Mazda 1975 Rotary Pickup Workshop Manual page 71

$'
f
*,
Ft*om
-
diaphragm stroke
t $ire
bimetal sPring
t tii'.
Frll out the choke lever link and keep its
F
Or
-w-rre-
I m
drc diaphragm plunger in fully and keep its
IFla
bY wire as shown in Fig. 4-l l.
Figt 4-11 Adjusting bimetal sPring
tbc choke valve clearance (R) as shown in
4-A-5.
Accelerator PumP
a. Checking accelerator pump
l. Remove the air cleaner.
2. Check the pump for discharge by moving the
primary throttle valve.
3. Ctreck the pump for nozzle's clogging.
*lren the pump nozzle is clogged, remove tlla nozzle
and clean up the nozzle.
b. Ched<ing amount of accelerator pump discharge
Checking of accelerator pump discharge amount is
as fdlows:
l. Make surc that the pump connecting rod is set
inside hole of the pumP lever.
2. Place the vehicle on
'a
level ground.
3. Set the burette at the fuel inlet of the carburetor
and fill it with fuel.
4. Fully operate the throttle valve about five times
and confirm the fuel discharged from the accelerating
pump jet.
5. Set the fuel level in the burette at 300 mm
(11.8 in) above the fuel inlet, as shown in Fig. 4-I4'
Fig. 4-14 Checking fuel discharge
6. Fully operate the throttle valve ten times according
to the cyile as shown in Fig. 4-I5
by means of
the throttle lever or accelerator pedal and check the
amount of discharge by reading the decrease of fuel
in the burette.
7. lf the discharge amount is not within specifications,
check the accelerator pump piston and etc.
Fig. 4-15 Test pattern
-
Jarance (R)1s not within specifications, first
r $, rhen turn @ to adjust the clearance (R).
i
a-12 Adjusting choke valve clearance (R)
Gf
rd
manud
ftua
4.5 t 0.1 mm (0.177 t 0.004 in)
&r r"lf eutomatic
Fllsbn
5.8 t 0.1 mm (0.228 t 0.004 in)
;a
e-13 Choke valve clearance (R)