8TEN Deck Rebuild Kit for Toro Exmark Quest TimeCutter SS 4235 MX 4260 42 inch 110-6568-03 Blade Spindle Belt Idler

What It Is

This 8TEN deck rebuild kit provides replacement blade spindles, belts, and idler pulleys for Toro and Exmark 42-inch zero-turn mowers—specifically models like the Toro TimeCutter SS 4235, MX 4260, and Exmark Quest. It’s designed for a full deck overhaul, restoring cutting performance and eliminating vibration or belt slip.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch stamped steel deck and uses OEM part number 110-6568-03 for the spindle assembly. This kit fits:

• Toro TimeCutter SS 4235 (2013–2017), MX 4260 (2012–2018)
• Exmark Quest 42-inch models (2010–2019)
• Also compatible with some Toro 42-inch Wide Area Walk-Behinds (e.g., 30265, 30266)

Check your deck’s spindle bolt pattern – it uses a 3-bolt flange mount, 5/8” shaft diameter. Measure your existing spindle height (approx. 3.5”) to confirm. The belts are 42-inch deck specific (A-section, 1/2” wide). Not for 48” or 50” decks, or older Toro models with different spindle bearings.

Key Things to Know

• Quality vs OEM: Spindles are aftermarket with sealed bearings—good for the price, but OEM Toro spindles may last longer in heavy commercial use. Belts and idlers are comparable quality.
• Installation difficulty: Moderate. Requires removing the deck, unbolting spindles, and re-tensioning belts. Expect 1–2 hours. Have a torque wrench (spindle bolts: 30–35 ft-lbs).
• Common gotcha: The kit may not include new spindle mounting bolts or lock washers—reuse if clean, or buy separately. Also, idler pulley bearings can be tight; grease them before install.
• Check blade bolt size: The spindles use a 5/8” shaft with a 5/8”-18 threaded hole for blade bolts. Ensure your existing blades fit.

Should You Buy It

If you have a Toro or Exmark 42-inch zero-turn with worn spindles, noisy bearings, or slipping belts, this kit is a cost-effective fix for DIY homeowners. It’s not built for daily commercial use (OEM spindles last longer), but for light-to-medium residential mowing, it delivers solid value and includes everything needed in one box.