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WE HAVE A 2022 YZ 65 THAT AFTER APROX 10 TO 12 HOURS IT STARTED FOULING PLUGS,,,I MEAN COAL BLACK AND OILY....CONTACTED YAMAHA CUSTOMER SERVICE AND TOLD THEM THAT I THINK THE RIGHT CRANK SEAL WAS SUCKING OIL...WHEN I CHANGED THE OIL IT WAS MILKY...PUT A COUPLE MORE HOURS ON IT AND TOOK TO DEALER....THEY FOUND THE WATER PUMP SEAL LEAKING...YAMAHA TOOK CARE OF THAT....I HAD THEM REPLACE THE CRANK SEAL EVEN THOUGH THEY SAID IT WAS FINE WITH A COMP TEST AND LEAK DOWN TEST....HAS ANYONE ELSE HAD THESE ISSUES WITH THERE NEW YAMAHAS OF ANY SIZE???
 
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