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Fig.
2-55.
Co
ld starting
,
principle
1.
By-pass vdlve
2.
Id le trimming screw
3. Valve for temperature compensator
4.
Bi-metal spring for temperature compensator
5. Suction chamber
6. Spring
7.
Damper piston
8. Diaphragm
9. Drilling for air
supply
under diaphragm
10. Air valve
11
.
Metering needle suspension
VOLVO
103
3
4
~
12. Drilling for air supply to temp
.
comp
.
and id le trimming
screw
13.
Fuel
jet
14.
Carburettor housing (middle section)
15. Metering needle
16. Floatchamber
17.
,Rubber ring
18. Floatchamber plug
19. Drilling for
cold
start fuel (Iocated in carb, opposite wall)
20.
Drilling for extra air through temperature compensator
21. Drilling for extra air through id le trimming screw
22. Inlet channel for
fuel
mixing through by-pass valve
23. Oullet channel for fuel mixing through by-pass valve
24
.
Secondary throttle
25.
Primary throttle
26. Vacuum outlet for ignition distributor
2:
26
Fig.
2-56.
Idling
,
worm engine
VOLVO
;033,\
8
VOLVO
103349
Fig. 2-57.
Normal
running,
with open
secondery throttle
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