BOSFLAG Idler Pulley Kit 1-633109 2-Pack for Exmark Lazer Z 60" — Complete Hardware & Hex Wrenches

The BOSFLAG 2 Pack 1-633109 idler pulley is a direct-fit replacement pulley kit built to restore smooth belt routing and reliable deck operation on Exmark Lazer Z 60" and many Toro/Husqvarna-compatible mower decks.

This replacement kit includes two precision-machined idler pulleys, a complete set of mounting hardware, and a pair of metric L-shaped hex socket wrenches so you can install both pulleys without sourcing extra parts. Each pulley is engineered to match the dimensional and fit requirements of common 1-633109 applications, helping you maintain even belt tension, reduce vibration, and keep your mower deck running consistently during regular mowing tasks.

Will this pulley fit my mower deck model?

Compatibility is broad for this 1-633109 design. The listing replaces several OEM part numbers and fits a long list of Toro Z Master, Grandstand, and 52" 7-Gauge side discharge models, plus equivalents from Husqvarna, Exmark, Oregon, and Rotary. Verify part numbers in your machine manual or compare pulley dimensions to be certain.

• Replaces OEM numbers such as Husqvarna 539102610, Toro 126-7685, Exmark 116-4667, Oregon 78-011.
• Fits many Toro models including Z Master 6000/7000/4000 series and Grandstand models listed in the fitment details.
• Check height 1.15", inner diameter 0.65", outer diameter 6.71" against your existing pulley.

What comes in the kit and what tools are included?

The kit arrives complete so you can replace both idler pulleys without buying extra fasteners or specialty tools. Hardware and tools are sized to match the pulley assembly for straightforward installation and secure fastening.

• Includes two idler pulleys plus hex bolts (3/8"-16 x 1-3/4"), flat washers (ID 3/8" OD 1"), and flanged nylon lock nuts (3/8"-16).
• Two 14mm metric L-shaped angled hex socket wrenches are supplied with nickel-plated finish for corrosion resistance.
• No additional replacement fasteners typically needed—hardware is matched to the pulley specs.

How does the 1-633109 pulley design help deck performance?

The pulleys are precision-machined to provide stable belt tracking and consistent rotation under load. Their balanced construction reduces vibration and helps preserve belt life and deck component alignment during normal mowing operations.

• Precision-machined surfaces promote smooth belt movement and reduce slippage.
• Balanced structure minimizes vibration for steadier cutting performance.
• Dimensional conformity supports reliable fit and extended service when installed correctly.

How do I confirm dimensions before ordering?

Measure the existing pulley or consult your machine's parts manual and compare three critical dimensions—height, inner diameter (ID), and outer diameter (OD). Matching these values ensures correct clearance and proper belt routing on the deck.

• Height: 1.15 inches — overall pulley profile height.
• Inner diameter (ID): 0.65 inches — bore size for the mounting bolt.
• Outer diameter (OD): 6.71 inches — face size that contacts the belt.

Who is this for: This BOSFLAG 2 Pack 1-633109 idler pulley kit is aimed at landscapers, lawn-care professionals, and homeowners who maintain Toro, Exmark, Husqvarna, or compatible mower decks and need a reliable, ready-to-install replacement. It's especially useful when you prefer a complete fix with matched hardware and simple installation tools included, so you can get the deck back into service quickly and with confidence.