles of fuel. If you notice any leaks, it could indicate a problem with the fuel filter or the fuel line.

Next, carefully examine the fuel line itself. Check for any cracks, tears, or punctures in the line. Over time, the fuel line can become brittle and prone to leaks. If you notice any damage to the fuel line, it will need to be replaced.

If the fuel filter and fuel line appear intact and undamaged, the next step is to observe the blower's performance. Start the engine and let it run for a few minutes. Pay close attention to the area around the fuel filter and fuel line. If you notice any fuel dripping or leaking during operation, it could indicate a faulty connection or an issue with the fuel delivery system.

Finally, it is important to monitor the blower's performance over time. If you consistently notice a decrease in fuel efficiency or a loss of power, it could be an indication of a slow leak or an issue with the fuel system. In such cases, it is recommended to consult a professional or refer to the owner's manual for further troubleshooting steps.

Remember, working with fuel and power equipment can be dangerous. Always exercise caution and refer to the manufacturer's guidelines for safety instructions and proper maintenance procedures.

Tools required

To change the fuel filter on your Stihl backpack blower, you will need a few tools. These include:

• A new fuel filter: This is the part that needs to be replaced. It is recommended to use a genuine Stihl fuel filter or a high-quality aftermarket one.
• Pliers: Needle-nose pliers or long-nose pliers are ideal for reaching inside the gas tank and grasping the fuel filter securely.
• A screwdriver: A standard or Phillips-head screwdriver may be needed to remove screws holding the fuel filter in place.
• A replacement fuel hose: If your blower is older, the fuel hose may be brittle and need replacing.
• A bent clothes hanger: Alternatively, a bent clothes hanger can be used to hook and remove the fuel filter from the tank.
• A new spark plug: While not directly related to the fuel filter, it is recommended to replace the spark plug during maintenance for optimal performance.
• A spark plug wrench: This tool is used to remove and install the spark plug.
• A wire brush: To clean any carbon deposits from the spark arrestor screen.
• A new air filter: Replacing the air filter is also part of routine maintenance and can improve engine performance.

Frequently asked questions