Cub Cadet ZTX-6 fire hazard from Kawasaki engine voltage regulator (CPSC 24-256)

## Affected machines This bulletin covers the **Cub Cadet ZTX-6** portion of CPSC recall 24-256. ZTX-6 is Cub Cadet's commercial-grade flagship zero-turn mower line, available in 54", 60", and 72" deck configurations. The recall is **engine-specific**, not mower-specific. ZTX-6 units in scope are those with a Kawasaki engine (model year 2021-2023) bearing the defective 21066-0785 voltage regulator. The engine model and serial numbers are on the engine fan housing. ### Recalled Kawasaki engine models (MY 2021-2023) FJ400D, FS600V, FS651V, FX691V, FX730V, FX801V, FX850V, FXT00V. The full list of specification numbers is published on the Kawasaki product-recall page (linked below). ## Issue The **21066-0785 voltage regulator** in the recalled Kawasaki engines can fail thermally. When the voltage regulator fails, the engine overheats and can ignite. Critically, **the failure can occur while the equipment is in storage** — not just during operation. Owners cannot rely on simply parking the mower as a workaround. A widely-shared mitigation among owners while waiting for the dealer repair is to **disconnect the negative battery terminal** when the mower is not in use, since the voltage regulator's failure mode involves continued current flow. Reported field incidents at time of recall (US): - 8 reports of fires - 0 injuries ## What to do 1. Find your engine model and serial number on the engine fan housing of your ZTX-6. 2. Check your engine model against the list above; if it's one of the eight covered models, also confirm the specification number against Kawasaki's published list at https://kawasakienginesusa.com/support-resources/product-recall. 3. If your mower is in scope, **stop using it immediately** and store it away from combustible materials. Consider disconnecting the battery's negative terminal as an additional precaution. 4. Contact Cub Cadet at (888) 848-6038, Monday-Friday 8 a.m. - 6 p.m. ET. Or visit https://www.cubcadet.com/en_US/product-recalls.html. 5. You may also contact Kawasaki Motors USA directly at (866) 836-4463. ## Related bulletins Sibling bulletins for the same CPSC 24-256 recall covering other brands in the TractorNuity library: - **TNB02600026** — John Deere Z760R portion - **TNB02600027** — Kubota Z726XKW portion - **TNB02600031** — Bad Boy Rebel / Revolt / Rogue portion Other affected brands (BigDog, Bobcat, Hustler) are not currently in the TractorNuity library; if added in the future, sibling bulletins should be created for each. ## Hazard Severity is rated **critical** because of the fire risk, including the in-storage failure mode that can ignite without operator presence. ## Source - U.S. Consumer Product Safety Commission, recall 24-256, "Kawasaki Motors USA Recalls Engines Used in Bad Boy Mowers, BigDog, Bobcat, Cub Cadet, Hustler, John Deere and Kubota Brand Lawn and Garden Equipment Due to Fire and Burn Hazards," June 6, 2024. - Cub Cadet product recalls page: https://www.cubcadet.com/en_US/product-recalls.html - Kawasaki product recall page: https://kawasakienginesusa.com/support-resources/product-recall/product-recall-24-256 ## Library notes The ZTX-6 row family is added in this same migration with three deck variants (54, 60, 72). The Cub Cadet manufacturer entry already existed but had no zero-turn model rows prior to this migration.