Toyota 5R 1969 Repair Manual page 94

C A R B U R E T O R
Description & Construction
T h e general construction and operation of the carburetor equipped on the R K 4 4 ,
101 and 171 s e ries are similar to those of the carburetor equipped on the R S ,
R T 4 3 L and R T 5 2 L se rie s with the exception of the choke system, thermostatic
valve system and the
automatic choke system and the thermostatic valve system.
The choke system is of a manual type mechanism. When the choke valve is fully
closed, the primary throttle valve is mechanically opened to 12 from the closed
position by the starting connecting link.
B y this operation,
1
N eed le valve
.
2. Float
3. P o w e r valve
4. P r im a r y main jet
5. Idle adjusting s c r e w
6. P r im a ry throttle valve
7. Pump jet
8.
Choke valve
9. P r im a r y main nozzle
0. P r im a r y small venturi
1
P r im a r y main air bleeder
.
2. A i r vent
F i g . 5-53
- On R K s e ries
components.
the engine can be w arm ed up adequately without stalling.
C ro s s Sectional V ie w of Carburetor
F U E L S Y S T E M - Carburetor
This carburetor does not incorporate the
13. P r im a r y air bleeder
14. S lo w jet
15. P o w e r piston
16. S e c o n d a r y small venturi
17. S e c o n d a r y main nozzle
18. S e c o n d a r y main air bleeder
19. A i r vent
20. Pump valve
21. Pump plunger
22. S e c o n d a r y main jet
23. High speed valve
24. S e c o n d a r y throttle valve
5-25
G3139