2005 YAMAHA WR 450F oil

5 - 34
CHASFRONT FORK
13. Check:
Inner tube smooth movement
Tightness/binding/rough spots → Repeat
the steps 2 to 12.
14. Compress the front fork fully.
15. Fill:
Front fork oil
Until outer tube top surface with recom-
mended fork oil 1.
CAUTION:
Be sure to use recommended fork oil. If
other oils are used, they may have an
excessively adverse effect on the front
fork performance.
Never allow foreign materials to enter the
front fork.
Recommended oil:
Suspension oil “S1”
16. After filling, pump the damper rod 1 slowly
up and down more than 10 times to distrib-
ute the fork oil.
17. Fill:
Front fork oil
Until outer tube top surface with recom-
mended fork oil once more.
18. After filling, pump the outer tube 1 slowly
up and down (about 200 mm (7.9 in)
stroke) to distribute the fork oil once more.
NOTE:
Be careful not to excessive full stroke. A stroke
of 200 mm (7.9 in) or more will cause air to
enter. In this case, repeat the steps 15 to 18.

5 - 35
CHASFRONT FORK
19. Wait ten minutes until the air bubbles have
been removed from the front fork, and the
oil has dispense evenly in system before
setting recommended oil level.
NOTE:
Fill with the fork oil up to the top end of the
outer tube, or the fork oil will not spread over to
every part of the front forks, thus making it
impossible to obtain the correct level.
Be sure to fill with the fork oil up to the top of
the outer tube and bleed the front forks.
20. Measure:
Oil level (left and right) a
Out of specification → Adjust.
* For EUROPE, AUS, NZ and ZA
NOTE:
Be sure to install the spring guide 2 when
checking the oil level.
WARNING
Never fail to make the oil level adjustment
between the maximum and minimum level
and always adjust each front fork to the
same setting. Uneven adjustment can
cause poor handling and loss of stability.
Standard oil level:
128 mm (5.04 in)
* 130 mm (5.12 in)
Extent of adjustment:
80 ~ 150 mm (3.15 ~ 5.91 in)
From top of outer tube with
inner tube and damper rod
1
fully compressed without
spring.

5 - 41
CHASHANDLEBAR
EC5B5000
ASSEMBLY AND INSTALLATION
Handlebar
1. Install:
Handlebar 1
Handlebar holder 2
Bolt (handlebar holder) 3
NOTE:
The handlebar holder should be installed
with the punched mark a forward.
Install the handlebar so that the marks b are
in place on both sides.
First tighten the bolts on the front side of the
handlebar holder, and then tighten the bolts
on the rear side.
T R..28 Nm (2.8 m · kg, 20 ft · lb)
2. Install:
Grip (left) 1
Apply the adhesive to the handlebar 2.
NOTE:
Before applying the adhesive, wipe off
grease or oil on the handlebar surface a
with a lacquer thinner.
Install the grip (left) to the handlebar so that
the line b between the two arrow marks
faces straight upward.

5 - 42
CHASHANDLEBAR
3. Install:
Grip (right) 1
Collar 2
Apply the adhesive on the tube guide 3.
NOTE:
Before applying the adhesive, wipe off
grease or oil on the tube guide surface a
with a lacquer thinner.
Install the grip to the tube guide so that the
grip match mark b and tube guide slot c
form the angle as shown.
R
L
90˚
3 1b
c
4. Install:
Cover (grip cap) 1
Throttle grip 2
NOTE:
Apply the lithium soap base grease on the
throttle grip sliding surface.
5. Install:
Throttle cables 1
To tube guide 2.
NOTE:
Apply the lithium soap base grease on the
throttle cable end and tube guide cable wind-
ing portion.

5 - 53
CHASSWINGARM
EC578000
SWINGARM DISASSEMBLY
Extent of removal:
1 Swingarm disassembly
2 Connecting rod removal and disassembly
3 Relay arm removal and disassembly
Extent of removal Order Part name Q’ty Remarks
SWINGARM DISASSEMBLY
1 Cap 2 Refer to “REMOVAL POINTS”.
2 Relay arm 1
3 Connecting rod 1
4 Collar 2
5 Oil seal 2
6 Thrust bearing 2
7 Bush 2
8 Oil seal 8
9 Bearing 10 Refer to “REMOVAL POINTS”.
1
2
32
3

5 - 54
CHASSWINGARM
EC573000
REMOVAL POINTS
Cap
1. Remove:
Cap (left) 1
NOTE:
Remove with a slotted-head screwdriver
inserted under the mark a on the cap (left).
EC573200
Bearing
1. Remove:
Bearing 1
NOTE:
Install the bearing by pressing its outer race.
EC574010
INSPECTION
Wash the bearings, bushes, collars, and cov-
ers in a solvent.
EC574111
Swingarm
1. Inspect:
Bearing 1
Bush 2
Free play exists/unsmooth revolution/rust
→ Replace bearing and bush as a set.
2. Inspect:
Oil seal 3
Damage → Replace.
Relay arm
1. Inspect:
Bearing 1
Collar 2
Free play exists/unsmooth revolution/rust
→ Replace bearing and collar as a set.
2. Inspect:
Oil seal 3
Damage → Replace.

5 - 55
CHASSWINGARM
Connecting rod
1. Inspect:
Bearing 1
Collar 2
Free play exists/unsmooth revolution/rust
→ Replace bearing and collar as a set.
2. Inspect:
Oil seal 3
Damage → Replace.
EC575000
ASSEMBLY AND INSTALLATION
Bearing and oil seal
1. Install:
Bearing 1
Oil seal 2
To swingarm.
NOTE:
Apply the molybdenum disulfide grease on
the bearing when installing.
Install the bearing by pressing it on the side
having the manufacture’s marks or numbers.
First install the outer and then the inner bear-
ings to a specified depth from inside.
Installed depth of bearings:
Outer
a: Zero mm (Zero in)
Inner
b: 8.5 mm (0.33 in)
2. Install:
Bearing 1
Plain washer 2
Oil seal 3
To relay arm.
NOTE:
Apply the molybdenum disulfide grease on
the bearing when installing.
Install the bearing by pressing it on the side
having the manufacture’s marks or numbers.
Apply the molybdenum disulfide grease on
the plain washer.
Installed depth of bearings
a:
Zero mm (Zero in)

5 - 56
CHASSWINGARM
3. Install:
Bearing 1
Oil seal 2
To connecting rod.
NOTE:
Apply the molybdenum disulfide grease on
the bearing when installing.
Install the bearing by pressing it on the side
having the manufacture’s marks or numbers.
Installed depth of bearings
a:
5 mm (0.20 in)
Swingarm
1. Install:
Bush 1
Thrust bearing 2
Oil seal 3
Collar 4
To swingarm 5.
NOTE:
Apply the molybdenum disulfide grease on the
bushes, thrust bearings, oil seal lips and con-
tact surfaces of the collar and thrust bearing.
2. Install:
Collar 1
Washer 2
To relay arm 3.
NOTE:
Apply the molybdenum disulfide grease on the
collars and oil seal lips.