Toyota 4-Runner 1985 Repair Manual page 260

FUEL SYSTEM -
Carburetor
FU-17
FU0287
ADJUSTMENT OF CARBURETOR
NOTE: Use SST 09240-00014 to make adjustment.
1. CHECK AND ADJUST THROTTLE VALVE OPENING
Check the full opening angle of the primary and secondary
throttle valves.
Adjust by bending the respective first throttle arm levers
for the primary (1) and secondary (2).
Standard angle:
Primary - 90
°
from horizontal plane
Secondary - 90° from horizontal plane
2. CHECK SECONDARY TOUCH ANGLE
Check the primary throttle valve opening at the same time
the second throttle valve just starts to open.
Standard angle: 59° from horizontal plane
NOTE: It is not necessary to adjust the secondary touch
angle.
3. CHECK AND ADJUST FAST IDLE SETTING
(a) Set the throttle shaft lever to the first step of the fast
idle cam as shown.
(b) With the choke valve fully closed, check the primary
throttle valve angle.
Adjust by turning the fast idle adjusting screw.
Standard angle: 23° from horizontal plane
4. CHECK AND ADJUST UNLOADER
With the primary throttle valve fully opened, check the
choke valve angle. Adjust by bending the primary throttle
arm.
Standard angle: 45° from horizontal plane