compression ratio YAMAHA MT-01 2007 Owners Manual

INSTRUMENT AND CONTROL FUNCTIONS
3-17
3
EAU36752
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing nut, a rebound damping force ad-
justing knob and a compression
damping force adjusting screw.CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum orminimum settings.
Spring preload
Adjust the spring preload as follows.
1. Loosen the locknut.2. To increase the spring preload and
thereby harden the suspension,
turn the adjusting nut in direction
(a). To decrease the spring pre-
load and thereby soften the sus-
pension, turn the adjusting nut in
direction (b).
NOTE:

Use the special wrench included in
the owner’s tool kit to make the ad-
justment.


The spring preload setting is deter-
mined by measuring distance A,
shown in the illustration. The long-
er distance A is, the lower thespring preload; the shorter dis-
tance A is, the higher the spring
preload.
3. Tighten the locknut to the specified
torque.
1. Locknut
2. Spring preload adjusting nut
1. Special wrench
1. Distance A
Spring preload:
Minimum (soft):
Distance A = 155.0 mm (6.10 in)
Standard:
Distance A = 150.0 mm (5.91 in)
Maximum (hard):
Distance A = 145.0 mm (5.71 in)
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
U5YUE2E0.book Page 17 Tuesday, September 12, 2006 5:02 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6a jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU25850
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.
U5YUE2E0.book Page 32 Tuesday, September 12, 2006 5:02 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2185 mm (86.0 in)
Overall width:
800 mm (31.5 in)
Overall height:
1105 mm (43.5 in)
Seat height:
825 mm (32.5 in)
Wheelbase:
1525 mm (60.0 in)
Ground clearance:
145 mm (5.71 in)
Minimum turning radius:
3200 mm (126.0 in)Weight:With oil and fuel:
262.0 kg (578 lb)Engine:Engine type:
Air cooled 4-stroke, OHV
Cylinder arrangement:
V-type 2-cylinder
Displacement:
1670.0 cm³
Bore × stroke:
97.0 × 113.0 mm (3.82 × 4.45 in)
Compression ratio:
8.40 :1
Starting system:
Electric starter
Lubrication system:
Dry sump
Engine oil:Type:
SAE20W40
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:
4.10 L (4.33 US qt) (3.61 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
15.0 L (3.96 US gal) (3.30 Imp.gal)
Fuel reserve amount:
3.0 L (0.79 US gal) (0.66 Imp.gal)Fuel injector:Manufacturer:
NIPPON INJECTOR
Model/quantity:
INP-101/2Spark plug (s):Manufacturer/model:
NGK/DPR7EA-9
Manufacturer/model:
DENSO/X22EPR-U9
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:
71/48 (1.479)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
39/17 (2.294)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
38/16 (2.375)
2nd:
30/19 (1.579)
3rd:
29/25 (1.160)
4th:
24/25 (0.960)
5th:
24/30 (0.800)Chassis:Frame type:
Double cradle
Caster angle:
25.00 °
Trail:
103.0 mm (4.06 in)
U5YUE2E0.book Page 1 Tuesday, September 12, 2006 5:02 PM