Tonight I replaced my fuel filter and while I was in there I tossed in a new fuel pump. The bike has 94000 miles and I had some bad fuel a while back and have been wanting to replace the filter. A member here mentioned another fuel pump option rather than the entire assembly option that Honda has for $400. The fuel pump motor in the ST1300 is a common automotive pump. I would post the link to ebay but it will be gone soon and just be a dead link the model number listed is:
A Google search of that will result in several options. The kit I bought off ebay was $68. Here is an example of the kit. (note over 400 vehicles use this pump)
High Flow Pump
The one problem with this option is the small sock that attaches to the pump pickup has to be reused. Honda doesn't sell this part. While I was in there I also replaced the Fuel Filter (16900-MBG-013); Filter, Fuel Return (16714-MBG-000) and when the assembly is removed you should replace the gasket (17574-MN5-000) which seals the fuel pump assembly. There are also some crush washers on the banjo fitting that could be replaced if you are ordering parts anyhow. I don't have the part number handy.
There is already an article on fuel filter replacement so I will focus this on the fuel pump. It is pretty much the same process so I would recommend looking at both articles. Since the tools needed and the process for the removal of the assembly is documented there I will skip that part of the job. It is pretty straight forward.
Ok I will start by saying that the towel is clean. Just stained. You do want a clean surface to work on.
Here is the assembly removed.
At the bottom of the assembly is a rubber boot that holds the Fuel Return Line Filter. This material is a stainless steel wool looking material. I have seen stuff for cleaning dishes that looks very much like this. I probably didn't need to replace it but it was cheap and I was ordering stuff anyhow.
Here is a comparison of the old and the new. The pic didn't turn our that well.
Once removed you can see the sock on the intake of the fuel pump.
To remove the pump there is a single screw that holds a band around the pump. There is also a ground wire attached to this screw. Remove it and then straps will bend back. Also disconnect the power lead from the pump.
Since I was replacing the filter and the pump I found it easier to remove them together and disconnect them separate from the assembly.
Swapping the part was as simple as disconnecting hoses and reconnecting them. The sock is held in place by a friction washer. I popped off the old one and used the new one that came with the packaging. There wasn't an easy way to get a shot of that but it is pretty simple. As long as you have the pump and possibly the filter out of the way, now would be a good time to replace the gasket. You can do it at the end but it is easier to do it now at this point with the pump and possibly the filter out of the way.
When reassembling make sure the return filter is where the return line dumps fuel back into the tank. Basically between that and the sock that has to get reused as seen here.
Button the rubber boot back up and you are done reassembling the pump assembly.
Here are some shots showing the old pump and the new pump side by side.
New pump on top
New pump on the Right. This shot is the intake of the pumps. The post in the middle are there for the friction washer to retain the pre-filter sock.
New pump on the Right. This shot shows the output and the connector for the power.
When I opened up the rubber boot on my pump this is the debris that was located on the pre-filter sock.
Since it may come up, there isn't a real reason I am replacing the pump. I am having some issues with stalling where I wanted to replace the filter. At $68 I figured I might as well throw a new pump in as I have close to 100K miles on this pump. My stalling issue is more likely related to the fuel filter, fuel pressure regulator or vac leak which I will address if the filter doesn't resolve my stalling issue. The new pump comes with a new pre-filter sock but it will not fit in our application. Blowing on the old filter and comparing it to the new one showed that it was pretty restricted. The entire process was a little over an hour.
Hope this option helps someone out there if there is a fuel pump issue.
› Site Search for: ST1300 - Fuel Pump Replacement