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Yamaha · Underbone

Yamaha Finn: repairs, problems and specs

The Finn is a 115 cc air-cooled underbone sold in Thailand and Indonesia. The engine is an SOHC single with a 50.0 x 57.9 mm bore and stroke, with a front disc brake on Thai versions.

Top repairsSpare parts →

Engine115 cc

Figures for the 115 cc. Other years and markets can differ; check your bike's manual.

Good to know

  • Indonesian claim of 96 km per litre
  • Thai claim up to 91.18 km per litre

Specifications

Engine typeair-cooled SOHC single
Brakesdisc front (Thai version)

For repairs: Power, weight and tank not found.

Top repairs for the Yamaha Finn

The jobs that keep a underbone bike like this safe and running, from rider checks to workshop jobs. These are routine maintenance and common checks for this type of bike, not a ranking of faults.

Check your version first. Confirm semi-automatic versus manual clutch, brake types, chain and sprocket dimensions. Use the values in your bike's manual.

Problems to check on the Yamaha Finn

Something else is wrong? Use the diagnostics tool →

More Yamaha bikes

All Yamaha bikes →

Other underbones and step-throughs

Sources

Repair and part links are general guides for this type of bike; exact fitment is not verified. Text CC BY-SA 4.0, Transitions Lab.