What causes Carb-era PAIR valve causes popping on decel on the Honda Cbr 600f4i?

Listen for backfire, inspect PAIR valve block-off Estimated fix cost: $20-$60

What causes Fork seals leak from age and neglect on the Honda Cbr 600f4i?

Look for oil residue on lower fork legs Estimated fix cost: $100-$200

Squeeze hoses for cracks, check coolant reservoir level Estimated fix cost: $40-$80

Check voltage at idle and rev, should hit 14V Estimated fix cost: $80-$150

Known issues to inspect before buying a used Honda Cbr 600f4i. What to check and how much repairs cost.

SERIOUS

Check voltage at idle and rev, should hit 14V

Fix cost: $80-$150

MINOR

Listen for backfire, inspect PAIR valve block-off

Fix cost: $20-$60

MODERATE

Look for oil residue on lower fork legs

Fix cost: $100-$200

MODERATE

Squeeze hoses for cracks, check coolant reservoir level

Fix cost: $40-$80

☐Check for stator/regulator charging voltage output

☐Inspect fairings for crash damage and cracks

☐Verify coolant is clean, not rusty or milky

☐Test clutch engagement and gear shifting smoothness

Solid, reliable sportbike if maintained properly