I bought this unit with a new powerhead but in the first year the M2 lower unit went out, now an injector gone, get it out of shop and starting battery not getting enough juice and yet another miss in engine. The last two fishing tournaments with break downs. Can't afford this motor with 90 hrs on it, and they want you to buy a new one, This is a good site and everyone helps but you can't fix bad. Thank you.
Are you saying that the motor is at least 11 years old but only has 90 hours on it?
You may want to have a conversation with the engine rebuilder and dealer who serviced it.
Another option is to find another dealer who may be more technically oriented to not only fix the problems the right way, but find out why they happened, and correct the root cause.
"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.