Comparison of Yamaha Why 2010 and Yamaha Why 2009 [S]ave
| Attribute |  Yamaha Why 2010 × |  Yamaha Why 2009 × |
|---|---|---|
| General | ||
| Production from (year) | 2010 | 2009 |
| Make | Yamaha | Yamaha |
| Model | Yamaha Why | Yamaha Why |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | - | Carburettor |
| Displacement (cm³) | 49.2 | 49.2 |
| Power (kw) | 2.4 | 2.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Belt | Belt |
| Torque (Nm) | 3.5 | 3.5 |
| Bore (mm) | 40 | 40 |
| Stroke (mm) | 39.2 | 39.2 |
| Gearbox | Automatic | Automatic |
| Ignition | CDI | CDI |
| Lubrication system | Separate lubrication | Separate lubrication |
| Compression | 7.3:1 | 7.3:1 |
| Chassis | ||
| Front suspension | Telescopic fork | Telescopic fork |
| Rear suspension | Unit swing | Unit swing |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 110 | 110 |
| Front tyre | 70/90-16 | 70/90-16 |
| Rear tyre | 80/90-16 | 80/90-16 |
| Front wheel travel (mm) | 80 | 80 |
| Rear wheel travel (mm) | 70 | 70 |
| Other | ||
| Starter | Electric & kick | Electric & kick |
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 1,294 | 1,294 |
| Kerb weight (kg) | 78 | 78 |
| Overall height (mm) | 1,105 | 1,105 |
| Overall length (mm) | 1,940 | 1,940 |
| Overall width (mm) | 685 | 685 |
| Seat height (mm) | 765 | 765 |
| Ground clearance (mm) | 125 | 125 |
| Performance | ||
| Fuel capacity (l) | 7 | 7 |
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