External fuel pump rebuild kit?

[robomatic12]

I am having a hard time finding a replacement diaphragm for the external fuel pumps that are on my 787 Speedster. I emailed OSD parts and they said only the entire fuel pump assembly is available. Perhaps there is a better alternative?

 

[Waterluvr]

You can replace that pump with Mikuni's universal impulse pumps or try a local Arctic Cat dealer for a kit, the Sno Pro aftermarket universal kit has the right diaphragm. The new pump is usually about half the cost of the Arctic Cat kit.

Example of the new pump:

Single output:http://www.powersportsuperstore.com...le-Outlet-Rectangul-p/4651965.htm?Click=35177

Dual output:http://www.powersportsuperstore.com...et-High-Volume-DF62-p/4459638.htm?Click=35177

 

[jhjesse]

I am having a hard time finding a replacement diaphragm for the external fuel pumps that are on my 787 Speedster. I emailed OSD parts and they said only the entire fuel pump assembly is available. Perhaps there is a better alternative?

Go genuine Mikuni Aftermarket. Will solve a lot of problems.
http://www.seadooforum.com/showthread.php?63577-fuel-pumps
http://www.watercraftsuperstore.net/Mikuni-carburetor-High-Volume-Fuel-Pump.html

 

[robomatic12]

Fuel delivery problems? Like taking a long time for the carbs to prime initially or?

Is the link waterluvr not a genuine mikuni pump?

 

[jhjesse]

These external fuel pumps are getting old and because they are not made anymore sometimes, it is easier to just replace them with something else. I found these pumps that, even though they are aftermarket, they are genuine Mikuni. My boat has never ran better since the switch.

So...if you are indeed having fuel delivery problems replacing is easier and more dependable. IMHO

I am not sure about the pump waterluver has linked. The main thing is GPH. According to my boat's specifications the one I linked to you fits the bill best for me. I would check the Technical Data page in your manual to be sure. Good luck.

 

[Waterluvr]

Fuel delivery problems? Like taking a long time for the carbs to prime initially or?

Is the link waterluvr not a genuine mikuni pump?

I edited my earlier post to show both of Mikuni's universal pumps, I initially linked to the single output only and should have linked both as the dual pump Jhjesse used is what you want for the 787's, the single works well for single carb applications. I had single on the brain as I was ordering two of them as I linked to it, terrible what the Arctic kit costs for that original pump kit to only be able to use one of the gasket's.

 

[robomatic12]

Thanks a lot guys! That is exactly all the info I needed. I hope I get the same results you did jhjesse.