Yamaha WR250FM Bicycle User Manual


 
4 - 19
ENG
CARBURETOR
19. Install:
Carburetor breather hose 1
N
OTE:
Install the carburetor breather hoses to the
carburetor so that the hoses do not bend near
where they are installed.
Accelerator pump timing adjustment
Adjustment steps:
N
OTE:
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:
1.5 mm (0.06 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
N
OTE:
Install the projection a on the cylinder
between the carburetor joint slots b.
T
R
.
.
3 Nm (0.3 m · kg, 2.2 ft · lb)
2. Install:
Carburetor 1
N
OTE:
Install the projection a between the carburetor
joint slots.