compression ratio YAMAHA MT-01 2009 Owners Manual

INSTRUMENT AND CONTROL FUNCTIONS
3-18
3To increase the spring preload and
thereby hardening it, turn the ad-
justing bolt in direction (a) from the
standard setting, making sure to
turn the bolt complete turns so that
the alignment marks match.
To decrease the spring preload
and thereby softening it, turn the
adjusting bolt in direction (b) from
the standard setting, making sure
to turn the bolt complete turns so
that the alignment marks match.
TIPDue to small differences in production,
the positions of the alignment marks on
the front fork caps may not exactly
match the illustrations.
Rebound damping force
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting bolt on each fork
leg in direction (a). To decrease the re-
bound damping force and thereby soft-
en the rebound damping, turn the
adjusting bolt on each fork leg in direc-
tion (b).Compression damping force
To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting bolt on
each fork leg in direction (a). To de-
crease the compression damping force
and thereby soften the compression
damping, turn the adjusting bolt on
each fork leg in direction (b).
Spring preload setting:
Minimum (soft):
7 complete turns in direction (b)
from the standard setting
Standard:
See explanations above.
Maximum (hard):
6 complete turns in direction (a)
from the standard setting
1. Rebound damping force adjusting boltRebound damping setting:
Minimum (soft):
17 click(s) in direction (b)*
Standard:
10 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)1
(b)
(a)
1. Compression damping force adjusting boltCompression damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
10 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)
(b)(a)
1
U5YUE5E0.book Page 18 Tuesday, March 17, 2009 9:02 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
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.
U5YUE5E0.book Page 33 Tuesday, March 17, 2009 9:02 AM

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:
265.0 kg (584 lb)Engine:Engine type:
Air cooled 4-stroke, OHV
Cylinder arrangement:
V-type 2-cylinder
Displacement:
1670 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:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 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:
3.70 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 injection:Throttle body:
ID mark:
5YU1 02Spark 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)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U5YUE5E0.book Page 1 Tuesday, March 17, 2009 9:02 AM