What causes Stator/charging system failure on the Suzuki Gsx-s125?

Battery voltage at idle, dim lights, hard starting Estimated fix cost: $150-$300

What causes Throttle body clogging from ethanol fuel on the Suzuki Gsx-s125?

Rough idle, hesitation, poor low-rpm response Estimated fix cost: $50-$120

Rattling on cold start, listen at engine top end Estimated fix cost: $80-$200

Oil residue on fork tubes, soft front suspension Estimated fix cost: $60-$150

Known issues to inspect before buying a used Suzuki Gsx-s125. What to check and how much repairs cost.

SERIOUS

Battery voltage at idle, dim lights, hard starting

Fix cost: $150-$300

MODERATE

Rough idle, hesitation, poor low-rpm response

Fix cost: $50-$120

MODERATE

Rattling on cold start, listen at engine top end

Fix cost: $80-$200

MINOR

Oil residue on fork tubes, soft front suspension

Fix cost: $60-$150

☐Check for stator recall or replacement history

☐Cold start the bike, listen for rattles

☐Inspect fork tubes for oil seepage

☐Review service history, especially valve clearances

Generally solid, neglect causes most issues