Yamaha MBK MW125 2014, Service Manual

Page: 97 / 380

PERIODIC MAINTENANCE
3-16
5. Remove:
• Front cowling assembly
Refer to “GENERAL CHASSIS (7)” on page
4-14.
• Handlebar
Refer to “HANDLEBAR” on page 4-60.
6. Adjust:
• Steering head
• Lower brackets
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Remove the upper ring nut “1”, lock washer
“2”, center ring nut “3” and rubber washer.
b. Loosen the lower ring nut “4” and then tighten
it to specification with a steering nut wrench
“5”.
TIP
Set the torque wrench at a right angle to the
steering nut wrench.
c. Loosen the lower ring nut 1/4 of a turn, and
then tighten it to specification with a steering
nut wrench.
WARNING
EWA13140
Do not overtighten the lower ring nut.
d. Check the steering head or lower brackets for
looseness or binding by turning the handle-
bar all the way in both directions. If any bind-
ing is felt, remove the steering column or
lower brackets and check the upper and low-
er bearings.
Refer to “STEERING HEAD” on page 4-81.
Refer to “FRONT ARMS AND LOWER
BRACKETS” on page 4-76.
e. Install the rubber washer.
f. Install the center ring nut.
g. Finger tighten the center ring nut, then align
the slots of both ring nuts. If necessary, hold
the lower ring nut and tighten the center ring
nut until their slots are aligned.
h. Install the lock washer “2”.
TIP
Make sure the lock washer tabs “a” sit correctly
in the ring nut slots “b”.
i. Hold the lower and center ring nuts with a
steering nut wrench and tighten the upper
ring nut with a another steering nut wrench.
Steering nut wrench
90890-01403
Exhaust flange nut wrench
YU-A9472
T
R
.
.
Lower ring nut (initial tightening
torque)
38 Nm (3.8 m·kgf, 27 ft·lbf)
3
1
2
T
R
.
.
Lower ring nut (final tightening
torque)
16 Nm (1.6 m·kgf, 12 ft·lbf)
5
4
a
b
2