03-21-2016 06:38 - edited 03-21-2016 06:39
As long as an engine has the proper proportion of fuel and air, adequately compressed, and ignited at the correct time, it will run well. If any one of those items are out of spec, then operational efficiency is compromised.
Your dealer has to troubleshoot your motor competently to find the reason for poor running.
Solids in the filter is a dead give a way for possible contamination of the fuel system and injectors. Talk to your service manager and the tech. Evinrude also has a dealer support team to assist those with hard to diagnose problems. Insist that your dealer take advantage of the team, if needed.
Has the muffler filter and the VST filter been replaced and is the motor idling at the correct temperature?
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.