607616 – Hustler Deck Idler Tension Spring

✅ Compatible With

• Hustler mower models including Raptor (X, XD, XL, XDX), FasTrak (SD, SDX, RD), Dash, Super S, Super 104, TrimStar, and others

• Replaces older part numbers: 122388 and 604291

• Used to maintain tension on the deck belt via the idler arm system

🔧 Specifications

• Type: Tension / extension spring

• Material: High-strength steel

• Function: Applies consistent pressure to the idler arm, keeping the belt properly tensioned during operation

• Updated Design: Supersedes earlier brass-colored springs for better durability and performance

🔍 Product Use

This spring is a critical part of the mower deck's belt system. It keeps the belt tight under changing loads and terrain conditions, preventing slippage and ensuring smooth blade engagement. A worn or stretched spring can lead to poor cut quality and belt noise.

⭐ Features & Benefits

• ✅ OEM Fitment – Designed to exact Hustler specs for reliable replacement

• ✅ Improved Belt Life – Maintains correct belt tension and alignment

• ✅ Enhanced Durability – Heavy-duty materials resist stretch and fatigue

• ✅ Restores Performance – Helps eliminate belt slap, misalignment, and premature wear

• ✅ Direct Replacement – Installs quickly using existing mounting points

⚠️ Installation Tips

• Release belt tension before removing the old spring

• Ensure correct orientation and secure anchoring

• After fitting, check belt tracking and deck pulley alignment

• Run the mower briefly and inspect the spring under load

• Replace any worn idler components along with the spring if needed

📦 What’s Included

• 1 × Hustler Deck Idler Tension Spring (Part No. 607616)