compression ratio YAMAHA TTR90 2007 Owners Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
WARNING
EWA10660
After adjusting the brake pedal free
play, check the operation of thebrake light.
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.
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SPECIFICATIONS
8-1
8
Dimensions:Overall length:
TT-R90 1525 mm (60.0 in)
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)
(NZL)(PRT)(SWE)(ZAF)
TT-R90 1550 mm (61.0 in) (CAN)
TT-R90E 1525 mm (60.0 in)
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)
(NZL)(PRT)(SWE)(ZAF)
TT-R90E 1550 mm (61.0 in) (CAN)
Overall width:
605 mm (23.8 in)
Overall height:
865 mm (34.1 in)
Seat height:
625 mm (24.6 in)
Wheelbase:
1040 mm (40.9 in)
Ground clearance:
TT-R90 160 mm (6.30 in) (CAN)
TT-R90 172 mm (6.77 in)
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)
(NZL)(PRT)(SWE)(ZAF)
TT-R90E 160 mm (6.30 in) (CAN)
TT-R90E 172 mm (6.77 in)
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)
(NZL)(PRT)(SWE)(ZAF)
Minimum turning radius:
1300 mm (51.2 in)
Weight:With oil and fuel:
TT-R90 64.0 kg (141 lb)
TT-R90E 67.0 kg (148 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
89.0 cm³ (5.43 cu.in)
Bore × stroke:
47.0 × 51.8 mm (1.85 × 2.04 in)
Compression ratio:
8.50 :1
Starting system:
TT-R90 Kickstarter
TT-R90E Electric starter and kickstarter
Lubrication system:
Wet sumpEngine oil:Type:
TT-R90 SAE10W30 or SAE10W40 or
SAE15W40 or SAE20W40 or SAE20W50
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)
(NZL)(PRT)(SWE)(ZAF)
TT-R90 YAMALUBE 4, SAE10W30 or
SAE20W40 (CAN)
TT-R90E SAE10W30 or SAE10W40 or
SAE15W40 or SAE20W40 or SAE20W50
(AUS)(AUT)(BEL)(CHE)(DEU)(DNK)(ESP
)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(NZL)(PRT)(SWE)(ZAF)
TT-R90E YAMALUBE 4, SAE10W30 or
SAE20W40 (CAN)
Recommended engine oil grade:
API service SE, SF, SG type or higher
Engine oil quantity:
Periodic oil change:
0.80 L (0.85 US qt) (0.70 Imp.qt)
Air filter:Air filter element:
Wet element
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40
10° 30° 50° 70° 90°
110°
0°
130°F
YAMALUBE 4 (10W30)
or SAE 10W30
YAMALUBE 4 (20W40)
or SAE 20W40
–10° 0° 10° 20° 30°
40° –20°
50°C
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