What causes Carburetor clogging from ethanol fuel on the Sym Jet 14 125?

Cold start difficulty, rough idle, hesitation on throttle Estimated fix cost: $40-$80

What causes Rust in fuel tank on neglected bikes on the Sym Jet 14 125?

Brown fuel filter, fuel flow restriction, tank interior Estimated fix cost: $50-$150

Sluggish takeoff, high RPM before moving Estimated fix cost: $30-$60

Known issues to inspect before buying a used Sym Jet 14 125. What to check and how much repairs cost.

MODERATE

Cold start difficulty, rough idle, hesitation on throttle

Fix cost: $40-$80

MODERATE

Sluggish takeoff, high RPM before moving

Fix cost: $30-$60

SERIOUS

Brown fuel filter, fuel flow restriction, tank interior

Fix cost: $50-$150

☐Check service history and mileage

☐Test cold start and idle quality

☐Inspect brake pads and tyre wear

☐Listen for CVT belt slipping noise

Decent budget scooter, reliable if well maintained