[bruceb]

Got my paws on the new pump today. It's a match to the original, no modifications or adapters needed.
The fuel filter fitting was different but would fit fine with the original adapter removed from the pump inlet.
After turning on the ignition three times for the two second pump run the lil blue dragon fired right up. It seems to be slightly more perky but not much. My pump must have been failing for some time.
There wasn't much wear showing but it must have been enough.

Second post
But I didn't have a fully unrestricted flow through the pump assembly. I sprayed carburetor cleaner into the outlet and used an air hose to back flush it. A dark colored sediment came out of the white plastic chamber of the pump assembly. What this chamber is, I'm not sure. But after back flushing several times the flow restriction was gone. I hope none of that sediment exited the pump and on to the injectors but I never saw anything come out in the outlet pipe. It was always in the backwards flow.

Third post
Update on this fuel assembly chamber.

I've been looking through YouTube videos trying to get a description of this.
This chamber is the fuel filter but not all submersible pumps have the filter in the tank.
The filter on the pump inlet is basically a pickup screen and not the primary filter element.
It's no wonder Honda wants you to buy the entire assembly, which I refuse to do. I don't replace an entire unit of anything when it isn't necessary.
(Edit) Thinking about what that dark sediment could be, since my tank is clean and my pickup filter is in good shape. I believe it may have come from my old fuel pump. I'd taken the pump apart and found the brushes and contact surfaces were worn rough. The motor didn't have a copper commutator like most motors, but looked more like graphite. This was probably what was in the main filter.

Greg,
Thanks for the extensive write-up. My pump is also squealing, and you convince me to replace it myself [along with an experienced biker friend for moral support]. This will be a first for me to work on anything but bolt on, wired accessories, or plastic.

I bought the same pump you recommended. But I don't understand some details in your three posts above.
1 I haven't opened up the tank yet, so don't know what the assembly is. Looking at a parts diagram, I see what looks like a mounting rack attached to the round plate you remove from the tank. Yeah?
2 Where is the primary filter element? Is this where you cleaned out the dark colored sediment? Is that the filter under the chamber, or elsewhere?
3 Did you replace the mounting plate gasket? My pump didn't come with one, and I doubt I can buy it separately.

Thanks much for your help.

Bruce

 

[bruceb]

Following these instructions above and my tech manual, I replaced my fuel pump a few weeks ago. Not that difficult, particularly when you have an experienced friend next to you [doing a lot of the work ].

My additional observations

1. Drain the tank as much as you can. Then remove the mounting plate while the machine is level, and make sure you have drained enough to lean it onto the kickstand if you plan to do so.
2. Take pictures as you go along, to remind you what goes where. I did so and you can see them here if you like >> Flickr album of pump replacment . Helped when I was uncertain about reinstalling the outer filter.
3. Hardest part was removing the pump from the bracket. It wouldn't slide down until we disconnected the wires and manhandled it. Again the pics came in handy.

I'm not sure that the new pump sounds any different from the old one. For $40, it was an easy decision to play it safe on a pump with 71k miles. I have about 500 miles on it now, and it works flawlessly.

This was the most serious work I've performed. Next up, replace the pistons!

 

[bruceb]

Oh lord.....
I was on a Facebook group for the 900 Vulcan. Some if the questions about what to do made me want to say; For you and others safety, please put down the wrench and slowly back away. 😂
One that stands out in my memory is a photo of a cotter pin in the axle castle nut. They wanted to know how to remove it. That may have been in this forum actually. But honestly, one shouldn't be messing with a wheel if you're that mechanically clueless.

Just one piston then? 🙏