compression ratio YAMAHA SCR950 2017 Owners Manual

Periodic maintenance an d a djustment
6-34
6
a jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU25853
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 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
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
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.
UBL3E0E0.book Page 34 Tuesday, November 15, 2016 2:38 PM

Specifications
8-1
8
Dimensions:Overall length:2255 mm (88.8 in)
Overall width:
895 mm (35.2 in)
Overall height: 1170 mm (46.1 in)
Seat height: 830 mm (32.7 in)
Wheelbase:
1575 mm (62.0 in)
Ground clearance: 145 mm (5.71 in)
Minimum turning radius: 3.3 m (10.83 ft)Wei ght:Curb weight:
252 kg (556 lb)Engine:Combustion cycle:
4-stroke
Cooling system: Air cooled
Valve train: SOHC
Cylinder arrangement:
V-type
Number of cylinders: 2-cylinder
Displacement: 942 cm³
Bore × stroke:
85.0 × 83.0 mm (3.35 × 3.27 in) Compression ratio:
9.0 : 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:
3.70 L (3.91 US qt, 3.26 Imp.qt)
With oil filter removal: 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 (Gasohol [E10]
acceptable)
Fuel tank capacity: 13 L (3.4 US gal, 2.9 Imp.gal)
Fuel reserve amount:
2.8 L (0.74 US gal, 0.62 Imp.gal)Fuel injection:Throttle body:ID mark:BS54 00
Spark plu g(s):Manufacturer/model:
NGK/CPR7EA-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, multiple-discDrivetrain:Primary reduction ratio:1.674 (72/43)
Final drive: Belt
Secondary reduction ratio:
2.333 (70/30)
Transmission type: Constant mesh 5-speed
Gear ratio: 1st:3.067 (46/15)
2nd: 2.063 (33/16)
3rd:
1.579 (30/19)
4th: 1.259 (34/27)
5th: 1.042 (25/24)Chassis:Frame type: Double cradle
Caster angle: 29.0 °
UBL3E0E0.book Page 1 Tuesday, November 15, 2016 2:38 PM