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1978 Johnson 15hp possible miss?
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<blockquote data-quote="Pappy" data-source="post: 310639" data-attributes="member: 3278"><p>Sounds a little on the rich side. </p><p>Since this is your first OB am hoping you mixed your fresh gasoline at a minimum of 50:1 mixture to run it on?</p><p>The advice I am giving you will be the same. You will need to do this one more time after putting the boat in the water because your effective mixture will change with the backpressure provided by the water.</p><p>Start your engine and let warm. Turn your mixture screw inward or clockwise in 1/8 turn increments and let the new mixture stabilize for around 20-30 seconds. Keep doing this and the engine should pick up in RPM, smooth out, then slow and possibly spit lean. </p><p>Bring your mixture screw back or counter clockwise to the highest idle then another 1/4 turn. </p><p>The engine will never sound super smooth.......it's a two stroke!</p><p>Do this one more time in the water at the dock and you are set! Have fun and nice score!</p></blockquote><p></p>
[QUOTE="Pappy, post: 310639, member: 3278"] Sounds a little on the rich side. Since this is your first OB am hoping you mixed your fresh gasoline at a minimum of 50:1 mixture to run it on? The advice I am giving you will be the same. You will need to do this one more time after putting the boat in the water because your effective mixture will change with the backpressure provided by the water. Start your engine and let warm. Turn your mixture screw inward or clockwise in 1/8 turn increments and let the new mixture stabilize for around 20-30 seconds. Keep doing this and the engine should pick up in RPM, smooth out, then slow and possibly spit lean. Bring your mixture screw back or counter clockwise to the highest idle then another 1/4 turn. The engine will never sound super smooth.......it's a two stroke! Do this one more time in the water at the dock and you are set! Have fun and nice score! [/QUOTE]
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1978 Johnson 15hp possible miss?
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