Question about 2000 Harley Davidson FLHR-FLHRI Road king

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Vibration during deceleration

A friend with a 2003 road king is experincing severe vibration during deceleration from any speed. everything seems normal during aceleration through every gear. replaced the front motor mount, no difference. all the vibration seems to be right under the seat, no abnormal shaking in front end or handlebars. rear belt seems awful tight to me but was adjusted by a harley tech. did not have primary off yet. any help in wich direction to look would be a big help.

thanks eva

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The final drive belt may be too tight. After all, Harley techs are human and make mistakes like everyone else. I've made my fair share of them.

The belt is supposed to be adjusted with the rider on the bike. This is difficult to do in the shop but if there's more than one mechanic, it can be done. Your're final drive belt should have about a 1/2" up an down play in it when a force of 10 pounds is applied to the belt on the lower run of the belt. Some bikes have a "guage" built right into the lower belt guard that looks like a slot with markings on the side. You can purchase one the small tool that applies pressure to the belt at the shop. They aren't expensive. Get someone about your weight to sit on the bike and readjust your final drive belt. If you get it too loose, it will squeak when you shift gears.

Good Luck
Steve

Posted on Jul 04, 2010

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