Cleaning And Removing The Fuel Tank On Your John Deere 755

how to removal and clean john deere 755 fuel tank

Removing and cleaning the fuel tank of a John Deere 755 tractor is a detailed process. It involves several steps, including removing the fuel tank shroud, disconnecting the fuel lines, and draining the tank. Cleaning the fuel tank may be necessary due to contaminated fuel, as water or dirt can enter the tank and cause issues with the tractor's performance. To clean the tank, one method involves using a chain, nut, bolts, and shaking/rotating to remove the crude. Another approach is to use a shop vac to remove any sediment or crud that has settled in the lower lobes of the tank.

John Deere 755 Fuel Tank Removal and Cleaning

Characteristics Values
Step 1 Loosen the 4 10mm bolts holding the hood hinges to the radiator housing bracket
Step 2 Disconnect lights from the hood
Step 3 Remove the hood
Step 4 Remove 4 10mm bolts holding the fuel tank shroud to the radiator bracket
Step 5 Remove 4 13mm bolts from the fuel tank shroud attached to the frame
Step 6 Disconnect the lights harness
Step 7 Remove the tank shroud
Step 8 Remove 2 13mm nuts from the bracket in front of the fuel tank
Step 9 Disconnect the two oil cooler hard lines next to the radiator
Step 10 Remove the 4 10mm bolts holding the radiator fan shroud to the radiator
Step 11 Slide the shroud forward and rest it on the fan
Step 12 Remove both fuel lines from the engine side
Step 13 Slowly raise the radiator up about 1" while pulling the fuel tank outward
Cleaning Put a box of drywall screws into the tank and shake it with some gas to dislodge any debris

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Removing the fuel tank shroud

To remove the fuel tank shroud of your John Deere 755, you will need to first loosen the four 10mm bolts holding the hood hinges to the radiator housing bracket. Next, disconnect the lights from the hood and then remove the hood itself. Now, remove the four 10mm bolts that are holding the fuel tank shroud to the radiator bracket. Following this, remove the four 13mm bolts from the fuel tank shroud that are attached to the frame. You can then remove the tank shroud.

This process will give you access to the fuel tank, which you can then clean.

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Disconnecting the lights harness

To begin, locate the lights harness, which is connected to the tractor's hood. This harness provides electrical power to the lights on the tractor. Before disconnecting any wires, ensure that the tractor is turned off and the lights are not in use.

Once located, the next step is to carefully disconnect the wires or connectors that supply power to the lights. These connectors are typically plugged into a socket or attached with clips or screws. Using the appropriate tools, such as screwdrivers or wrenches, loosen or remove the connectors from their attachment points. Be cautious not to damage the connectors or the surrounding components.

After disconnecting the power supply, the lights harness should be free from the hood. Gently pull or slide the harness away from the hood to create some slack. This step ensures that you have enough space and access to work comfortably.

Now, you will need to identify the specific wires or connectors associated with the lights. The lights harness may contain multiple wires, each serving a different function. Refer to the tractor's manual or a wiring diagram to accurately identify the wires responsible for powering the lights.

Finally, with the wires identified, proceed to detach any additional connectors or fasteners that secure the lights harness to the tractor's frame or nearby components. Again, use the appropriate tools to carefully remove these attachments. Ensure that all connections are properly disconnected before moving on to the next step of removing the fuel tank.

By following these steps, you will have successfully disconnected the lights harness, allowing you to safely and effectively remove and clean the fuel tank of your John Deere 755 tractor. Remember to refer to the tractor's manual or seek professional guidance if you encounter any challenges or uncertainties during the process.

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Draining the gas tank

To drain the gas tank of a John Deere 755 tractor, you will first need to remove the fuel tank. Here is a step-by-step guide:

  • Loosen the four 10mm bolts holding the hood hinges to the radiator housing bracket.
  • Disconnect the lights from the hood.
  • Remove the hood.
  • Remove the four 13mm bolts from the fuel tank shroud attached to the frame.
  • Disconnect the lights harness.
  • Remove the tank shroud.
  • Remove the two 13mm nuts from the bracket in front of the fuel tank.
  • Disconnect the two oil cooler hard lines next to the radiator. You will need a 15/16 and 7/8 wrench.
  • Remove the four 10mm bolts holding the radiator fan shroud to the radiator.
  • Slide the shroud forward and rest it on the fan.
  • Remove both fuel lines from the engine side.
  • Slowly raise the radiator up about 1'' while pulling the fuel tank outward.

Once the fuel tank is removed, you can proceed to drain the gas. Here are some methods you can use:

  • Drain the gas into a can. Removing the gas cap will speed up the process.
  • Put a box of drywall screws into the tank, along with some gas, and shake it to dislodge any debris or rust.
  • Use a radiator shop to boil out the tank.
  • Put a chain, nut, and bolts into the tank and shake/rotate to remove the crude. This method may not work as well with baffles.

After draining and cleaning the gas tank, make sure to reassemble the tractor following the steps in reverse.

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Cleaning the carburetor

To clean the carburetor of your John Deere 755, you will need to first identify whether it needs to be taken apart for cleaning. You can do this by removing the air filter from the air filter housing and spraying carburetor cleaner into the air intake. Start the engine, and if the mower starts and then shuts down, you will need to take the carburetor apart and clean it.

Firstly, use your fuel shut-off valve to stop the fuel flow, and then remove the fuel line from the carburetor. If your John Deere has a throttle and choke cable, remove it. Remove the hardware attaching the carburetor to the air filter housing. Now, slowly remove the springs, being careful not to stretch them out. You may need to twist the carburetor to get the springs off.

Next, remove the carburetor bowl, which stores a little gasoline inside your carburetor. You will find the bowl at the bottom of your carburetor, held on by a screw. Clean around the outside of your carburetor bowl before removing the screw from the bottom of the bowl. Have a rag available to catch any remaining gas in the bowl. When you remove the bowl, be careful not to damage the o-ring that sits between the bowl and the carburetor.

Now, take special care when taking the carburetor apart. Remove the float pin and the float, carefully observing how the float needle is attached. Some of them have a small wire spring holding it to the float, which you will need to reinstall when you reassemble the carburetor. Next, remove the float valve seat. Some of the older ones have a screwdriver slot to allow removal, while some are plastic. Look around the carburetor and see if it has a small idle adjustment needle, and remove this if it has one. You are now done disassembling the carburetor.

Get a good carburetor cleaner, preferably with a small hose that you can attach to the nozzle of the can. Spray the carb cleaner all over the outside of the carburetor. Clean all parts with the carburetor cleaner and blow out all the small holes and passageways with compressed air. Remove all of the non-metallic parts, as the carburetor cleaner will cause them to decompose and plug the carburetor over time. Wash the carburetor cleaner off the metal parts with warm, soapy water, then rinse with clean water. Dry them by blowing them off with compressed air. Make sure that all the passageways are blown dry before reassembling.

If your carburetor is still not working correctly, you may have to take it to someone who has an "ultra-sonic" cleaning machine. This machine uses carb cleaner and ultrasonic vibrations to get the very small passageways clean when traditional methods fail. If you don't feel comfortable with this kind of repair, you should send it to a reputable shop.

As engines sit or get older, fuel left in the carburetor can turn to gum and varnish, causing problems. Today's gasolines contain MTBE and alcohol (ethanol), which turn to "junk and garbage" very quickly. Any gasoline left in a gas can for more than 30 days must be discarded because it will have begun to turn to varnish.

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Reassembling the parts

When reassembling the parts, you will need to reverse the steps you took to disassemble the fuel tank.

First, slide the radiator fan shroud back and lower the radiator. Reconnect the fuel lines to the engine. Then, reconnect the two oil cooler hard lines using a 15/16 and 7/8 wrench. Next, attach the tank shroud by securing the two 13mm nuts to the bracket in front of the fuel tank. After this, secure the tank shroud to the radiator bracket using the four 13mm bolts.

Now, you can reattach the hood by securing the four 10mm bolts holding the hood hinges to the radiator housing bracket. Reconnect the lights to the hood. Finally, you can secure the side covers and grille.

Frequently asked questions

To remove the fuel tank, you will need to:

- Loosen the 4 10mm bolts holding the hood hinges to the radiator housing bracket.

- Disconnect lights from the hood and remove the hood.

- Remove the 4 10mm bolts holding the fuel tank shroud to the radiator bracket.

- Remove the 4 13mm bolts from the fuel tank shroud attached to the frame.

- Disconnect the lights harness.

- Remove the tank shroud.

- Remove the 2 13mm nuts from the bracket in front of the fuel tank.

- Disconnect the two oil cooler hard lines next to the radiator.

- Raise the radiator and pull the fuel tank outward.

There are several methods you can use to clean the inside of the fuel tank:

- Take the fuel tank to a radiator shop and have them boil it out.

- Put a chain, nut, and bolts inside the tank, then shake and rotate to remove the crude.

- Fill the tank with gas and add a box of drywall screws. Shake the tank to dislodge any debris.

- Use a vacuum hose to clean the lower lobes of the tank below the fuel line.

If your fuel tank has water in it, you will need to:

- Drain the gas tank completely.

- Remove the bowl of the carburetor and drain it.

- Clean the carburetor and the gas line.

Before installing the tank, blow air into the fuel line between the fuel filter and the tank to remove any small pieces that may have gotten into the line.

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