GIVE SAFETY THE RIGHT OF WAY
1Scooters are fascinating vehicles, which can give you an unsurpassed feeling of power and freedom. However,
they also impose certain limits, which you must accept; even the best scooter does not ignore the laws of
physics.
Regular care and maintenance are essential for preserving value and operating condition of your scooter.
Moreover, what is true for the scooter is also true for the rider: good performance depends on being in good
shape. Riding under the influence of medication, drugs and alcohol is, of course, out of the question. Scooter
riders—more than car drivers—must always be at their mental and physical best. Under the influence of
even small amounts of alcohol, there is a tendency to take dangerous risks.
Protective clothing is as essential for the scooter rider as seat belts are for car drivers and passengers.
Always wear a complete scooter suit (whether made of leather or tear-resistant synthetic materials with
protectors), sturdy boots, scooter gloves and a properly fitting helmet. Optimum protective wear, however,
should not encourage carelessness. Although full-coverage helmets and suits, in particular, create an illu-
sion of total safety and protection, motorcyclists will always be vulnerable. Riders who lack critical self-
control run the risk of going too fast and are apt to take chances. This is even more dangerous in wet weather.
The good motorcyclist rides safely, predictably and defensively — avoiding all dangers, including those
caused by others.
Enjoy your ride!
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PERIODIC MAINTENANCE AND MINOR REPAIR
6
• Check tread depth and for damage.
9 * Tires• Replace if necessary.
√√√√ √
• Check air pressure.
• Correct if necessary.
10 * Wheel bearings• Check bearing for looseness or damage.√√√√
11 * Steering bearings• Check bearing play and steering for roughness.√√√√√• Lubricate with lithium-soap-based grease. Every 24,000 km
12 * Chassis fasteners• Make sure that all nuts, bolts and screws are
√√√√ √
properly tightened.
13 Centerstand• Check operation.
√√√√ √
• Lubricate.
14 * Front fork• Check operation and for oil leakage.√√√√
15 * Shock absorber assembly• Check operation and shock absorber for oil leakage.√√√√
16 * Carburetor• Check starter (chocke) operation.
√√√√√ √
• Adjust engine idling speed.
17 * Autolube pump• Check operation.
√√√√
• Bleed if necessary.
18 Final transmission oil• Check vehicle for oil leakage.√√ √• Change.√√√
19 * V-belt• Replace. Every 10,000 km
20 * Front and rear brake
• Check operation.√√√√√ √
switches
ODOMETER READING (x 1,000 km)
NO. ITEMCHECK OR MAINTENANCE JOB
1
ANNUAL
CHECK
6121824
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SPECIFICATIONS
8
Specifications
Model YQ50
Dimensions:
Overall length 1.743 mm
Overall width 690 mm
Overall height 1.170 mm
Seat height 828 mm
Wheelbase 1.256 mm
Minimum ground clearance 185 mm
Minimum turning radius 1.800 mm
Basic weight:97 kg
(with oil and full fuel tank)
Engine:
Engine type Liquid cooled, 2 stroke
Cylinder arrangement Single cylinder, horizontal
Displacement 49.2 cc
Bore x stroke 40.0 x 39.2
Compression ratio 7.44:1
Starting system Electric and kick starter
Lubrication systemSeparate lubrication (Autolube)
Engine oil:
Type Yamalube 2
or 2 stroke engine oil
Recommended engine oil Jaso FC
classification or ISO EG-C, EG-D
Capacity 1.3 LFinal transmission oil:
Type SAE 10W30 type SE
Quantity 0.13L
Cooling system capacity:1.2L
(total amount)
Air filter type:Wet type element
Fuel:
Recommended fuel Regular unleaded gasoline
(RON 91 mini)
Fuel tank capacity 7L
Carburetor:
Manufacturer DELL'ORTO
Model/quantity PHBN 12HS x1
Spark plug:
Manufacturer/Model NGK / BR8HS
Spark plug gap 0.5—0.7 mm
Clutch type:Dry, centrifugal automatic
Transmission:
Primary reduction system Helical gear
Primary reduction ratio 52/13 (4.000)
Secondary reduction system Spur gear
Secondary reduction ratio 43/14 (3.071)
Transmission type V-belt automatic
Operation Centrifugal automatic type
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