Rebel 500_to adjust chain
Chain slack should be between one inch and 1 3/8 inches.
(For reference, my chain was at 1 3/4 inches and it took 3/8 turn of the 5mm hex wrench to bring it to 1 1/8 inches.)
You do not need to raise the rear wheel – just have bike on side stand and in neutral.
Loosen rear axle nut (need 7/8 inch wrench or 24mm socket)
If you use a 7/8 inch wrench, put tape on swingarm on the left side of rear axle nut to protect from scratching.
Loosen the lock nuts on each side (need 17mm wrench) as you hold the adjusting bolt (need 5mm hex wrench) so the adjusting bolt’s setting will not be changed.
Turn adjusting bolts an equal amount. If chain slack is 1.75 inch, you would need a little more than a quarter turn to reduce chain slack to one inch or slightly more.
Check scale graduations on both sides of swing-arm to make sure they are the same. This is for proper rear axle alignment.
Tighten the lock nuts on each side to 15 ft/lbs (17mm wrench) as you hold the adjusting bolt (5mm hex wrench) so the adjusting bolt’s setting will not be changed.
Tighten rear axle nut to 65 ft/lbs (7/8 inch wrench or 24mm socket)
Rebel500 