Spark plug for 1975 4hp

Perchin 1

Cadet
Joined
Jan 29, 2010
Messages
12
Hi guys, I have a 1975 4hp evinrude #45B37A which Im going through and need to know the correct spark plug-They have a ngk B6s is this the right plug? Still waiting on my manual-Thanx in advance-would like the champion plug if able-
 

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,720
Re: Spark plug for 1975 4hp

Champion J6C is the recommended plug. Gapped at 0.030".

B6S is the nearest NGK equivalent. It may not be an exact equivalent and it may not even be the best NGK plug for the engine
 
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