116-6317 Extension Springs for Toro Mowers, Replaceable Part No. 116-6317 1-633151 116-0133, Mower Deck Springs, Toro Spring Assembly Kits, 1-Pack

What It Is

This is a replacement extension spring (OEM part number 116-6317) for Toro mower decks. It provides the tension needed to engage and hold the deck belt or blade engagement system on select residential Toro walk-behind and zero-turn mowers.

Fitment & Compatibility

Before buying, verify:

• Deck size: Fits 42”, 44”, 46”, 48”, and 50” Toro decks (check your deck model number).
• Brand/model: Designed for Toro TimeCutter, TimeMaster, Super Recycler, and certain Wheel Horse models. Not for Craftsman, John Deere, or other brands.
• OEM vs aftermarket: This is a genuine Toro spring. Aftermarket versions (like part 1-633151 or 116-0133) should match dimensions but may vary in wire gauge or tension.
• Measurements: Spring is roughly 3.5” long, 0.5” diameter, with closed hooks. Compare to your old spring to confirm.

Key Things to Know

• Quality: Genuine Toro spring—consistent tension and corrosion-resistant. Aftermarket springs may stretch faster.
• Installation: Easy (hand tools only). Use pliers to stretch and hook into place. No special skills needed.
• Common gotcha: Springs can snap if deck is rusted or pulleys are seized. Inspect pulleys and belt condition before replacing.
• 1-pack: Kit includes one spring only. If your deck uses two, you’ll need a second.

Should You Buy It

Yes, if you need a direct OEM replacement for a Toro mower deck spring and want reliable tension without guessing aftermarket quality. Skip if you need a universal spring or have a non-Toro deck.