fuel cap YAMAHA TTR90 2001 Owners Manual

1 - 1
GEN
INFO

DESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1
“ENGINE STOP” button
2
Front brake lever
3
Throttle grip
4
Fuel tank cap
5
Kick starter
6
Fuel tank
7
Air cleaner
8
Rear brake pedal
9
Fuel cock
0
Starter lever (choke)
A
Drive chain
B
Shift pedal
C
Front fork
NOTE:

l
The machine you have purchased may differ
slightly from those shown in the following.
l
Designs and specifications are subject to
change without notice.
1
1

1 - 11
GEN
INFO

CONTROL FUNCTIONS/FUEL
FUEL TANK CAP
Remove the fuel tank cap
1 by turning
counter-clockwise.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine.
FUEL
Use regular gasoline. Always use fresh, name
brand gasoline.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine. Do not fill the fuel
tank above the bottom of the filler tube 1
as shown in the illustration or it may over-
flow when the fuel heats up later and
expands.
aFuel level
Recommended fuel:
For USA:
Unleaded fuel
For CDN and EUROPE:
Rgular unleaded gasoline
For AUS:
Unleaded fuel only
For NZ:
Regular gasoline
Fuel tank capacity:
Total:
4.2 L (0.92 lmp gal, 1.11 US gal)
Reserve:
0.5 L (0.11 lmp gal, 0.13 US gal)

SPEC

2 - 2
Oil capacity:
Engine oil
Periodic oil change 0.8 L (0.70 Imp qt, 0.85 US qt)
Total amount 1.0 L (0.88 Imp qt, 1.06 US qt)
Air filter: Wet type element
Fuel:
Type Unleaded fuel (USA)
Premium unleaded gasoline (CDN, Europe)
Unleaded fuel only (AUS)
Regular gasoline (NZ)
Tank capacity 4.2 L (0.92 lmp gal, 1.11 US gal)
Reserve amount 0.5 L (0.11 Imp gal, 0.13 US gal)
Carburetor:
Type VM16SH
Manufacturer MIKUNI
Spark plug:
Type CR6HSA/U20FSR-U
Manufacturer NGK/DENSO
Gap 0.6 ~ 0.7 mm (0.02 ~ 0.03 in)
Clutch type: Wet, multiple-disc and centrifugal automatic
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 67/18 (3.722)
Secondary reduction system Chain drive
Secondary reduction ratio 35/14 (2.500)
Transmission type Constant mesh, 3-speed
Operation Left foot operation
Gear ratio: 1st 37/13 (2.846)
2nd 33/19 (1.736)
3rd 28/23 (1.217)
Chassis:
Frame type Double cradle
Caster angle 24.83˚
Trail 56.0 mm (2.2 in)
Tire:
Type With tube
Size (front) 2.50-14 4PR
Size (rear) 3.00-12 4PR
Manufacturer (front and rear) CHENG SHIN
Type (front and rear) KNOBBY
Tire pressure (front and rear) 100 kPa (1.00 kg/cm
2

, 14.5 psi)
GENERAL SPECIFICATIONS
2

SPEC

2 - 13
NOTE:

l
1. First, tighten the ring nut approximately 38 Nm (3.8 m • kg, 27 ft • lb) by using the ring nut
wrench and turn the steering right and left a few times; then loosen the ring nut one turn.
2. Retighten the ring nut 1 Nm (0.1 m • kg, 0.7 ft • lb).
l
-marked portion shall be checked for torque tightening after break-in or before each ride.Part to be tightened Thread size Q’tyTightening torque
Nm m•kg ft•lb
Engine mounting:
Engine and frame (front-upper) M8
´
1.25 1 30 3.0 22
Engine and frame (rear-upper) M8
´
1.25 1 26 2.6 19
Engine and frame (rear-lower) M10
´
1.25 1 40 4.0 29
Starter cable and frame M11
´
1.25 1 1 0.1 0.7
Pivot shaft and nut M10
´
1.25 1 30 3.0 22
Handle crown and steering shaft M10
´
1.25 1 40 4.0 29
Front fork cap bolt M20
´
1.0 2 40 4.0 29
Under bracket and front fork M10
´
1.25 2 33 3.3 24
Damper rod bolt M8
´
1.25 2 20 2.0 14
Handle crown and handlebar holder (lower) M10
´
1.25 2 40 4.0 29
Handlebar holder (upper) M6
´
1.0 4 13 1.3 9.4
Front brake cable holder and front fork M6
´
1.0 2 7 0.7 5.1
Steering ring nut M25 1 Refer to NOTE.
Fuel tank and fuel cock M6
´
1.0 2 7 0.7 5.1
Fuel tank and frame M6
´
1.0 2 7 0.7 5.1
Grab bar and frame M6
´
1.0 4 13 1.3 9.4
Front brake camshaft lever and camshaft M6
´
1.0 1 7 0.7 5.1
Rear brake camshaft lever and camshaft M6
´
1.0 1 7 0.7 5.1
Front wheel axle nut M10
´
1.25 1 35 3.5 25
Rear brake shoe plate tension bar M8
´
1.25 2 26 2.6 19
Wheel drive hub and driven sprocket M8
´
1.25 4 25 2.5 18
Rear wheel axle nut M12
´
1.25 1 60 6.0 43
Wheel nipple (spoke) — 64 2 0.2 1.4
Chain case M5
´
0.8 5 4 0.4 2.9
Chain puller locknut M6
´
1.0 2 3 0.3 2.2
Footrest and frame M8
´
1.25 2 30 3.0 22
MAINTENANCE SPECIFICATIONS

4 - 8
ENGCYLINDER HEAD
CYLINDER HEAD
Extent of removal:1 Cylinder head removal
Extent of removal Order Part name Q’ty Remarks
CYLINDER HEAD REMOVAL
Preparation for removal Seat, fuel tank and rear fender
Exhaust pipe
Carburetor Refer to “CARBURETOR” section.
Air filter case and starter lever
1 Plug cap/spark plug 1/1
2 Crankshaft end cover/O-ring 1/1
3 Timing plug/O-ring 1/1
4 Camshaft sprocket cover/O-ring 1/1
5 Tappet cover (intake)/O-ring 1/1
6 Tappet cover (exhaust)/O-ring 1/1
7 Camshaft sprocket bolt/washer 1/1
Refer to “REMOVAL POINTS”. 8 Timing chain tensioner 1
9 Gasket 1
1