I noticed theres a primer ball on my external oil tank, (2107 250hp etec). When does this need to be used ? On refills ? signs of loosing pressure ?
I have never seen a primer ball on an oil tank on other engines
The oil tank primer ball is only used for purgie ar from the line during installation or after servicing the oiling system.
Other makes use air pressure or an electrical pump, so a primer is not needed
"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.