Brought my RK in for new tires and wheels end of last season and noticed a chirping noise coming from the left rear under acceleration. Drove me nuts for a while. While doing spring checkup, I noticed that my drive belt was way out of spec. More than 3/4" of travel. Set it back to spec and noise was gone.
This work was done by a HD dealer. They have to stop giving our bikes to the new guys to work on for the small jobs. At least someone should check their work.

 

Hey FD Hog. My wife has an 02 FatBoy and the chirping drives her, and me, crazy. I have not been able to get anyone to fix this, 2 dealers. I do a bit of work on our bikes but not sure whats involved here. Any chance you could spell out what you did to resolve the issue? Thanks in advance.

 

All I did was adjust the drive belt back to spec. There are a few threads on this subject. Others have used poly lube on the belt. Check her belt tension.

 

chirp on decel points to slack belt- the outside of the belt contacts the primary case just above and behind the front pulley.

often when a lowering kit is put on & rider forgets to check tension


Mike