89 Johnson 40HP Spark Plug Gap

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: 89 Johnson 40HP Spark Plug Gap

Champion QL77JC4, gapped to .040 .
 
Joined
May 24, 2003
Messages
1
Re: 89 Johnson 40HP Spark Plug Gap

Can you please give me the correct gap for a 1991 Johnson 40 hp? The plugs I have are Autolite 4092. Is there a problem with using these rather than the Champion QL78C that I took out? Thanks!
 
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