2006 YAMAHA WR 450F coolant reservoir

SPEC
2 - 17
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race. Multi-function display mounting M5 × 0.8 2 4 0.4 2.9
Plate 1 and protector M5 × 0.8 2 4 0.4 2.9
Plate 2 and protector—2 0.5 0.05 0.36
Speed sensor lead holder and headlight stay
(lower)M6 × 1.0 1 7 0.7 5.1
Headlight stay (lower) and under bracket M8 × 1.25 2 15 1.5 11
Headlight body and headlight unit M6 × 1.0 2 7 0.7 5.1
Headlight mounting (left and right) M6 × 1.0 2 7 0.7 5.1
Headlight mounting (lower) M6 × 1.0 1 7 0.7 5.1
Taillight mounting M6 × 1.0 3 4 0.4 2.9
Taillight lead clamp and rear fender—2 0.5 0.05 0.36
Coolant reservoir tank mounting M6 × 1.0 2 7 0.7 5.1
Sidestand bracket mounting M10 × 1.25 2 66 6.6 48
Drive chain stopper and sidestand bracket M6 × 1.0 1 7 0.7 5.1
Sidestand mounting M8 × 1.25 1 20 2.0 14 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
MAINTENANCE SPECIFICATIONS

2 - 23
SPECCABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1Fuel tank breather hose
2Clamp
3Diode
4Wire harness
5Hot starter cable
6Negative battery lead
7Starter motor lead
8TPS (throttle position sensor)
lead
9Cylinder head breather hose
0Neutral switch lead
AOil hose
BAC magneto lead
COil tank breather hose
DRectifier/regulator lead
EBrake hose
FHose guideGCarburetor breather hose
HOverflow hose
ICoolant reservoir tank breather
hose
ÈInsert the fuel tank breather
hose into the hole in the steer-
ing shaft cap.
ÉUsing a plastic locking tie and
fasten the diode of the wire har-
ness (at the white tape) to the
frame, and cut off the tie end.ÊFasten the wire harness, cool-
ant reservoir hose and hot
starter cable to the frame with a
plastic locking tie and cut off the
tie end.
ËFasten the wire harness and
coolant reservoir hose to the
frame with a plastic locking tie
and cut off the tie end.
ÌFasten the wire harness to the
frame at its white tape with a
plastic locking tie and cut off the
tie end.
2
Ù
B
BA
B-B
A
A
0Ò2
Ñ2 B ÓC Ô D
EFÕÖ2
×2F
1
È
2
É
3
2
Ê
452
Ë
2
Ì2
Í
6
7
Î
2
Ï
8
9
0
A 2
ÐØ GG
HI

2 - 25
SPECCABLE ROUTING DIAGRAM
1Hot starter cable
2Clutch cable
3Throttle cable (return)
4Throttle cable (pull)
5Ignition coil
6Negative battery lead
7Starter motor lead
8Coolant reservoir tank breather
hose
9Cable holder
0Coolant reservoir hose
AClamp
BCDI unit lead
CCDI unit
DCDI unit band
ECDI unit stay (frame)
FCable bracketÈPass the throttle cables, clutch
cable and hot starter cable
through the cable guides.
ÉPass the throttle cables, clutch
cable and hot starter cable
between the radiator and frame,
then over the middle radiator
mounting boss.
ÊPass the throttle cables and
clutch cable on the outside of
the ignition coil.
ËPass the carburetor breather
hose (throttle cable cover)
through the hose holder.
ÌFasten the coolant reservoir
tank breather hose and carbure-
tor breather hoses together with
a plastic locking tie.ÍFasten the grommet of the clutch
cable with the cable holder.
ÎFasten the CDI unit lead to the
frame with a plastic locking tie
ends at the lower of the frame
and cut off the tie end.
ÏInsert the CDI unit band over the
CDI unit stay (frame) as far as
possible.
ÐFasten the starter motor lead
and negative battery lead to the
cable bracket in its slot with a
plastic locking tie and cut off the
tie end.
A
A
D
ÏE A
Ð
B
B
C
F
Í90
ÎABCD
1
2
43
È
É
Ê
5
6 7 8 Ë Ì

2 - 27
SPECCABLE ROUTING DIAGRAM
1Starter motor lead
2Negative battery lead
3Wire harness
4Clamp
5Taillight lead
6Coolant reservoir tank breather
hose
7Coolant reservoir hose
8Positive battery lead
9Starting circuit cut-off relay
0BatteryÈPosition the starter motor lead,
negative battery lead and wire
harness in the tank damper slit.
ÉFasten the wire harness to the
frame with a plastic locking tie
and cut off the tie end.
ÊFasten the coolant reservoir
tank breather hose and coolant
reservoir hose to the frame with
a plastic locking tie.
ËDo not allow the taillight lead to
slacken.
ÌPass the starter motor lead and
negative battery lead over the
carburetor.
ÍFasten the coolant reservoir
tank breather hose and coolant
reservoir hose to the frame with
a plastic band.ÎPass the coolant reservoir hose
on the outside of the coolant
reservoir tank breather hose.
7Ì4
Í
5
Ë
4
Ê
7
6
È3
2
1
4
É
4
Í4
Í
Î 0
968
213
Zero ~ 10 mm
(Zero ~ 0.39 in)

3 - 6
INSP
ADJ
COOLANT REPLACEMENT
CAUTION:
Take care so that coolant does not splash
on painted surfaces. If it splashes, wash it
away with water.
1. Place a container under the engine.
2. Remove:
Seat
Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section in the CHAPTER 4.
3. Disconnect:
Coolant reservoir hose 1
Drain the coolant completely.
4. Connect:
Coolant reservoir hose
LOWFULLCOOLANT1
5. Remove:
Engine guard 1
Coolant drain bolt 2
6. Remove:
Radiator cap
Drain the coolant completely.
7. Clean:
Cooling system
Thoroughly flush the cooling system with
clean tap water.
8. Install:
Copper washer
Coolant drain bolt
Engine guard
Bolt [engine guard (front)]
Bolt [engine guard (rear)]
New
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
T R..34 Nm (3.4 m · kg, 24 ft · lb)
T R..23 Nm (2.3 m · kg, 17 ft · lb)

3 - 7
INSP
ADJ
COOLANT REPLACEMENT
9. Fill:
Radiator
Engine
To specified level.
CAUTION:
Do not mix more than one type of ethyl-
ene glycol antifreeze containing corro-
sion inhibitors for aluminum engine.
Do not use water containing impurities or
oil.
Recommended coolant:
High quality ethylene glycol
anti-freeze containing
anti-corrosion for
aluminum engine
Coolant
1 and water
(soft water)
2 mixing ratio:
50%/50%
Coolant capacity:
1.20 L (1.06 Imp qt, 1.27 US qt)
Handling notes of coolant:
The coolant is harmful so it should be han-
dled with special care.
WARNING
When coolant splashes to your eye.
Thoroughly wash your eye with water
and see your doctor.
When coolant splashes to your clothes.
Quickly wash it away with water and
then with soap.
When coolant is swallowed.
Quickly make him vomit and take him
to a doctor.
10. Install:
Radiator cap
11. Fill:
Coolant reservoir tank
Midway a between maximum and mini-
mum marks on the tank.
LOWFULLCOOLANTa

3 - 8
INSP
ADJRADIATOR CAP INSPECTION/
RADIATOR CAP OPENING PRESSURE INSPECTION
12. Install:
Coolant reservoir cap
13. Start the engine and let it warm up for sev-
eral minutes.
14. Turn off the engine and inspect the coolant
level.
Refer to “COOLANT LEVEL INSPECTION”
section.
NOTE:
Before checking the coolant level wait a few
minutes until the coolant settles.
EC355000
RADIATOR CAP INSPECTION
1. Inspect:
Seal (radiator cap) 1
Valve and valve seat 2
Crack/damage → Replace.
Exist fur deposits 3 → Clean or replace.
EC356001
RADIATOR CAP OPENING PRESSURE
INSPECTION
1. Attach:
Radiator cap tester 1 and adapter 2
NOTE:
Apply water on the radiator cap seal.
3Radiator cap
2. Apply the specified pressure.
Radiator cap tester:
YU-24460-01/90890-01325
Adapter:
YU-33984/90890-01352
Radiator cap opening pressure:
110 kPa (1.1 kg/cm2, 15.6 psi)

4 - 5
ENGRADIATOR
EC450001
RADIATOR
Extent of removal:
1 Radiator removal
2 Coolant reservoir removal
Extent of removal Order Part name Q’ty Remarks
RADIATOR REMOVAL
Preparation for removal Drain the coolant. Refer to “COOLANT REPLACEMENT”
section in the CHAPTER 3.
Seat, fuel tank and side cover Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section.
Exhaust pipe Refer to “EXHAUST PIPE AND
SILENCER” section.
1 Engine guard 1
2 Panel 2
3Clamp 8
4 Radiator (right) 1
5 Hose 2 1
6 Hose 3 1
7 Hose 4 1
8 Pipe 2/O-ring 1/1
9 Radiator breather hose 1
10 Radiator (left) 1
11 Hose 1 1
12 Pipe 1/O-ring 1/1
13 Coolant reservoir hose 1
14 Coolant reservoir tank 1
1
2