Idle Adjusting S C R E W; Installation - Toyota 5R 1969 Repair Manual

5-34 F U E L S Y S T E M
position. T o perform this check,
use the A n g le Gauge as shown in
figure 5-73,
adjust the throttle valve opening
angle by bending o r extending the
starting connecting link ( 1 ) .
F i g . 5-73 Adjusting Fast
High Speed V a lv e
Install the insulator with the high speed
valve onto the flange.
Adjust the installation of the high speed
va lve to obtain the clearan ce between
the va lve and the b o re to be 0.6 mm
( 0 . 0 2 4 " ) using the W ire Gauge
loosening the high speed valve retain­
ing s c r e w s .
A ft e r adjusting the va lv e , check if the
operation of the va lve is smooth, then
calk the retaining s c r e w ends.
F ig . 5-74 Adjusting High
S peed V a lv e
- Carburetor
and if n ecess a ry ,
G3142
Idle
W ir e G a u g e
0 - 6 m m ( 0 0 2 4 " )
Y7294
High Speed V a lve Stopper L e v e r
Check if the high speed valve stopper
le v e r begins detaching the high speed
valve shaft just before the start of the
secondary throttle valve opening.
If n e c e s s a r y ,
motion of the high speed valve stopper
le v e r by bending the lip of the primary
throttle arm .

Idle Adjusting S c r e w

T h e idle adjusting sc re w should be
co rrectly adjusted after the carburetor
is installed
pre-adjustment, sc re w in the idle ad­
justing s c r e w with the fin gers until it
slightly
two and a half turns.
Do not screw in the sc re w securely.
If the tapered
sc r e w is damaged, a smooth idling
speed and a c o r r e c t vacuum connot
be obtained.
In stallation
1 . Follow the removal p roce d u res in
by
the r e v e r s e o r d e r .
2. A ft e r
check
leak, then perform the idle adju st-
ment re fe rr in g to Engine Tu ne-U p
section.
adjust the detaching
onto the engine, but as
seats, and sc re w out about
end of the adjusting
the engine is w arm ed up,
the float level and fo r fuel