Originally Posted by jmacdonald5

Chirping is almost always a belt issue

Originally Posted by dougbk

I have a chirp or short squeal when I quickly close my throttle and the bike is in motion. I am thinking it may be in the primary because the noise is noticed at the beginning of the shifting of the momentum. Could a compensating sprocket do this? Other than that I would suspect a bearing.

I know that diagnosing noises is hard especially if you are not hearing it yourself. I tried the search function first but it is not working for me right now.

The bike is an 06 Ultra with 56k on the clock.

Originally Posted by roamin' iron

I know exactly what you're talking about. I had that same noise on my old Fatboy untill the service manager at the dealership gave me the fix. It's called "poly oil" made by Harley Davidson. It comes in a tube and is a clear grease. Just put a VERY SMALL amount rubbed on at 3 -4 locations of the rear drive belt. I did this once and 20,000 miles later still no chirps. And no ill effects on the belt. Cheap fix, give it a try.

Originally Posted by dougbk

Just came in from the garage and the belt was very loose. I thought about it and realized the dealer put on my rear tire last month instead of me doing it like normal. I will give it a test ride later this morning and let you know if I have to get the poly oil.