1993 Merc 40 hp Idle difference

dpal

Cadet
Joined
Apr 28, 2009
Messages
15
Hello Everyone,

I am hoping to get some input on setting the idle on a Mercury 40hp 1993. I set the timing according to a factory manual and this caused the idle to raise to about 1100 running on hose muffs in the drive way. The carb butterflies are closed. I have not adjusted the low idle screws.

How much will the idle lower at the lake in gear with the drag load?

Thank You in advance.
 
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