Replacing The Fuel Line On A Stihl 029: Step-By-Step Guide

If you're looking to change the fuel line on your Stihl 029 chainsaw, you've come to the right place. Over time, the fuel line can deteriorate due to exposure to ethanol, dry rot, and gasoline. Additionally, the fuel filter can become clogged with dirt, sawdust, and stale varnished fuel, leading to sluggish performance. It is important to replace the fuel line and filter regularly to ensure optimal performance and avoid internal engine failure.

The process of changing the fuel line involves removing the air filter cover, air filter, and throttle linkage. You will also need to remove the carburetor and use long-nosed needle-nose pliers to grab the fuel line just below where it comes through the top of the fuel tank. A new hose can then be installed, and you should apply a small amount of premix to the bottom of the fuel hose flange before inserting the filter end from the top of the tank.

For a more detailed, step-by-step guide, it is recommended to refer to specific Stihl 029 resources or seek advice from a certified technician.

Drain fuel and remove fuel filter

To drain the fuel and remove the fuel filter from your Stihl 029 chainsaw, follow these steps:

First, remove the gas tank cap. Then, take out the fuel line and remove the fuel filter. You can do this by reaching into the tank with a piece of wire with a small hook at the end. Once you've caught the fuel filter, slowly pull it out of the tank. It's important to clean the filter with clean gasoline before proceeding.

Next, remove the fuel line from the gas tank. You'll need to cut off the piece of the fuel line that is larger and seals the gas tank. Now, take an ordinary fuel line, one that is about the same diameter, and put it through that piece. Finally, put everything back together, and you're done!

This process should only take around 10-15 minutes to complete.

Remove air filter cover and air filter

To remove the air filter cover and air filter from your Stihl 029 chainsaw, you will need to first drain the fuel. Then, remove the air filter cover, air filter, and throttle linkage. To do this, depress the throttle slightly until you can see the top of the trigger, then pop or pry up the linkage out of the trigger groove using a small screwdriver.

Next, you will need to remove the carburetor. Insert long-nosed needle-nose pliers through the fuel fill hole and grab the fuel line just below where it comes through the top of the fuel tank. Using the screwdriver end of a scrench, push on the flange/grommet on the fuel hose into the tank and pull down and out at the same time with pliers or hemostats.

Once the carburetor is removed, you can access and remove the air filter and its cover. This process should take around 10-15 minutes to complete.

Remove throttle linkage

To remove the throttle linkage on a Stihl 029 chainsaw, follow these steps:

Firstly, remove the air filter cover and air filter. Next, depress the throttle until you can see the top of the trigger. Use a small screwdriver to pop or pry the throttle linkage out of the trigger groove. Now, remove the carburetor.

At this point, you can access the fuel line. Using long-nose needle-nose pliers, grab the fuel line just below where it comes through the top of the fuel tank. Using the screwdriver end of a scrench, push on the flange/grommet on the fuel hose into the tank and pull down and out at the same time with pliers.

When installing the new hose, apply a little pre-mix to the bottom of the fuel hose flange/grommet inner lip. Insert the filter end from the top of the tank, ensuring that the hose bulkhead flange is aimed with the flat side towards the filler hole of the tank.

To reassemble, simply reverse the steps. Start by installing the carburettor, then the throttle linkage. Roll the hook into the carburettor first, then give the carburettor a little throttle with the linkage. Depress the trigger a bit to line up the linkage to the groove in the top of the trigger, then pop/press the linkage back into the trigger with the edge of a screwdriver.

Check for proper operation, then install the air filter and fuel filter, and finally the cover.

Remove carburetor

To remove the carburetor from your Stihl 029 chainsaw, you will first need to drain the fuel and remove the fuel filter. Next, take off the air filter cover and the air filter itself. Then, remove the throttle linkage by depressing the throttle until you see the top of the trigger, then pop/pry it up and remove the linkage from the trigger groove with a small screwdriver.

Now you can remove the carburetor. Using long-nosed needle-nose pliers, grab the fuel line just below where it comes through the top of the fuel tank. Using the screwdriver end of a scrench, push on the flange/grommet on the fuel hose into the tank and pull down and out at the same time with pliers or hemostats/forceps.

Pull out fuel line using pliers or hemostats

To pull out the fuel line, you will need a pair of pliers or hemostats. You will also need a screwdriver.

Begin by draining the fuel and removing the fuel filter. Next, remove the air filter cover and the air filter itself. Then, remove the throttle linkage by depressing the throttle until you see the top of the trigger. Pop or pry the throttle linkage out of the trigger groove with a small screwdriver.

Now, insert your pliers or hemostats through the fuel fill hole and grab the fuel line just below where it comes through the top of the fuel tank. Using the screwdriver end of a scrench, push on the flange/grommet on the fuel hose into the tank. At the same time, pull down and out with the pliers or hemostats.

When installing the new hose, apply a little premix to the bottom of the fuel hose flange/grommet inner lip. Insert the filter end from the top of the tank, noting that the hose bulkhead flange will have a flat side. Aim the flat side toward the filler hole of the tank. With the hose positioned properly, insert the needle-nose pliers (hemostats/forceps) through the fill opening again, grabbing the hose near the top of the tank. Keep steady, slight pressure on the hose, pulling it into the tank. Gently push with the scrench on the flange/grommet (you may need to walk around the flange a bit as you go, maintaining slight pressure from the pliers/hemostats). Use the tank top as a fulcrum to pull the hose into the groove in the fuel line flange.

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