Yamaha YZ450F(W), Owner'S Service Manual

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ENG
CARBURETOR
Accelerator pump timing adjustment
Adjustment steps:
NOTE:
In order for the throttle valve height
a
to
achieve the specified value, tuck under the
throttle valve plate
1
the rod
2
etc. with the
same outer diameter as the specified value.
Throttle valve height:
1.25 mm (0.049 in)
• Fully turn in the accelerator pump adjust-
ing screw
3
.
• Check that the link lever
4
has free play
b
by pushing lightly on it.
• Gradually turn out the adjusting screw
while moving the link lever until it has no
more free play.
Carburetor installation
1. Install:
• Carburetor joint
1
T
R
.
.
10 Nm (1.0 m · kg, 7.2 ft · lb)
2. Install:
• Carburetor
1
NOTE:
Install the projection
a
between the carburetor
joint slots.
3. Install:
• Hot starter plunger
1
1
T
R
.
.
2 Nm (0.2 m · kg, 1.4 ft · lb)