# Yamaha Motor Corporation, USA: Loose Camshaft Bolt May Cause Engine Failure (25V778000)

**Recall Urgency Score:** 60/100

| Field | Value |
|---|---|
| Manufacturer | Yamaha Motor Corporation, USA |
| Subject | Loose Camshaft Bolt May Cause Engine Failure |
| NHTSA ID | 25V778000 |
| Manufacturer campaign | 990184 |
| Recall type | Vehicle |
| Component | ENGINE AND ENGINE COOLING |
| Units potentially affected | 2715 |
| Do not drive | Yes |
| Park outside | No |
| Defect | Yamaha Motor Company, Ltd. (Yamaha) is recalling certain 2018-2022 XMAX scooters. The camshaft retainer bolt may loosen and not properly secure the camshaft, resulting in an engine stall. |
| Consequence | An engine stall can cause a loss of control, increasing the risk of a crash or injury. |
| Remedy | Owners are advised not to ride their scooter until the remedy has been completed.  Dealers will install a new camshaft plate kit, free of charge. Owner notification letters are expected to be mailed November 20, 2025.  Owners may contact Yamaha's customer service at 1-800-962-7926.  Yamaha's number for this recall is 990184. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 24, 2025. |

## Why this score
- NHTSA do-not-drive warning.
- 2,715 units affected.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) recalls, via data.transportation.gov (https://www.nhtsa.gov/recalls?nhtsaId=25V778000). Last refreshed: 2026-11-05T20:38:41.891Z.
Recall data comes from NHTSA and is summarized automatically; check the official notice and VIN lookup before acting. Informational only.