Accelerator Pump Timing Adjustment; Carburetor Installation - Yamaha YZ426F(P) Owner's Service Manual

2
1
1
4 - 18
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 specilfied
value.
Throttle valve height:
3.40 mm (0.134 in)
Fully turn in the accelerator pump adjust-
G
ing screw 3.
Check that the link lever 4 has free play
G
b by pushing lightly on it.
Gradually turn out the adjusting screw
G
while moving the link lever until it has no
more free play.

Carburetor installation

1. Install:
Carburetor joint 1
G
3 Nm (0.3 m · kg, 2.2 ft · lb)
NOTE:
Install the projection a on the cylinder head
between the carburetor joint slots b.
2. Install:
Carburetor 1
G
NOTE:
Install the projection between the carburetor
joint slots.
3. Tighten:
Screw (air cleaner joint) 1
G
3 Nm (0.3 m · kg, 2.2 ft · lb)
Screw (carburetor joint) 2
G
3 Nm (0.3 m · kg, 2.2 ft · lb)
ENG