FH601V has whistling sound

[artco96]

Hi . sorry I saw this post late. i just did a Kawasaki FH601 that was showing the same symptoms your having with your engine . It was making a distinct Train Whistle / grinding sound . Especial when it was revved up and the rpms started to level out . What I found was the lower PTO Clutch bearing was beginning to seize up . You could still rotate it with the clutch on the crankshaft but upon checking the bearings closer the lower bearing was super hard to rotate when spun with my fingers . I started the engine with the clutch removed and the sound was gone . We replaced the PTO clutch and it cured the problem . If you still have this you might want to check and see if yours has the same issue . Good luck !