How do you tighten belt on 1990 Isuzu trooper?

To tighten the belt on a 1990 Isuzu Trooper, first locate the tensioner pulley. Use a wrench or ratchet to turn the tensioner arm, which will relieve tension on the belt. Once the belt is loose, inspect it for wear and proper alignment, then reposition or replace it as needed. Finally, release the tensioner to tighten the belt back into place, ensuring it is secure on all pulleys.