Toyota 4-Runner 1985 Repair Manual page 258

I I
FUEL SYSTEM - Carburetor FU-15
FU0266
FU0263 FU0283
FU0285 FU0284
(B)
FU0286 FU0284
Assembly of Air Horn
(See page FU-4)
1. INSTALL OUTER VENT CONTROL VALVE
(a) Place a new gasket in position on the air horn.
(b) Install the outer vent control valve on the air horn with
the three screws.
2. INSTALL POWER PISTON
(8) Place the power piston spring and piston into the bore.
(b) While pushing the piston, rotate the retainer over the
piston.
(c) Tighten the retainer screw.
3. INSTALL FLOAT AND NEEDLE VALVE
(a) Install the valve seat over a new gasket into the fuel
inlet.
(b) Install the needle valve onto the valve seat.
(c) Insert the lip of the float under the wire of the needle
valve.
(d) Install the float and secure it with the pivot pin.
4. ADJUST FLOAT LEVEL
(a) Allow the float to hang down by its own weight.
Using SST, check the clearance between the float top
and air horn.
SST 09240-00014
NOTE: This measurement should be made without a
gasket on the air horn.
Float level (raised position): 9.8 mm (0.386 in.)
(b) Adjust by bending portion (A) of the float.
(c)
Lift up the float and, using vernier calipers, check the
distance between the air horn and the float bottom.
Float level (lowered position): 48 mm (1.89 in.)
(d) Adjust by bending portion (B) of the float.