IDLER PULLEY FOR MTD 756-04511B ZT-L42 50KW 54KH S42 S46 S50KH RZT-L42 RZT-L46

Idler Pulley for MTD

This idler pulley for MTD mowers is a direct replacement for OEM part number 756‑04511B and maintains proper belt tension in the mower deck drive system.

Overview

The idler pulley for MTD ZT‑L42, 50KW, 54KH, S42, S46, S50KH, RZT‑L42, and RZT‑L46 zero‑turn mowers guides and tensions the deck belt to prevent slipping. Replacing a worn idler pulley for MTD models restores smooth blade engagement and reduces belt wear. This idler pulley for MTD matches OEM specifications for reliable performance.

Built For Performance

• Heavy‑duty steel construction withstands constant belt pressure
• Double‑sealed bearing keeps debris out
• Precision‑balanced for low vibration
• Direct replacement – bolts into existing mounting holes
• Corrosion‑resistant finish extends service life

Fits These Machines

• for MTD ZT‑L42
• for MTD 50KW
• for MTD 54KH
• for MTD S42
• for MTD S46
• for MTD S50KH
• for MTD RZT‑L42
• for MTD RZT‑L46

On‑The‑Job Use

• Replaces worn idler pulleys on MTD zero‑turn mowers during belt service
• Used when belt tension becomes loose or pulley wobbles
• Ideal for preventive maintenance before the busy mowing season

Specs At A Glance

Good To Know

Q: Will this idler pulley work on an MTD tractor with a different deck size? A: It is designed for the specific models listed; other deck sizes may require a different pulley diameter or belt width.

Q: Does the idler pulley come with a mounting bolt? A: No, the pulley only includes the bearing and pulley body; reuse your original bolt or shoulder screw.

Slight variation in finish or dimensions may occur between production runs, and serial number, so confirm compatibility before ordering.