Rear Wheel Alignment

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Written by Randy Fox   
Friday, 29 August 2008

Adjusting Belt Tension

If your belt requires adjustment, first, loosen the single, 14mm bolt that secures the rear brake caliper bracket to the lower swing arm, on the right side of the bike. It is the one with the bolt-head that points straight up. See photo below.

 

Rear Wheel Alignment, Belt Adjustment, Brake, Yamaha Road Star

 

Then just hold wrenches on both sides of the rear axle and loosen (but don't remove) the nut from the right side. The left-side (bolt) takes a 22mm wrench. The right-side (nut) takes a 27mm wrench. See photo below.

 

Rear Wheel Alignment, Belt Adjustment, Axle, Yamaha Road Star

 

Tip: To protect the bolt's chrome, you can place a piece of clean cloth between the bolt and wrench.

Tip: Depending on what exhaust pipes you have, you may have to use a box wrench or open-end wrench on the right side. When I had stock pipes, and even when I had Bub Big Willy pipes, I only had room to use an open-end type wrench. I didn’t have a 27mm open-end wrench, so I used a good quality, adjustable, Crescent wrench.

Next, unlock the adjuster bolts. These are horizontal bolts pointing toward the axle, one on each side. To unlock an adjuster bolt, hold a wrench on the bolt-head while using an open-end wrench to loosen the bolt's lock nut. As you do this, be careful not to turn the adjuster bolt, as you will unintentionally change the axle alignment by doing so. See photo below.

 

Rear Wheel Alignment, Belt Adjustment, Tension, Yamaha Road Star

 

To increase belt tension, screw both axle adjuster bolts in by the same amount. If you need to ease belt tension, screw them both out by the same amount.

Then take another belt tension measurement and repeat the above steps until your belt is properly tensioned.

When you have finished, lock the adjuster bolts by holding a wrench on the bolt-head while using an open-end wrench to tighten the bolt's lock nut. Remember, be careful not to turn the adjuster bolt, as you will unintentionally change the axle alignment by doing so.

 
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