532169022 169022 Return Spring replacable 532169022 169022 133503 70-0048 Lawn Tractor Blade Idler Return Spring for Hus-qvarna/Pou-LAN Craftsman 42" Mower Deck（ 2 Pcs ）

What It Is

This is a replacement blade idler return spring for 42-inch lawn tractor mower decks. It provides tension to the idler pulley, keeping the belt tight for consistent blade engagement on Husqvarna, Poulan, and Craftsman tractors.

Fitment & Compatibility

Before buying, verify your deck is a 42-inch model. This spring fits many Husqvarna, Poulan, and Craftsman tractors with 42-inch decks that use OEM part numbers 532169022, 169022, 133503, or 70-0048. Measure your existing spring’s length, coil diameter, and hook ends to match. It is an aftermarket replacement, not OEM, so compare visually with your old spring. Do not assume it fits all 42-inch decks—check your model’s parts diagram.

Key Things to Know

• Quality: Aftermarket springs can vary in tension. If yours feels too loose or too stiff, it may affect belt life or blade engagement.
• Installation: Usually a simple hook-and-pull, but you may need pliers to stretch the spring into place. Wear safety glasses—springs can snap.
• Gotcha: If the old spring broke, inspect the idler pulley and belt for damage before installing the new spring.
• Quantity: This listing includes two springs, so you have a spare or can replace both if your deck uses two.

Should You Buy It

If you need a quick, low-cost fix for a broken or stretched idler return spring on a 42-inch Husqvarna, Poulan, or Craftsman mower deck, this is a practical choice. Verify fitment with your specific model first, and be prepared for a simple DIY swap.