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I have a78 Johnson 85 HP and I am going to replace spark plugs. What is correct gap? I looked at a service manual Clymer and it says gap at .040 and then went to website boatsetup.com and it says .030.
The boatsetup.com chart is up to date as of 2005, I believe. Check the edition on your Clymer Manual If it is the 7th edition the chart has not been updated since 1991, I understand.
I have a78 Johnson 85 HP and I am going to replace spark plugs. What is correct gap? I looked at a service manual Clymer and it says gap at .040 and then went to website boatsetup.com and it says .030.
I have a78 Johnson 85 HP and I am going to replace spark plugs. What is correct gap? I looked at a service manual Clymer and it says gap at .040 and then went to website boatsetup.com and it says .030.