Stator Problem

[peterb]

I have a recently rebuilt 1997 175 HP Johnson Ocean Runner. It came with a 90 day warrantee. I have had several instances during which the engine would not start when the engine was warm. Most recently the engine died on me while it was running.<br /><br />I brought it back to the guy who sold it to me. He tells me that the stator went bad, but is covered by the warrantee.<br /><br />Does this sound like it makes sense? What function(s) does the stator perform? Please advise.<br /><br />Thanks,

 

[Joe Reeves]

Re: Stator Problem

Peter..... On the model engines starting with 1973, the stator is a two fold component. The many small coils you see around the sides are the beginning of the charging system. However, the larger black coils at the back of the stator are the beginning of the ignition system and supply 300ac volts to the powerpack capacitor.<br /><br />That area of the engine runs very hot, especially if the charging system is a 35amp system. Due to this heat, in time, the large black coils will start to melt down which results in s voltage drop.<br /><br />When cold, the stator may operate well enough to activate the powerpack, but as it heats up and the voltage drops and the powerpack ceases to function..... result, no ignition. In time, due to the melt down, the stator will not activate the powerpack at all.<br /><br />In my humble opinion, this 35amp charging system is a engineering flaw due to the fact that the stator will eventually melt down again, but it does take quite a bit of time.<br /><br />Be there when your mechanic removes the flywheel if your system is indeed a 35amp charging system. The flywheel on those models have magnets epoxied to the inner surface of the flywheel.... and they have a habit of coming loose. Something you would want to be aware of while your engine is still under warranty.