How do you tighten a loose drive belt?

I replaced an alternator on a 2002 Nissan Altima but the drive belt is now too loose even with it having an automatic belt tensioner

The drive belt is too loose. Tighten the belt. (but not too tight!)

Your air compressor drive belt is loose, Tighten it up! geterdone

There is no belt adjustment on a golf cart. However, if the belt is too loose, it may be a drive clutch problem, and an adjustment to the clutch can be made.

Loose or worn A/C drive belt. Tighten or replace. If serpentine belt, replace.

My belt is too loose, I have to tighten it.

You don't tighten a serpentine belt. The tension is controlled by a tensioner. If it is loose, then the belt has stretched and needs replacing.

You cannot tighten the belt. It has a tensioner that holds the proper tension. If the belt is loose then either the belt is worn out or the tensioner has failed.

By replacing the belt tensioner, this is a serpentine belt systems there is no adjusting the alternator bolt tighten the drive belts, if the belts are loose you must replace the belt tensioner and the belt to retain optimum performance from you Charging sytem as well as you other equipment being driven by the belt system.

You do not tighten a serpentine belt. It has a tensioner that keeps it at the correct tension. If it is loose, either the belt is worn and needs replacing or the tensioner is defective.

Loosen the tensioner pulley. Remove the old drive belt. Install the new drive belt. Tighten the new drive belt with the tensioner pulley.

Loosen the drive belt tensioner pulley. Remove the drive belt. Put the new drive belt on the pulley. Tighten the tensioner pulley.

The drive belt is fixed. There is no way to tighten it. They are model specific. You need to have the correct belt for the snowmobile. Now if you are referring to the track, that would be a different story. They are adjustable.

The belt is tightened automatically by the belt tensioner. If the belt is too loose, it's time to replace it.

You don't. Serpentine belts are adjusted by a spring loaded device called a belt tensioner. If you belt is loose, then the tensioner is broken.

tighten belt or replace it if it is glazed on contact surfaces

The first thing to check is your fan-belt tension, if it's loose it will slip and not drive the alternator efficiently. Adjust/tighten it as required

What belt? Drive belt is easy, just loose the 3 bolts on the alternator, pry the alternator forward, put the new belt on, pry the alternator back, and tighten the bolts. Power steering belt is much more difficult.

the Serpentine Belt on the 91 Lebaron is on Tension Pulley, you dont tighten it. But if it is loose and you need to tighten it you just go and buy a new belt and put that on.

You can't, the belt is called a serpentene belt, you have to replace the belt.

if your belt is loose, the tensioner probably needs replacing. the tensioner is the mechanism that keeps the belt tight.

When a serpentine belt is loose it means either the belt has stretched and needs replacing, or the idler tensioner is defective and needs replacing, or both.

you don't tighten a serpentine belt the tension is supplied by a tension pulley if belt is loose, it is time to replace belt or tension pully if tension pully needs repplacing belt will be worn anyway

It has a serpentine belt with a built in tensioner. You can't tighten it. If it is loose, it needs replacing or the idler pulley is defective, or both.

You don't tighten it. It has an idler pulley that keeps the proper tension. If this is an old belt and is loose, then it needs replacing. If you have installed a new belt and it is loose, then either you installed the wrong belt or the idler spring is weak and the idler needs replacing.