I HAVE BEEN A YAMAHA DEALER FOR YEARS, AND I HAVE NEVER KNOWN A STATOR TO GO BAD ON A YAMAHA. MERCURY, YES BUT NOT YAMAHA. IN THE LATE 90'S I REPLACED 125 STATORS ON MERCURYS. YOU MAY NEED A SECOND OPINION. I AM NOT DOWN ON MERCURY ENGINES; I OWN A 150EFI MERC ON A TRITON 196TA!
MONK WILSON http://MONKSCRAPPIE.COM