Does anyone know the spark plug gap for a 70Hp 1987 Johnson? Thanks in advance.
S SAMMAS5358 Cadet Joined Aug 6, 2005 Messages 8 Aug 24, 2005 #1 Does anyone know the spark plug gap for a 70Hp 1987 Johnson? Thanks in advance.
P papasage Senior Chief Petty Officer Joined Jan 12, 2003 Messages 785 Aug 24, 2005 #2 Re: 70Hp 1987 Johnson spark plug use L77JC4 gapped at 0.04o<br /> or for high speed running UL77V non gap plugg . this is a better high speed performance . but will foul easy with a lot of slow speed running
Re: 70Hp 1987 Johnson spark plug use L77JC4 gapped at 0.04o<br /> or for high speed running UL77V non gap plugg . this is a better high speed performance . but will foul easy with a lot of slow speed running
