purchased a new 2004 motor several months ago and it is almost "absolutely wonderful". great fuel economy and performance on my 20' sea ark jon boat.<br /><br />i notice a fairly slight ruff running around 1000 - 1300 rpm while in gear. a new set of spark plugs were installed after prox. 20 hrs. is this normal for this motor or can this be adjusted out some way. have about 180 hrs on the motor so far and it has not been seen by the dealer mechanic except for the original start up installation. any advice as to why this is happening will be appreciated. ken.
