What causes Camchain tensioner wear causing rattling noise on the Honda Cb125f?

Cold start rattle, disappears when warm means trouble Estimated fix cost: $80-$150

What causes Carburetor jets clogging from ethanol fuel on the Honda Cb125f?

Rough idle, hesitation on throttle, hard cold starts Estimated fix cost: $20-$60

Spongy or squealing rear brake, poor stopping power Estimated fix cost: $30-$70

Battery dies frequently, check charging voltage at revs Estimated fix cost: $40-$90

Known issues to inspect before buying a used Honda Cb125f. What to check and how much repairs cost.

MODERATE

Cold start rattle, disappears when warm means trouble

Fix cost: $80-$150

MINOR

Rough idle, hesitation on throttle, hard cold starts

Fix cost: $20-$60

MINOR

Spongy or squealing rear brake, poor stopping power

Fix cost: $30-$70

SERIOUS

Battery dies frequently, check charging voltage at revs

Fix cost: $40-$90

☐Cold start it, listen for top-end rattle

☐Check service history, especially valve clearances

☐Test all electrics and battery charging output

☐Inspect frame for crash damage or repairs

Very reliable commuter, low running costs overall