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Author	Topic:   Spark Plug Gap: Evinrude 120-HP
lllabry	posted 05-27-2005 08:37 PM ET (US)         What is the proper spark plug gap setting for a 1992 Evinrude 120-HP outboard motor? Thanks in advance Larry
jimh	posted 05-27-2005 09:06 PM ET (US)             Probably 0.035-inch.
Joe Kriz	posted 05-27-2005 11:53 PM ET (US)             lllabry, Which spark plug are you using? Brand? Model? Champion plugs were recommended by OMC. There were many different Champion plug models used in the past and some had a permanent gap, meaning non adjustable. The current plug recommendation for the older models is the QL77JC4 Most manuals at that time suggested a .040 gap for these plugs. Since then, the recommendation has changed to .030 gap
Sal DiMercurio	posted 05-28-2005 02:54 AM ET (US)             All of OMC ...Bombardier engines are now .030. If your running a FICHT, do em at .028 because the ignition is so hot they will be at .040 at 50 hours. Sal

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