Recall 23V515 covers 991 2023 Kawasaki ZX400 motorcycles for a loose alternator rotor bolt that can stall the engine. Free repair at franchised Kawasaki dealers.
Kawasaki is recalling 991 2023 ZX400 motorcycles under recall 23V515 because a loose connection between the alternator rotor and crank shaft can make the alternator fail and stall the engine. An engine stall increases crash risk, and the Kawasaki dealer repair will be free once available.
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What's wrong?
The alternator rotor on the 2023 Kawasaki ZX400 is the flywheel part of the charging system. It spins with the crankshaft, and that motion lets the alternator generate electricity for the motorcycle's ignition, fuel system, lights, and battery charging. The rotor has to stay tightly fixed to the crankshaft so the charging system keeps working while the engine runs.
On affected motorcycles, an installation error left the connection between the alternator rotor and crankshaft loose. The issue involves the alternator rotor bolt, which is supposed to hold the rotor securely in place. If that connection loosens while riding, the alternator stops producing the electrical power the engine needs. The result is an engine stall.
There is no warning sign before failure. The rider should not expect a dashboard light, noise, or change in feel before the alternator quits and the engine stalls.
Who's affected?
| 2023 Kawasaki ZX400 | electrical system |
|---|---|
| Units affected | 991 |
Not every 2023 Kawasaki ZX400 motorcycle is on the list. Check your VIN to confirm whether your specific motorcycle is included.
What's the safety risk?
An engine stall can increase the risk of a crash because power loss leaves less control in traffic. There is no warning sign before failure, so treat any stall as a reason to stop in a safe place and contact a Kawasaki dealer. Repair will be free at any franchised Kawasaki dealer once available.
What should I do?
- Check your VIN to confirm your 2023 Kawasaki ZX400 is included in this recall.
- Use Kawasaki's owner letter if you received one, or ask Kawasaki customer service whether your VIN is ready for dealer service.
- Call a franchised Kawasaki dealer about the free rotor-bolt inspection and tightening that fixes the loose alternator rotor connection linked to engine stalling.
- Bring the recall notice if you have it. If not, reference recall number 23V515 when you call.
- Ride cautiously until a Kawasaki dealer confirms the rotor bolt is tight. If the engine stalls, move out of traffic when safe and stop riding.
What happens at the repair
At the dealer, a Kawasaki technician inspects the rotor bolt connection between the rotor and crankshaft and tightens the bolt if it needs adjustment. Recall 23V515 does not list the remedy status as available, so the dealer repair will be free once Kawasaki opens or confirms it for your VIN. Ask the Kawasaki service desk to check campaign 23V515 against your VIN before you schedule service.
Timeline
| July 26, 2023 | NHTSA published the recall |
|---|---|
| August 14, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V515?
Recall 23V515 covers 991 2023 Kawasaki ZX400 motorcycles with an alternator connection defect. A loose connection between the rotor and crank shaft can cause alternator failure and an engine stall, increasing crash risk. Kawasaki dealers will inspect and tighten the rotor bolt as needed for free.
What should I do if my 2023 Kawasaki ZX400 is on this recall?
Check your VIN to confirm your specific motorcycle is included in recall 23V515. If it is, contact a franchised Kawasaki dealer to schedule the alternator rotor bolt inspection and tightening. Reference recall 23V515 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the recalled defect at no cost, and Kawasaki says dealers will inspect and tighten the rotor bolt as needed free of charge. Kawasaki mailed owner notification letters on August 14, 2023.
What is the safety risk?
The safety risk is an engine stall while riding. The recall says the alternator can fail because of a loose rotor-to-crank-shaft connection, and an engine stall can increase the risk of a crash. Confirm your VIN, then arrange the free dealer inspection.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V515000 |
|---|---|
| Kawasaki customer service | 1-866-802-9381 |
| NHTSA recall # | 23V515 |
| NHTSA recall # (full) | 23V515000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
- Download Owner Notice (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →