2Pack Mower Deck Spindle Assembly compatible with MTD part numbers 61806978 and 91806978 Key benefits Restores blade rotation and deck alignment for a cleaner, more consistent cut. Reduces downtime by replacing worn or damaged spindles with two readytoinstall units. Helps prevent vibration and uneven cutting caused by failing spindle bearings. What this part does Replaces the mower deck spindle assembly that supports and spins the cutting blade. Designed as a directfit replacement for equipment using MTD part numbers 61806978 and 91806978. Sold as a 2pack to service multiple decks or to keep a spare on hand. Important attributes Function: mower deck spindle assembly for blade support and rotation. Compatibility: replacement for MTD 61806978 and 91806978 applications. Confirm fit by checking product dimensions and photos before . Quantity: two spindle assemblies included. Performance: restores proper blade tracking and reduces vibration when replacing worn components. Practical use scenarios a failed spindle on a lawn tractor after bearing wear produces noise and uneven cutting. Install both spindles during seasonal deck maintenance to ensure uniform performance across multiple spindles. Keep a spare assembly in the garage to minimize downtime during peak mowing season. Installation notes Designed for bolton replacement with existing deck mounting points and hardware in compatible models. Inspect mower deck and mounting hardware for wear and alignment during replacement. with confidence when replacing worn spindle assemblies. Confirm compatibility with your equipment by comparing the listed part numbers and the provided photos and dimensions prior to .