Yamaha YFZ450S 2003 Service Manual page 245

b
4
b
a
a
b
CARBURETOR
ADJUSTING THE ACCELERATOR PUMP
TIMING
1. Adjust:
• accelerator pump timing
M MMM
NOTE:
Insert a rod 1 with an outer diameter equal to
the specified throttle valve height a under the
throttle valve plate 2 to achieve the specified
value.
a. Fully turn in the accelerator pump adjusting
3
screw 3.
b. Check that the link lever 4 has free play b
by pushing lightly on it.
c. Gradually turn out the adjusting screw while
moving the link lever until the lever has no
free play.
L LLL
INSTALLING THE CARBURETOR JOINT
b
1. Install:
a
• clamp
NOTE:
Align the projection a on the carburetor joint
with the slot b in the clamp.
2. Install:
• carburetor joint
NOTE:
Align the projection a on the cylinder head
with the slot b in the carburetor joint.
6 - 8
M MMM M M MMM M M MMM M
Throttle valve height
3.40 mm (0.134 in)
L LLL L L LLL L L LLL L
CARB
M MMM M M MMM M MMM
L LLL L L LLL L LLL