The 2023 Kawasaki Ninja ZX-4 has two recalls, both involving engine defects that can cause the motorcycle to stall without warning while riding, raising the risk of a crash.
One issue involves spark plugs that may have been damaged during production, causing an unstable idle, hesitation, or sudden power loss. The other involves an alternator rotor bolt that may not have been properly tightened, allowing the rotor to work loose and cut engine power while the bike is in motion.
At a glance
What can fail
Spark plugs may have been damaged during production, causing unstable idle, engine hesitation, or stalling.
What the fix does
Kawasaki will mail you instructions to visit a dealership, where technicians will replace the spark plugs.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
The bolt securing the alternator rotor may not be tight enough, allowing the rotor to loosen and cause the engine to stall while you're riding.
What the fix does
Kawasaki will mail you instructions to visit a dealership, where the alternator rotor bolt will be inspected and re-tightened.
Summarized — see the official notice for exact wording, dates, and contacts.
