Fuel Pump Specification for 915 is

If you require detailed technical information for an OEM development application using ROTAX 915 iS , please contact the distributor for your region:

https://dealerlocator.flyrotax.com/

PS:  Indonesia is serviced by:

Peiport

Reverse engineering indicates that the pumps are Rotax custom assemblies based on the Pierburgh Model E2T - 7.21287.53.0 pump.
The Electrical and Fuel fittings are Rotax Custom Specified.

My own experiments indicat that a new pump can pull about -2.5psi of head in Air.
Implying that about 6 feet of self prime could theoretically be possible, but I wouldn't push my luck.

My installation has ~18" of positve head with a full tank and ~12" of Negative Head at empty.
So in actual operation Self priming is never a real consideration.

Rotax iS Fuel Pumps are having problems right now. I have returned 5 by now. Brand new out of the box and they can't produce the PSI to start the engine. Really bad show and no bulletin about it yet. I am looking to completely do fuel pumpth 915iS and just get credit from Rotax.

SilverLight Aviation wrote:

Rotax iS Fuel Pumps are having problems right now. I have returned 5 by now. Brand new out of the box and they can't produce the PSI to start the engine. Really bad show and no bulletin about it yet. I am looking to completely do fuel pumpth 915iS and just get credit from Rotax.

I heard rumors like this quite a lot. Is this pump that un-reliable? Because we need to understand that this pump is used in aircraft like for example ICON A5 which claims that it can even be flown reliably for a first-time user who never had any flight experience before CMIIW?

Ridwan Wrote:

"... The ..ICON A5 which claims that it can even be flown reliably for a first-time user who never had any flight experience before...  "

Flying the A5 will require a Sport Pilot License with a Sea Plane Endorsement at a minimum.
That hardly describes a " ...first-time user who never had any flight experience... "