Hello All,

Just a quick question before I run to the dealer. I have a 2006 150 Optimax with 160 hours. When I ran it for the first time this year (engine was fully winterized, ran great before storage) I noticed a strange vibration (you can almost see the outboard shaking a bit) when engaging the throttle in forward or reverse with MINIMAL way on. When I advance the throttle further, every thing is fine. I have no fault codes, temp and water pressure is fine, etc. Plugs were changed before I winterized. I've added quick kleen and turned the fuel over once so far. Anyone have any thoughts? Again, idles fine in neutral and any speed past minimum clutch engagement.

Thanks

Might try a new set of spark plugs.

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