The ROP Shop Spindle Assembly for 2016 Toro TimeCutter SS 5000 74730, 74731, 74732 ZTR Mowers

What It Is

This spindle assembly is the rotating hub that drives the mower blade on your Toro TimeCutter SS 5000 zero-turn mower (2016 models 74730, 74731, 74732). It replaces a worn or failed spindle to restore cutting performance.

Fitment & Compatibility

Before buying, confirm your mower is a 2016 Toro TimeCutter SS 5000 with model number 74730, 74731, or 74732 (check the serial plate under the seat). This aftermarket spindle fits 42-inch and 50-inch deck versions of those models. Measure the spindle shaft diameter (likely 5/8-inch) and bolt pattern to match your deck. OEM part cross-reference is Toro 131-7190 or 131-7190-03. Not compatible with other TimeCutter series (SS 3225, 4235) or non-2016 models.

Key Things to Know

• Quality: Aftermarket part at a budget price. Some users report shorter lifespan vs. OEM, but adequate for residential use.
• Installation: Moderate difficulty. Requires removing the deck, blade, pulley, and old spindle. You’ll need basic hand tools and a torque wrench for the spindle nut (specs: 45-55 ft-lbs).
• Common gotcha: The included bearings may be pre-greased but not sealed as well as OEM. Check for play after installation and re-grease if possible.
• Return policy: Sold by ROP Shop; verify their return window as fitment issues are not uncommon with aftermarket parts.

Should You Buy It

If you need a quick, low-cost fix for a worn spindle on your 2016 Toro TimeCutter SS 5000 and are comfortable with moderate DIY installation, this is a viable option. For heavy commercial use or if you want maximum durability, consider spending more on an OEM Toro spindle.