Proper Spark Plug Gap

dblanton

Petty Officer 2nd Class
Joined
Sep 22, 2006
Messages
101
On a 75 HP 1981 Evinrude what is the correct spark plug gap?
I have two different manuals for this motor; one manual calls for a 0.040 gap and the other manual calls for a 0.030 gap.
I currently have the gap set at 0.030, if the gap is set to close will this cause any problems?
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Proper Spark Plug Gap

the reason is that one is recommended for high speed, the other for trolling. if you do both split the difference.
 
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