The Husqvarna 539106340 Lawn Mower Deck Belt helps transfer engine power to the mower deck for effective blade operation and consistent cutting performance. This replacement deck belt runs around the mower’s pulley system to drive the cutting blades when the deck is engaged. Proper belt tension and movement support smooth power transfer and dependable mowing operation. Replacing a wor... https://www.wholetoolbox.com/husqvarna-539106340-lawn-mower-deck-belt/539106340.html