What causes Throttle bodies need synchronization over time on the Honda Cb 500f?

Rough idle, hesitation, uneven power delivery between cylinders Estimated fix cost: $80-$150

What causes Fork seals leak on higher mileage bikes on the Honda Cb 500f?

Oil residue on fork tubes, soft front suspension feel Estimated fix cost: $150-$300

Metallic rattling noise first few seconds after startup Estimated fix cost: $50-$150

Weak battery, voltage reading below 13.5V at idle Estimated fix cost: $100-$200

Known issues to inspect before buying a used Honda Cb 500f. What to check and how much repairs cost.

MODERATE

Rough idle, hesitation, uneven power delivery between cylinders

Fix cost: $80-$150

SERIOUS

Weak battery, voltage reading below 13.5V at idle

Fix cost: $100-$200

MODERATE

Oil residue on fork tubes, soft front suspension feel

Fix cost: $150-$300

MODERATE

Metallic rattling noise first few seconds after startup

Fix cost: $50-$150

☐Check for crash damage on fairings and frame

☐Test ride cold start for strange noises

☐Verify service history and valve clearances done

☐Inspect chain, sprockets, and brake pad thickness

Solid reliable beginner bike, minor maintenance expected