Caltric 60" Deck Flat Idler Pulley Compatible with Exmark FX730V ECV740 CV742 116-9639 1169639

What It Is

The Caltric 60" Deck Flat Idler Pulley is an aftermarket replacement pulley designed to guide and tension the drive belt on zero-turn mowers with 60-inch cutting decks. It fits Exmark engines like the FX730V, ECV740, and CV742, replacing OEM part number 116-9639.

Fitment & Compatibility

• Primary fit: Exmark mowers with 60" decks using the 116-9639 OEM pulley. Common models include Lazer Z, Lazer Z X-Series, and Quest with 60" decks.
• Engine note: Compatible with Kawasaki FX730V, ECV740, and CV742 engines, but the pulley mounts to the deck—not the engine. Confirm your deck model, not just engine.
• Measurements: OEM pulley is 4.0" outer diameter with a 0.625" (5/8") bore. Measure your old pulley’s diameter and shaft hole before buying. Caltric’s specs match these, but verify.
• Belt width: Works with 1/2" and 5/8" wide deck belts. Check your belt width and if the pulley’s groove matches.

Key Things to Know

• Quality check: Caltric is a budget aftermarket brand. While this pulley has a 5.0 rating (based on 1 review), inspect the bearing smoothness and metal finish before installation—defects are rare but possible.
• Installation difficulty: Easy. Remove the center bolt, swap pulleys, and re-torque to 30-40 ft-lbs. No special tools needed.
• Common gotcha: The flat idler pulley has no groove—it rides on the flat side of the belt. Ensure your deck uses a flat idler, not a V-groove pulley. Mixing them causes belt slippage.
• OEM alternative: Exmark 116-9639 costs $50-70. Caltric saves you 30-50%, but may wear faster under heavy use. For occasional mowing, it’s fine.

Should You Buy It

Buy this Caltric pulley if you need a low-cost, functional replacement for an Exmark 60" deck flat idler on a residential or light-commercial mower. It’s a straightforward swap, but verify your pulley’s diameter and bore first. If you mow professionally or run a heavy-duty fleet, spring for the OEM part for longer life.