Replacing the drive belt on your Ariens Edge 42-inch zero-turn mower is essential for maintaining optimal performance. Let’s walk through the steps to install a new belt: Safety First: Disconnect the spark plug wire to prevent accidental engine starts. Lower the cutting deck to its lowest position. Remove the Belt Guard: Use a screwdriver to remove the metal belt guard that protects the belt from dirt and debris. Belt Keeper Rod: Remove the belt keeper rod (held in place by screws). This prevents the belt from loosening while spinning. Loosen the Idler Pulley Nuts: Take a photo of the existing belt orientation for reference. Use a socket wrench to loosen the nuts inside each pulley (don’t remove them yet). Remove the Old Belt: Once the pulleys are loosened, the belt should come off easily. Install the New Belt: Route the new belt around the pulleys following the diagram (see the image below). Ensure proper tension using the tensioner spring in the middle. Reattach the Belt Guard and Keeper Rod: Secure the belt guard and reposition the belt keeper rod. Remember, the diagram is crucial for correct belt placement. The belt connects the spindles, idler pulleys, and the engine drive pulley. https://www.dillongarden.com/craftsman-42-inch-mower-deck-belt-diagram/