What causes Cam chain tensioner rattle on cold start on the Kawasaki Z650?

Listen for ticking noise on cold startup at idle Estimated fix cost: $50-$150

What causes Stator and regulator rectifier failure on the Kawasaki Z650?

Check battery voltage at idle, look for burnt connectors Estimated fix cost: $150-$400

Idle fluctuation, hesitation between 3000-5000 RPM range Estimated fix cost: $50-$200

Oil streaks on fork legs below dust seals Estimated fix cost: $100-$250

Known issues to inspect before buying a used Kawasaki Z650. What to check and how much repairs cost.

MODERATE

Listen for ticking noise on cold startup at idle

Fix cost: $50-$150

SERIOUS

Check battery voltage at idle, look for burnt connectors

Fix cost: $150-$400

MINOR

Idle fluctuation, hesitation between 3000-5000 RPM range

Fix cost: $50-$200

MODERATE

Oil streaks on fork legs below dust seals

Fix cost: $100-$250

☐Check service history, especially valve clearances

☐Test ride cold, listen for top-end noises

☐Inspect frame for crash damage or welds

☐Verify charging system with multimeter test

Solid reliable bike, minor electrical issues only