Mazda 1975 Rotary Pickup Workshop Manual page 72

4
bn&cati
diaphragm stroke
f
lc;rrting bimetal spring
; .
pull out the choke lever
ilililr;
-
b,v wire.
!.;-
:he diaphragm plunger in
ili,')r,!; ' b1' wire as shown in Fig.
choke valve clearance (R) as shown in
rg
4-12
Adjusting choke valve clearance (R)
4-A-5.
Accelerator Pump
a. Checking accelerator pump
l. Remove the air cleaner.
l. Check the pump for discharge by moving the
primary' throttle valve.
-1. Check the pump for nozzle's clogging.
Shen the pump nozzle is clogged, remove the nozzle
and clean up the nozzle.
b. Checking amount of accelerator pump discharge
Checking of accelerator pump discharge amount is
as follows:
1. Make sure 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. 4-14.
Il
I
I
l
Fig. 4-14 Checking fuel discharge
6. Fully operate the throttle valve ten times according
to the cycle as shown in Fig. 4-15 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. If the discharge amount is not within specifications,
check the accelerator pump piston and etc.
Fig. 4-15 Test pattern
link and keep
keep its fully and
4-tt.
t :
pr"[
.
u : ,
rlfrifri*-l
,:..r*., (R)-ls not within specifications, first
then turn (p to adjust the clearance (R).
5.8 t 0.1 mm (0.228 + 0.0O4 in)
Fis.4-11 Adjusting bimetal qpring
B i m e t a l T e t n p e r a t u r e . . . ' . . ' C ( ' F )
Ffg. 4-13 Choke valve clearance (R)