compression ratio YAMAHA TRACER 900 2018 Owners Manual

Periodic maintenance an d a djustment
6-35
6
EAU58010
Replacin g the license plate
li g ht bul b1. Remove the license plate light unit
by removing the nuts and collars,
and then remove the license plate
light bulb socket (together with the
bulb) by pulling it out.
2. Remove the burnt-out bulb by pulling it out. 3. Insert a new bulb into the socket.
4. Install the socket (together with
the bulb) by pushing it in, and then
install the license plate light unit by
installing the collars and nuts.
EAU25872
Trou bleshootin gAlthough 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
1. License plate light unit
2. Collar
3. Nut
4. License plate light bulb socket
1
22
4
3
3
1. License plate light bulb
1
UB5CE0E0.book Page 35 Wednesday, December 20, 2017 11:08 AM

Specifications
8-1
8
Dimensions:Overall length:2160 mm (85.0 in)
Overall width:
850 mm (33.5 in)
Overall height: 1375/1430 mm (54.1/56.3 in)
Seat height: 850/865 mm (33.5/34.1 in)
Wheelbase:
1500 mm (59.1 in)
Ground clearance: 135 mm (5.31 in)
Minimum turning radius: 3.0 m (9.84 ft)Wei ght:Curb weight:
214 kg (472 lb)Engine:Combustion cycle:
4-stroke
Cooling system: Liquid cooled
Valve train: DOHC
Cylinder arrangement:
Inline
Number of cylinders: 3-cylinder
Displacement: 847 cm³
Bore × stroke:
78.0 × 59.1 mm (3.07 × 2.33 in) Compression ratio:
11.5 : 1
Starting system: Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
SAE viscosity grades:
10W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA
Engine oil quantity: Oil change:
2.40 L (2.54 US qt, 2.11 Imp.qt)
With oil filter removal: 2.70 L (2.85 US qt, 2.38 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes):
1.93 L (2.04 US qt, 1.70 Imp.qt)Air filter:Air filter element:Oil-coated paper elementFuel:Recommended fuel:Premium unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity: 18 L (4.8 US gal, 4.0 Imp.gal) Fuel reserve amount:
2.6 L (0.69 US gal, 0.57 Imp.gal)
Fuel injection:Throttle body:
ID mark:B901 00Spark plu g(s):Manufacturer/model:
NGK/CPR9EA9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, multiple-discDrivetrain:Primary reduction ratio:
1.681 (79/47)
Final drive: Chain
Secondary reduction ratio: 2.813 (45/16)
Transmission type:
Constant mesh 6-speed
Gear ratio: 1st:
2.667 (40/15)
2nd: 2.000 (38/19)
3rd: 1.619 (34/21)
4th:
1.381 (29/21)
5th: 1.190 (25/21)
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