Rajan Wilcox
If your Onan generator isn't starting, the fuel pump may be bad and need replacing. The fuel pump is located behind and below a bunch of stuff on the left side of the generator compartment. To get to it, you’ll have to remove everything on top and in front of it. You'll need a T-30 TORX socket to remove the TORX screws holding the control board and other stuff. You'll also need Vice Grips to pinch the incoming fuel line from the gas tank. Once you've removed the fuel supply line from the genset, you can remove the mounting bolt from the fuel pump and pull the pump straight down.
| Characteristics | Values |
|---|---|
| Location of fuel pump | Behind and below a bunch of stuff on the left side of the generator compartment |
| Tools needed | T-30 TORX socket, Vice Grips, 9/16" wrench |
| Steps to replace fuel pump | 1. Remove everything on top and in front of the fuel pump |
| 2. Pinch the fuel line between the fuel tank and fuel filter | |
| 3. Place a drip pan below the left rear of the generator | |
| 4. Disconnect the fuel hose from both ends of the fuel pump and fuel filter | |
| 5. Remove everything blocking access to the fuel pump (control board, solenoid, cables) | |
| 6. Remove the bolts holding the fuel pump and remove the fuel pump and filter | |
| 7. Remove the mounting bolt from the fuel pump, and pull the pump straight down | |
| 8. Guide the fuel hose and the tan wire down through the holes in the base | |
| 9. If reusing the old fuel filter, unscrew it from the pump, and screw it into the new pump | |
| 10. Remove the pump to carb hose from the old pump, and install it onto the new pump |
Explore related products
What You'll Learn
Unplugging the tan wire
To unplug the tan wire, you must first locate it. The tan wire is right next to where the fuel hose goes down through the base of the genset. Once you've found it, simply unplug it.
You will then need to get underneath the genset and remove the fuel supply line from the genset. Plug the hose to prevent it from dripping gas all over you. You may have to guide the fuel hose and the tan wire down through the holes in the base as you do this.
If you are reusing the old fuel filter, unscrew it from the pump, and screw it into the new pump.
To replace the fuel pump, you will need to remove the mounting bolt from the fuel pump and pull the pump straight down. You will also need to remove the pump to carb hose from the old pump and install it onto the new pump. Don't forget to put on the protective sleeve if it falls off.
Bobcat Fuel Pump Replacement: A Step-by-Step Guide for the 863 Model
You may want to see also
Explore related products
Removing the fuel supply line
To remove the fuel supply line, you will need to unplug the tan wire next to where the fuel hose goes down through the base of the genset. Then, get underneath the genset and remove the fuel supply line from the genset, plugging the hose to prevent dripping.
You will then need to remove the mounting bolt from the fuel pump and pull the pump straight down, guiding the fuel hose and tan wire down through the holes in the base as you do so.
If you are reusing the old fuel filter, unscrew it from the pump and screw it into the new pump. You will also need to remove the pump to carb hose from the old pump and install it onto the new pump. Make sure to put on a protective sleeve if it falls off.
It is recommended that you pinch the fuel line between the fuel tank and fuel filter to prevent fuel from flowing when you disconnect the hose. You should also place a drip pan below the left rear of the generator to catch any fuel that runs out when you disconnect the fuel hose from both ends of the fuel pump and fuel filter.
Replacing the Fuel Pump in a 1990 Toyota Corolla: Step-by-Step Guide
You may want to see also
Explore related products
Removing the mounting bolt
To remove the mounting bolt, you will need to get underneath the genset. First, unplug the tan wire next to where the fuel hose goes down through the base of the genset. Then, remove the fuel supply line from the genset and plug the hose to prevent gas from dripping. You may need to guide the fuel hose and the tan wire down through the holes in the base as you remove the mounting bolt.
Replacing the Fuel Pump in a 2002 Chevy Avalanche
You may want to see also
Explore related products
Disconnecting the fuel hose
Firstly, locate the fuel hose. It's usually found near the base of the generator, where it goes down through the genset. There should be a single tan wire next to it. Before disconnecting the hose, it's important to pinch the fuel line between the fuel tank and fuel filter to prevent any fuel flow. This can be done with a tool like Vice Grips.
Now, place a drip pan below the generator to catch any fuel that may drip out during the process. This is an important safety measure to avoid any spills. Once the drip pan is in place, you can proceed to disconnect the fuel hose from both ends of the fuel pump and fuel filter. Be careful to guide the fuel hose and the tan wire through the holes in the base as you remove the fuel pump.
If you're reusing the old fuel filter, you'll need to unscrew it from the pump before removing the pump itself. Make sure to keep the fuel hose plugged to prevent any dripping during this process. Finally, remove the mounting bolt from the fuel pump and carefully pull it straight down.
When installing the new fuel pump, the process is mostly the reverse of removal. However, don't forget to install a new hose clamp on the fuel line and ensure the protective sleeve is in place.
How Air Fuel Ratio Sensors Impact Your Engine's Performance
You may want to see also
Explore related products
Reusing the old fuel filter
If you are reusing the old fuel filter, you will need to unscrew it from the old pump and then screw it into the new pump. The fuel filter is screwed directly into the inlet of the fuel pump, which is located under the genset base, at the front left corner.
To access the fuel pump, you will need to remove everything on top and in front of it. This includes the control board, solenoid, cables and the fuel supply line. You may also need to remove the mounting bolt from the fuel pump.
Before you begin, pinch the fuel line between the fuel tank and fuel filter to prevent fuel from flowing when you disconnect the hose. Place a drip pan below the left rear of the generator to catch any fuel that runs out.
When you have removed the old pump, remove the pump to carb hose and install it onto the new pump. Don't forget to put on the protective sleeve if it falls off.
Replacing the Fuel Pump in Your BMW 530i: Step-by-Step Guide
You may want to see also
Frequently asked questions
The fuel pump is located behind and below a bunch of stuff on the left side of the generator compartment. To get to it, you’ll have to remove everything on top and in front of it.
You will need a T-30 TORX socket to remove the TORX screws holding the control board and other stuff, and vice grips to pinch the incoming fuel line from the gas tank.
First, pinch the fuel line between the fuel tank and fuel filter so that no fuel flows when you disconnect the hose. Place a drip pan below the left rear of the generator where the fuel pump is located to catch any fuel that runs out. Disconnect the fuel hose from both ends of the fuel pump and fuel filter. Remove the bolts holding the fuel pump and remove the fuel pump and filter.
