Periodic maintenance an d a djustment
7-30
7
TIP
Make sure the slot in the brake caliper
bracket is fit over the retainer on the
swingarm.
3. Install the drive chain onto the rear
sprocket.
4. Install the washer and axle nut.
5. Adjust the drive chain slack. (See page 7-21.)
EAU25872
Trou bleshootin g
Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, do
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot li ghts from water
heaters or furnaces. Gasoline or
g asoline vapors can i gnite or ex-
plo de, causin g severe injury or prop-
erty damag e.
1. Retainer
2. Slot
1
2
UBR880E0.book Page 30 Friday, February 16, 2018 8:32 AM
Specifications
9-1
9
Dimensions:
Overall length:1615 mm (63.6 in)
Overall width:
760 mm (29.9 in)
Overall height: 1000 mm (39.4 in)
Seat height: 755 mm (29.7 in)
Wheelbase:
1140 mm (44.9 in)
Ground clearance: 265 mm (10.43 in)
Wei ght:
Curb weight:
61 kg (134 lb)
Maximum rider weight:
50.0 kg (110 lb)
ng ine:
Combustion cycle:
2-stroke
Cooling system:
Liquid cooled
Number of cylinders: Single cylinder
Displacement: 65 cm³
Bore × stroke:
43.5 × 43.6 mm (1.71 × 1.72 in)
Compression ratio: 8.1–9.6 : 1
Starting system: Kickstarter
Lubrication system:
Premix lubrication
Engine oil:
Engine oil:
YAMALUBE 2R
Recommended brand:
YAMALUBE
Transmission oil:
Type: Motor oil SAE 10W-30 type SE or higher or
Gear oil SAE 85W GL-3
Quantity: 0.50 L (0.53 US qt, 0.44 Imp.qt)
Coolant quantity:
Radiator (including all routes):0.38 L (0.40 US qt, 0.33 Imp.qt)
Air filter:
Air filter element:Wet element
Fuel:
Recommended fuel:Premium unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity: 3.5 L (0.9 US gal, 0.8 Imp.gal)
Car buretor:
Type × quantity:
PWK28 × 1
Spark plu g(s):
Manufacturer/model:
NGK/BR9ECM
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:Wet, multiple-disc
Drivetrain:
Primary reduction ratio:
3.611 (65/18)
Final drive: Chain
Secondary reduction ratio: 3.357 (47/14)
Transmission type:
Constant mesh 6-speed
Gear ratio: 1st:
2.455 (27/11)
2nd: 1.882 (32/17)
3rd: 1.529 (26/17)
4th:
1.263 (24/19)
5th: 1.095 (23/21)
6th: 0.960 (24/25)
Chassis:
Frame type:Semi double cradle
Caster angle: 26.4 °
Trail:
64 mm (2.5 in)
UBR880E0.book Page 1 Friday, February 16, 2018 8:32 AM
