2008 YAMAHA WR 450F torque

6-21
FRONT FORK
Be sure to install the spring guide "2"
when checking the oil level.
Never fail to make the oil level ad-
justment between the maximum
and minimum level and always ad-
just each front fork to the same
setting. Uneven adjustment can
cause poor handling and loss of
stability.
21. Measure:
• Distance "a"
Out of specification→Turn into
the locknut.
22. Loosen:
• Rebound damping adjuster "1"
• Loosen the rebound damping ad-
juster finger tight.
• Record the set position of the ad-
juster (the amount of turning out the
fully turned in posi-tion).
23. Install:
• Push rod "1"
• Fork spring "2"
• Install the fork spring with the
damper rod "3" pulled up.
• After installing the fork spring, hold
the damper rod end so that it will not
go down.
24. Install:
• Spring seat "1"
• Front fork cap bolt "2"
Fully finger tighten the front fork cap
bolt onto the damper rod.
25. Tighten:
• Front fork cap bolt (locknut) "1"
Hold the locknut "2" and tighten the
front fork cap bolt with specified
torque.
26. Install:
• Front fork cap bolt "1"
To outer tube.
Temporarily tighten the cap bolt.
27. Install:
• Protector guide "1"
Install the protector guide with its wid-
er side "a" facing downward.
INSTALLING THE FRONT FORK
1. Install:
• Front fork "1"
• Temporarily tighten the pinch bolts
(lower bracket).
• Do not tighten the pinch bolts (up-
per bracket) yet.
2. Tighten:
• Front fork cap bolt Distance "a":
18 mm (0.71 in) or more
Between damper rod
"1" top and locknut "2"
top.
Front fork cap bolt (lock-
nut):
29 Nm (2.9 m•kg, 21
ft•lb)
Front fork cap bolt:
30 Nm (3.0 m•kg, 22
ft•lb)

6-22
FRONT FORK
3. Adjust:
• Front fork top end "a"
4. Tighten:
• Pinch bolt (upper bracket) "1"
• Pinch bolt (lower bracket) "2"
Tighten the lower bracket to speci-
fied torque. If torqued too much, it
may cause the front fork to mal-
function.
5. Install:
• Speed sensor lead "1"
• Plate 1 "2"
• Bolt (plate 1) "3"
To right protector "4".
Install the speed sensor lead so that
its paint "a" directs as shown and
align the bottom "b" of the plate 1 with
the same paint.
6. Install:
• Speed sensor lead "1"
•Plate 2 "2"
• Screw (plate 2) "3"
To right protector "4".
Install the plate 2 in the direction as
shown.
7. Install:
• Protector "1"
• Bolt (protector) "2"
8. Adjust:
• Rebound damping force
Turn in the damping adjuster "1" fin-
ger-tight and then turn out to the orig-
inally set position.
Front fork top end (stan-
dard) "a":
Zero mm (Zero in)
Pinch bolt (upper brack-
et):
21 Nm (2.1 m•kg, 15
ft•lb)
Pinch bolt (lower brack-
et):
21 Nm (2.1 m•kg, 15
ft•lb)
Bolt (plate 1):
4 Nm (0.4 m•kg, 2.9 ft •
lb)
Screw (plate 2):
0.5 Nm (0.05 m•kg, 0.36
ft•lb)
Bolt (protector):
7 Nm (0.7 m•kg, 5.1
ft•lb)

6-30
STEERING
6. Install:
• Washer "1"
7. Install:
• Front fork "1"
• Upper bracket "2"
• Main switch "3"
• Front brake hose guide bracket
"4"
• Temporarily tighten the pinch bolts
(lower bracket).
• Do not tighten the pinch bolts (up-
per bracket) yet.
8. Install:
• Guide (speed sensor lead) "1"
After installing the guide as shown,
pass the speed sensor lead through
the guide.
9. Install:
• Washer "1"
• Steering stem nut "2"10. After tightening the nut, check the
steering for smooth movement. If
not, adjust the steering by loosen-
ing the steering ring nut little by lit-
tle.
11. Adjust:
• Front fork top end "a"
12. Tighten:
• Pinch bolt (upper bracket) "1"
• Pinch bolt (lower bracket) "2"
Tighten the lower bracket to speci-
fied torque. If torqued too much, it
may cause the front fork to mal-
function.
13. Install:
• Multi-function display bracket "1"
• Multi-function display "2"
Pass the throttle cables "3", clutch ca-
ble "4" and hot starter cable "5" be-
tween the multi-function display
bracket and upper bracket.
14. Install:
• Holder "1"
• Clamp "2"
• Install so that the marking "a" on the
speed sensor lead aligns with the
holder edge.
• Fasten the speed sensor lead to the
holder with the clamp.
Steering stem nut:
145 Nm (14.5 m•kg, 105
ft•lb)
Front fork top end (stan-
dard) "a":
Zero mm (Zero in)
Pinch bolt (upper brack-
et):
21 Nm (2.1 m•kg, 15
ft•lb)
Pinch bolt (lower brack-
et):
21 Nm (2.1 m•kg, 15
ft•lb)
Multi-function display
bracket:
7 Nm (0.7 m•kg, 5.1
ft•lb)
Multi-function display:
4 Nm (0.4 m•kg, 2.9
ft•lb)
Holder:
13 Nm (1.3 m•kg, 9.4
ft•lb)
Clamp:
7 Nm (0.7 m•kg, 5.1
ft•lb)