Yamaha YZ450FA Automobile User Manual


 
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CHASSIS
e. Loosen the steering ring nut one turn.
f. Retighten the steering ring nut using the
steering nut wrench.
Avoid over-tightening.
g. Check the steering stem by turning it lock to
lock. If there is any binding, remove the
steering stem assembly and inspect the
steering bearings.
h. Install the washer "5", upper bracket "6",
steering stem nut "7", handlebar "8", handle-
bar upper holder "9" and number plate "10".
• Apply the lithium soap base grease on the
contact surface of the steering stem nut when
installing.
• The handlebar upper holder should be in-
stalled with the punched mark "a" forward.
Install the handlebar so that the marks "b" are
in place on both sides.
Install the handlebar so that the projection "c"
of the handlebar upper holder is positioned at
the mark on the handlebar as shown.
• Insert the end of the fuel breather hose "11"
into the hole in the steering stem.
First tighten the bolts on the front side of
the handlebar upper holder, and then tight-
en the bolts on the rear side.
Steering ring nut (final tightening):
7 Nm (0.7 m•kg, 5.1 ft•lb)
Steering stem nut:
145 Nm (14.5 m•kg, 105 ft•lb)
Handlebar upper holder:
28 Nm (2.8 m•kg, 20 ft•lb)
Pinch bolt (upper bracket):
21 Nm (2.1 m•kg, 15 ft•lb)
Number plate:
7 Nm (0.7 m•kg, 5.1 ft•lb)