What causes Carburetor gumming from ethanol fuel sitting on the Honda Cb550?

Rough idle, stumbling, difficulty starting cold Estimated fix cost: $80-$200

What causes Charging system failure, worn brushes or stator on the Honda Cb550?

Battery dies, dim lights, voltage under 13V running Estimated fix cost: $100-$300

Metallic rattling on startup or at idle Estimated fix cost: $50-$150

Inspect inside tank with flashlight for rust flakes Estimated fix cost: $50-$250

Known issues to inspect before buying a used Honda Cb550. What to check and how much repairs cost.

MODERATE

Rough idle, stumbling, difficulty starting cold

Fix cost: $80-$200

SERIOUS

Battery dies, dim lights, voltage under 13V running

Fix cost: $100-$300

MODERATE

Metallic rattling on startup or at idle

Fix cost: $50-$150

MODERATE

Inspect inside tank with flashlight for rust flakes

Fix cost: $50-$250

☐Start cold, listen for unusual noises

☐Check all four cylinders fire evenly

☐Verify charging voltage with multimeter

☐Look for oil leaks around cam cover

Solid classic, easy to maintain with basic skills