HP 21 Problems

HP engines (Hirtenberger, AG Austria) tech support. Owned by RJL Industries since 1990

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HP 21 Problems

Postby Imhoff43 » Fri Sep 01, 2006 7:55 am

Can someone tell me the initial needle setting for the low speed needle?
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Postby MECOA » Sat Sep 02, 2006 11:14 am

I should be well backed out to an extremely rich mix and the high speed is adjusted first.

here is a guide

http://www.mecoa.com/faq/carb/needle_aero.htm
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