50" Deck Rebuild Kit for Cub Cadet ZT1 50, ZT2 50, Z 50, Craftsman Z 550, ZS6700 Includes 3 Pack 918-06980 Spindle Assembly with 756-04511B 756-05034A Idler Pulley 942-05052A Mower Blades

What It Is

This 50-inch deck rebuild kit provides all the major wear components to restore cutting performance and spindle operation on select Cub Cadet and Craftsman zero-turn mowers. It includes three spindle assemblies, an idler pulley, and three mower blades—everything needed for a full deck overhaul.

Fitment & Compatibility

Before buying, confirm your mower has a 50-inch stamped steel deck and check the model series: Cub Cadet ZT1 50, ZT2 50, Z 50, and Craftsman Z 550 or ZS6700. The spindles are OEM-style replacements (part 918-06980) and include the correct bearings and housing. The idler pulley (756-04511B and 756-05034A) replaces the factory tensioner pulley. Blades (942-05052A) are 18.5-inch with a 5-point star center hole—measure your existing blade length and center hole shape to verify fit. If your deck uses a different idler arm or belt routing, double-check the pulley size (4.00-inch OD) matches your original.

Key Things to Know

• Installation difficulty: Moderate. You’ll need basic hand tools, a socket set, and a torque wrench. Expect 1–2 hours if you’ve done deck work before; 3+ hours if new to it.
• Quality note: Spindles are pre-greased and sealed, but some users add extra grease to the zerk fittings before installation for longer life.
• Common gotcha: The idler pulley may require a different bolt length than your original—check thread pitch (5/16–18) and use thread locker to prevent loosening.
• Blade orientation: The blades are marked “this side up” and have a slight twist—install with the lift wings toward the deck shell for proper grass discharge.

Should You Buy It

If your deck has noticeable vibration, uneven cut, or worn spindles (play in the blade shaft), this kit is a cost-effective alternative to buying parts individually. It’s best for DIY owners of the listed Cub Cadet or Craftsman models who want a single-box solution—just verify your deck size and spindle bolt pattern before ordering.