RizzyWizzy

Replacing Rotax 912 Fuel Pump

Last updated by RizzyWizzy

Categories: Trike Talk, Equipment

Hi all,

So I was looking at Fuel Pumps for the Rotax 912 80hp and found two different choices on CPS

 

893-110

https://www.cps-parts.com/catalog/rtxpages/cps15-02530.php

 

And then you have 893-115

https://www.cps-parts.com/catalog/rtxpages/fuelpumpassy.php

 

Both of these are mentioned in the Rotax Service Bulliten below as viable replacement pumps.

 

http://www.airborne.com.au/images/aw_directives/SB-015-912-063ul.pdf

 

What is the benefit of the 893-115?

There is this website that explains the benefit of 893-115

 

http://rotaxnews.net/?p=673

 

And I am still confused, but what I understood is that it (893-115) is just a fuel pump by itself and you can buy the accessories that are needed for your 912 engine (because apparently there is a few different types of fuel pump out there so this fuel pump allows you to buy only the needed accessories).

 

Following are some more questions that I have for anyone who can help here, I am getting together with my A & P to replace fuel pump on mine and would like to be prepared with answers to some of the issues others have faced.

 

Fuel Pressure Issues?

I have read on many Forums that when the fuel pump was replaced, they had Fuel Pressure issues, did any of you notice that in your trikes (after replacing your fuel pump) and if so what was the fix?

 

Does Rotax reimburse you any costs for following the Service Bulletin and changing the fuel pump?

On the online forums, some people claim that they got half of the replacement costs by sending in the old fuel pump back. Most say they didn't. Does anyone know anything about it? 

 

What if there is no indication of a problem with fuel pump, should it be replaced?

Well if it is an SLSA then I guess you don't have a choice, but what if it is an Experimental? On some forums a few people said that they called Lockwood Aviation and asked them that if their existing fuel pumps were working fine and there was no indication of an issue with the fuel pump (such as leaking weep holes), should they still replace it and the Lockwood Aviation told them NOT to replace them. What is your view on it?

 

Lastly I watched this video on youtube, I believe the captions are in Italian so it is hard to understand but is this scientifically a correct demonstration of pressure issues? in this video I think they are demostrating that the old pump doesn't have enough pressure and should be replaced.

 

And as always thank you for helping.

 

Regards,

 

Rizzy