PERIODIC MAINTENANCE AND MINOR REPAIR
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6. Install the panel.
EAU25860
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
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SPECIFICATIONS
EAU2633J
Dimensions:
Overall length:
1855 mm (73.0 in)
Overall width:
685 mm (27.0 in)
Overall height:
1130 mm (44.5 in)
Seat height:
785 mm (30.9 in)
Wheelbase:
1295 mm (51.0 in)
Ground clearance:
115 mm (4.53 in)
Minimum turning radius:
1900 mm (74.8 in)
Weight:
With oil and fuel:
120.0 kg (265 lb)
Engine:
Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
125.0 cm
3
Bore
×
stroke:
52.4
×
57.9 mm (2.06
×
2.28 in)
Compression ratio:
10.00 :1
Starting system:
Electric starter and kickstarterLubrication system:
Wet sump
Engine oil:
Type:
SAE20W40
Recommended engine oil grade:
API service SG type or higher, JASO stan-
dard MA
Engine oil quantity:
Periodic oil change:
0.90 L (0.95 US qt) (0.79 Imp.qt)
Final transmission oil:
Type:
SAE10W30 type SE motor oil
Quantity:
0.11 L (0.12 US qt) (0.10 Imp.qt)
Air filter:
Air filter element:
Oil-coated paper element
Fuel:
Recommended fuel:
Regular unleaded gasoline onlyFuel tank capacity:
7.4 L (1.96 US gal) (1.63 Imp.gal)
Fuel injector:
Manufacturer:
AISAN
Model/quantity:
4P91 01 / 1
Spark plug (s):
Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:
Dry, centrifugal automatic
Transmission:
Primary reduction system:
Helical gear
Primary reduction ratio:
38/13 (2.923)
Secondary reduction system:
Helical gear
Secondary reduction ratio:
40/12 (3.333)
Transmission type:
V-belt automatic
Operation:
Centrifugal automatic type
Chassis:
Frame type:
Steel tube backbone
Caster angle:
27.00 °
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40
