Re: stator problem
Depending on the usage of the motor, the actual life of the stator can vary. They are located at the hottest point of the motor, and heat is the biggest enemy of electronics aside from water. If the flywheel does not have cooling holes in it, it will most likely run at a temperature that over time will break down the insulators on the low speed stator for some reason at a higher rate than the high speed stator winding (low always seems to go out before the high). Ive researched this extensively due to this issue on my previous bass boat with a Mercury Black Max, and now on my upgrade boat Im having the same problem (Mariner 200 efi magnum). Currently in the process of dropping 372.00 to remedy the fix, but at least it will be hauling azz again! The indicator is usually the motor acting as if its missing on partial throttle and rpm's lower than about 4200. Having problems getting on plane or erratic firing of cylinders in this range. if you are able to at some point get on plane and at WOT and 4200+rpms function without a glitch, its almost a sure sign your stator is toast. Some people will say triggers, switch boxes, etc.....common sense and an analytical/diagnostic type of approach will tell you this could only be the stator. Other causes can be bad switch boxes and or bad voltage regulator/rectifier can add to problem as a short can lead to premature heat failure of the stators low and high speed windings.
Good luck!
