MBK Booster
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| Manufacturer | Yamaha |
|---|---|
| Also called | BWs, MBK Booster |
| Production | 2002-2005, 2008-2009 |
| Class | Scooter |
| Engine | Horizontal Minarelli 49 cc air-cooled (in 2011 Yamaha introduced a 125 cc engine to the Zuma model), carbureted two-stroke, electronic ignition Bore x stroke: 40.0 mm x 39.2 mm Compression ratio: 7.0:1 |
| Top speed | 42 mph (68 km/h) |
| Transmission | V-belt automatic |
| Suspension | Front: Telescopic fork Rear: Single shock |
| Brakes | Front: 115mm disc Rear: drum |
| Tires | Front: 120/90-10 Rear 130/90-10 |
| Wheelbase | 50.2 in (1,275 mm) |
| Dimensions |
L: 74.4 in (1,890 mm) W: 27.8 in (706 mm) H: 43.7 in (1,110 mm) |
| Seat height | 30.1 in (765 mm) |
| Fuel capacity | 1.5 US gallons (5.7 l) |
| Fuel consumption | 123 mpg‑US (1.91 L/100 km) |
| Related | Yamaha Zuma 125 |
| Production | 1989-2001 |
|---|---|
| Engine | Vertical Minarelli 49 cc air-cooled, carbureted 2-stroke, electronic ignition Bore x stroke: 40.0 mm x 39.2 mm Compression ratio: 7.0:1 |
| Top speed | 40 mph (64 km/h) |
| Transmission | V-belt automatic |
| Suspension | Front: Telescopic fork Rear: Single shock |
| Brakes | Front: 155mm disc;drum on earlier models Rear: drum |
| Tires | Front: 125/90-10 Rear 125/90-10 |
| Wheelbase | 50.2 in (1,275 mm) |
| Dimensions |
L: 68.3 in (1,735 mm) W: 24.8 in (630 mm) H: 41.5 in (1,054 mm) |
| Seat height | 29.3 in (744 mm) |
| Weight | 159 lb (72 kg) (dry) |
| Fuel capacity | 1.1 US gallons (4.2 l) |
The Zuma is an air-cooled 49 cc two-stroke scooter made by Yamaha Motor Company. It is also marketed as the Yamaha BWs, and the MBK Booster.
Yamaha numbers its scooter models according to their make (in the case of the Zuma, all models manufacturered after 2002, have model numbers begin with the letters YW), 1989-1990, as well as 1997-2002 models were known as "CW" models. 2002+ begin with "YW" followed by the engine size (given in approximate cubic centimeters— the Zuma's usual 49 cc 1.7 hp engine is assigned the number 50) and the year in which the vehicle was made, given as either a one or two letter designation and increasing by one "letter category" each full year, with an optional letter placed either before or after the year letter category and considered an amendment code. For example, the letter designation for the year 2002 for the Zuma was the letter P, so a Zuma manufactured in 2002 would have the designation YW50P. However, Yamaha made some changes to the model during its year run, so some Zumas manufactured in 2002 have the model code YW50AP to distinguish them from the YW50P model. All YW50P Zumas are identical in construction design to all other YW50P Zumas but will differ (in this particular instance, only slightly) from a YW50AP. Yamaha did not use the letter Q, and the letter for 2003 is the letter R (only one model for this year, the YW50R). For 2004, the letter S (the YW50S model). In 2008, assigned the letter X, Yamaha had two models: the YW50XL and the YW50XB. And so on. In 2011 the numbering system moved to the letter A (YW125AB for the 125 CC model and YW50AL for the 49 CC model).
The Zuma has a 14 mm Teikei carburetor with automatic choke, reed-valve induction, a fan-assisted cooling system, an autolube oil-injection system with an indicator light located on instrument panel which alerts rider when oil level gets low, and electric starting with backup kick start.
It also has five spoke-cast wheels with low-profile 120/90-10 front and 130/90-10 rear tires. The front fork has 2.6 inches (66 mm) of travel, and rear shock has 2.4 inches (61 mm) of travel. The scooter also has 155 mm hydraulic front disc brakes and rear drum brakes. (Models until 1998 had front drum brake instead of a hydraulic one.)
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Wikipedia