compression ratio YAMAHA XVS950 2011 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6 a jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU25851
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 chart
represents a quick and easy procedure
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 waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
U26PE2E0.book Page 32 Thursday, May 13, 2010 5:38 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2435 mm (95.9 in)
Overall width:
1000 mm (39.4 in)
Overall height:
1080 mm (42.5 in)
Seat height:
675 mm (26.6 in)
Wheelbase:
1685 mm (66.3 in)
Ground clearance:
145 mm (5.71 in)
Minimum turning radius:
3500 mm (137.8 in)Weight:With oil and fuel:
278 kg (613 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
V-type 2-cylinder
Displacement:
942 cm³
Bore × stroke:
85.0 × 83.0 mm (3.35 × 3.27 in)
Compression ratio:
9.00 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter cartridge replacement:
3.70 L (3.91 US qt, 3.26 Imp.qt)
With oil filter cartridge replacement:
4.00 L (4.23 US qt, 3.52 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
17.0 L (4.49 US gal, 3.74 Imp.gal)Fuel reserve amount:
3.4 L (0.90 US gal, 0.75 Imp.gal)
Fuel injection:Throttle body:
ID mark:
5S71 00Spark plug(s):Manufacturer/model:
NGK/CPR7EA-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
72/43 (1.674)
Secondary reduction system:
Belt drive
Secondary reduction ratio:
70/30 (2.333)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
46/15 (3.067)
2nd:
33/16 (2.063)
3rd:
30/19 (1.579)
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U26PE2E0.book Page 1 Thursday, May 13, 2010 5:38 PM