Robert Borger a crit :
>
>914 Builders:
>
>I began to wire up the fuel pumps today and found out that the screw
>terminals are two different sizes. This leads me to believe that
>polarity is important but I can't find anything in the manuals about
>electrical polarity of the pump terminals and there were no
>instructions with the pumps. I'd sure appreciate it if someone could
>tell me if the big terminal screw is positive or negative (earth/
>ground).
>
>
Hi,
If your pumps are standard Pierburg pumps supplied with the Rotax 914,
positive terminal is M4 and negative is M5. If memory serves me right,
the top of the pumps is marked.
You'll find all the necessary details in the Rotax 914 Installation Manual.
If you don't have it, a pdf version is downloadable on my website :
http://contrails.free.fr/temp/InstallM.pdf
Hop this helps,
Regards,
Gilles Thesee
Grenoble, France
http://contrails.free.fr
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