compression ratio YAMAHA YZF-R1 2009 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-39
6
EAU25662
To install the rear wheel
1. Install the wheel and the brake cal-
iper bracket by inserting the wheel
axle from the left-hand side.TIP

Be sure to insert the retainer on the
brake caliper bracket into the slot
in the swingarm.


Make sure that there is enough
space between the brake pads be-fore installing the wheel.2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground, and then put the sidestand
down.
4. Adjust the drive chain slack. (See
page 6-24.)
5. Tighten the axle nut to the speci-
fied torque.
EAU25871
Troubleshooting Although Yamaha motorcycles 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 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 inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
1. Wheel axle
1
1. Retainer
2. Slot
Tightening torque:
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
2
1
U14BE0E0.book Page 39 Friday, November 21, 2008 9:23 AM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2070 mm (81.5 in)
Overall width:
715 mm (28.1 in)
Overall height:
1130 mm (44.5 in)
Seat height:
835 mm (32.9 in)
Wheelbase:
1415 mm (55.7 in)
Ground clearance:
135 mm (5.31 in)
Minimum turning radius:
3500 mm (137.8 in)Weight:With oil and fuel:
206.0 kg (454 lb)Engine:Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined parallel 4-cylinder
Displacement:
998.0 cm³
Bore × stroke:
78.0 × 52.2 mm (3.07 × 2.06 in)
Compression ratio:
12.70 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 10W-40, SAE 10W-50, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter cartridge replacement:
3.73 L (3.94 US qt, 3.28 Imp.qt)
With oil filter cartridge replacement:
3.93 L (4.15 US qt, 3.46 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
2.73 L (2.89 US qt, 2.40 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
18.0 L (4.76 US gal, 3.96 Imp.gal)
Fuel reserve amount:
3.1 L (0.82 US gal, 0.68 Imp.gal)Fuel injection:Throttle body:
Type/quantity:
45EIDW/1
Spark plug (s):Manufacturer/model:
NGK/LMAR9E-J
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
65/43 (1.512)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
47/17 (2.765)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
Gear ratio:
1st:
38/15 (2.533)
2nd:
33/16 (2.063)
3rd:
37/21 (1.762)
4th:
35/23 (1.522)
5th:
30/22 (1.364)
6th:
33/26 (1.269)
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