Correct Spark plug for 1990 90HP johnson

kenskat1

Seaman Apprentice
Joined
Sep 20, 2008
Messages
49
I need to know what is the best spark plug and gap for a 1990 90HP johnson outboard. Thanks for any help.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Correct Spark plug for 1990 90HP johnson

A lot depends on your set up and what you use for fuel but with todays fuel the Champion QL77JC4 is a safe choice.
 
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