Yamaha Zumaback 2007 forward

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Air cooled, 49cc, Single, 2-stroke, Reed valve

Power: 10.61 HP (7.8 kW) @ 6000 rpm
Final drive: Belt
Curb weight: 207.2 lbs
Category: Scooter
Tags: Scooter
Engine and transmission
Engine type: 1 cylinders, 2-stroke, Single
Displacement: 49 cc (2.99 cubic inches)
Bore × stroke: 1.57 inch × 1.54 inch (square)
Cooling system: Air cooled
Power: 10.61 HP (7.8 kW) @ 6000 rpm
Throttle: Cable operated
Valves
Valve train: Reed valve, variable
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Ignition type: Digital CDI
Funnel diameter: 0.55 inch
Compression: 7:1
Engine mounting: Flat
Gear box: Automatic, Variator clutch
Clutch: Wet, centrifugal clutch, cable operated
Final drive: Belt
Spark plug pipe type: NGK, BR8HS
Starter: Electric / Kick-starter
Dimensions
Physical measures
Length: 74.4 inch
Width: 27.8 inch
Height: 43.7 inch
Wheel base: 50.2 inch
Trail: 3.7 inch
Ground clearance: 4.72 inch
Seat height: 30.1 inch
Weight
Curb weight: 207.2 lbs
Dry weight: 185.2 lbs
Chassis and suspension
Frame type: steel, Backbone frame
Front
Suspension: Cartridge
Suspension travel: 2.09 inch
Brake: Single Disk, Ø6.1 inch
Tire: 120 / 90 R10 R
Tire pressure: 0.07 PSI
Rear
Suspension: mono shock, Mono arm
Suspension travel: 1.81 inch
Brake: Drum
Tire: 130 / 90 R10 R
Tire pressure: 0.09 PSI
Other
ABS available: No
Power-to-weight ratio: 0.08 KW/lbs (12.05 lbs/HP)
Fuel capacity: 1.5 gals
Number of riders: 1 person

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