Replacing Tecumseh Tvxl220 Fuel Line: A Step-By-Step Guide

The Tecumseh TVXL220 is a 10 hp vertical shaft engine that is commonly found on lawn tractors and mowers. Replacing the fuel line on this engine is a straightforward process that can be done at home with relative ease. This is especially true when compared to other engines, where the fuel line can often be pulled out from behind the flywheel. However, for the TVXL220, it may be necessary to disassemble parts of the engine to access and replace the fuel line.

Carburetor identification

Carburetors are devices that mix air and fuel for an engine. They are usually located close to the engine, with the air filter on one side and the engine on the other.

To identify the carburetor on your Tecumseh TVXL220 engine, you can refer to the engine's manual or seek guidance from an authorized Tecumseh dealer. The manual will provide detailed information about the carburetor, including its location, specifications, and any relevant part numbers.

Additionally, when identifying the carburetor, it is essential to distinguish between different types of carburetors used in Tecumseh engines. The Tecumseh TVXL220 engine typically uses a float-style carburetor or a diaphragm (pressure differential) carburetor. These carburetor types can be further classified into various series, such as Series 1, Series 3, Series 4, and Series 6.

Moreover, it is worth noting that Tecumseh carburetors are specific to the spec number of the model. Therefore, when identifying the carburetor for your TVXL220 engine, ensure that you have the correct spec and model information. This information can be found in the engine's manual or by contacting Tecumseh support with the model, spec, and serial numbers of your engine.

By following these steps and referring to the appropriate resources, you should be able to successfully identify the carburetor on your Tecumseh TVXL220 engine.

Disassembling the front cover

To replace the fuel line on a Tecumseh TVXL220 engine, disassembling the front cover is necessary. Here is a step-by-step guide on how to do it:

• Start by removing the engine shroud. This will give you easier access to the fuel line and other components.
• Next, you will need to remove the starter and the recoil shroud. These parts are attached with bolts, so have the appropriate tools ready.
• With the starter and shroud out of the way, you will have more room to work on the fuel line. However, it is important to note that the bolts holding the front cover also hold the head in place, so proceed with caution.
• Before removing the front cover, make sure to refer to the torque spec chart for your specific engine model. This will ensure that you do not overtighten or undertighten the bolts, as it can affect the engine's performance.
• Once you have the torque specifications, carefully remove the bolts holding the front cover in place. Take note of their locations and keep them organized to facilitate the reassembly process.
• With the bolts removed, you can now carefully lift and remove the front cover. Be gentle, as there may be other components attached or connected to it.
• After removing the front cover, you will have better access to the fuel line and can proceed with its replacement.

Remember to work carefully and refer to the Tecumseh TVXL220 engine manual for more detailed instructions and torque specifications.

Replacing the fuel line

Step 1: Purchase a suitable replacement fuel line

Before beginning, ensure that you have purchased a suitable replacement fuel line. There are two different sizes of 1/4" Neoprene fuel hose that you can buy: one with a 5/8" OD (outside diameter) from an auto parts store and one with a 1/2" OD from a mower store.

Step 2: Access the fuel line

Remove the engine shroud to make the process easier. You may also need to remove the front cover, the starter, and part of the controls to fully access the fuel line.

Step 3: Remove the old fuel line

If the old fuel line is stuck, you may need to disassemble the front cover, starter, and part of the controls to gain better access. Try using a dowel or a piece of threaded rod to jam into the old and new lines, taping it with electrical tape, and then pulling the lines through.

Step 4: Feed the new fuel line through

Start with a longer piece of the new fuel line and cut it to size as needed. Feed the new fuel line through, pushing and pulling it through any spots with resistance. Pull the new line through from the carb side to the tank side.

Step 5: Connect the new fuel line

Once the new fuel line is in place, connect it to the carb and flush the line before starting the engine.

Optional: Add a fuel filter

Consider adding an in-line fuel filter to provide additional insurance for your engine.

Flushing the line

To flush the fuel line of a Tecumseh TVXL220 engine, you'll need to remove the old fuel line. This can be done by pulling the line out from behind the flywheel, although this can be difficult without further disassembling the front cover, starter, and controls.

Once the old fuel line is removed, you can flush the line using a few different methods:

• Blow compressed air through the line from the carburettor side to the tank side. This will help remove any debris or residue from the line.
• Use an AC flush gun kit to flush the line.
• Disconnect the fuel line and rail, then blow out the lines with compressed air.
• Use acetone to flush the lines, as it evaporates completely.

After flushing the line, you can install a new fuel line. It is recommended to use a new piece of fuel line that is slightly longer than needed and cut it to size. Make sure to use the correct type of fuel line for your application.

Additionally, it is a good idea to clean the fuel tank and the injectors to ensure that the entire fuel system is free of old fuel and debris.

Using a dowel to remove the old line

To replace the fuel line on a Tecumseh TVXL220, you will need to remove the old fuel line. Here is a detailed, step-by-step guide on using a dowel to remove the old line:

Firstly, you will need to disconnect the old fuel line at the carburetor and the fuel tank. Once this is done, take a dowel or a piece of threaded rod and insert it into the old fuel line. This will be used to guide the new fuel line through. Make sure the dowel is long enough to go through the entire length of the fuel line.

Next, tape the old and new fuel lines together securely with electrical tape. This will ensure that they stay connected during the removal and installation process. Now, you are ready to start pulling the old fuel line out. Start from the carburetor side and pull the line towards the fuel tank side. You may need to use a screwdriver to lift up the plate under the flywheel, as there may be too much friction against the hose.

As you pull the old line through, be sure to push and pull the lines to navigate them over the metal tabs that they are routed through. Take your time and work the lines through slowly and carefully to avoid any damage. Once you have successfully removed the old line, you can cut the new line to size, remembering to leave a little extra length to work with.

Finally, flush the new fuel line before connecting it to the carburetor. You can then connect the new fuel line to the carburetor and fuel tank, and your Tecumseh TVXL220 will be ready to go!

Frequently asked questions