1. KARBURATOR

2. PRINSIP KERJA KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PRINSIP KERJA KARBURATOR 1
Water
(c)
(a)
(b)
Air

3. MERUBAH BENSIN MENJADI PARTIKEL – PARTIKEL
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
FUNGSI KARBURATOR 2
MERUBAH BENSIN MENJADI PARTIKEL – PARTIKEL
BERCAMPUR DENGAN UDARA SEHINGGA MUDAH
DI SEMBURKAN
MENGATUR PERBANDINGAN CAMPURAN UDARA DAN
BAHAN BAKAR
MENGATUR JUMLAH CAMPURAN UDARA DAN BAHAN
BAKAR YANG MASUK KE MESIN

4. Flow of air quickens and pressure drops
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
VENTURI 3
Flow of air quickens and pressure drops
Fuel-air
mixture
Air
Atmosphere
Gasoline

5. Cable Throttle valve Fuel-air Air mixture CAMPURAN UDARA DAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
CAMPURAN UDARA DAN
BAHAN BAKAR 4
Fuel-air
mixture
Throttle valve
Cable
Air

6. PERBANDINGAN UDARA – B. BAKAR VS BUKAAN THROTTLE VALVE
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PERBANDINGAN UDARA – B. BAKAR
VS BUKAAN THROTTLE VALVE 5
10 : 1
14 : 1
18 : 1
Theoretical mixture ratio
Mixture ratio 20 60 80
100 40
Output mixture ratio
Degree to which throttle valve is open (%)

7. PERBANDINGAN UDARA – B. BAKAR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PERBANDINGAN UDARA – B. BAKAR 6
Air
Gasoline
22 g : 1 g
Lean boundary limit
Air
Gasoline
15 g : 1 g
Economical
mixture ratio
Air
Gasoline
13 g : 1 g
Maximum output
mixture ratio
Air
Gasoline
12,8 g : 1 g
Rich boundary limit

8. 1. BERDASARKAN ARAH ALIRAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
JENIS KARBURATOR 7
1. BERDASARKAN ARAH ALIRAN
Horizontal draft type
Down draft type

9. 2. BERDASARKAN SISTEM TUAS KATUP
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
JENIS KARBURATOR 8
2. BERDASARKAN SISTEM TUAS KATUP
Opens
Closes
Throttle valve
Piston – type throttle valve
Opens
Closes
Throttle valve
Butterfly – type throttle valve

10. 3. BERDASARKAN JUMLAH SALURAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
JENIS KARBURATOR 9
3. BERDASARKAN JUMLAH SALURAN
Single barrels
Double barrels

11. KONSTRUKSI KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
KONSTRUKSI KARBURATOR 10
Jet needle
Throttle valve
Pilot outlet
Pilot air screw
Pilot jet
Main jet
Throttle stop screw
Throttle stop screw spring
Needle jet
Main air
Pilot air
Bleed air
Air jet
Needle valve
Float
Air at idling low output
Fuel at idling low output
Fuel air mixture at idling low output
Air at medium and high speeds
Fuel at medium and high speeds
Fuel-air mixture at medium and high speeds

12. SISTEM CHOKE 11 ADVANCE KARBURATOR Starter plunger Fuel injection port
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
SISTEM CHOKE 11
Starter plunger
Secondary air
Air bleed hole
(primary air
Intake port)
Starter jet
Starter pipe
Fuel injection
port

13. CHOKE OTOMATIS SISTEM CHOKE 12 ADVANCE KARBURATOR PTC heater
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
SISTEM CHOKE 12
CHOKE OTOMATIS
Air
Fuel-air mixture
Fuel
Starter plunger needle
Starter plunger
Starter plunger holder
PTC heater
To flywhell magneto
Termowax
Spring
Starter plunger needle
Starter plunger
Starter plunger
Starter plunger needle
Air
Fuel

14. 1. TIPE LUBANG TUNGGAL PILOT SYSTEM 13 ADVANCE KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PILOT SYSTEM 13
1. TIPE LUBANG TUNGGAL
Throttle valve
Pilot air screw
Pilot jet

15. 2. TIPE LUBANG GANDA PILOT SYSTEM 14 ADVANCE KARBURATOR Pilot jet
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PILOT SYSTEM 14
2. TIPE LUBANG GANDA
Pilot jet
Pilot outlet
Bypass
( 2 )
Bypass
Pilot outlet
Pilot jet
( 1 )

16. MAIN SYSTEM 15 ADVANCE KARBURATOR Jet needle Main air jet Needle jet
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
MAIN SYSTEM 15
Jet needle
Main air jet
Main jet
Needle jet

17. MAIN SYSTEM 16 ADVANCE KARBURATOR PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
MAIN SYSTEM 16

18. MAIN SYSTEM 17 ADVANCE KARBURATOR PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
MAIN SYSTEM 17

19. TIPE MAIN JET 18 ADVANCE KARBURATOR PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
TIPE MAIN JET 18

20. POSISI KATUP GAS 19 ADVANCE Throttle position 0 ~ 1/8 1/8 ~ 1/4
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
POSISI KATUP GAS 19
Throttle
position
0 ~ 1/8
1/8 ~ 1/4
Active system
Pilot system
Pilot system
Main system
1/4 ~ 3/4
3/4 ~ fully open
Main system
Main system

21. TINGKAT KERJA KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
TINGKAT KERJA KARBURATOR 20
Air screw & pilot jet
Throttle Valve Cut Away
Jet Needle
Needle Jet
Main Jet
Air Jet
Primary Choke
Gas
Buka
Tutup
Penuh
Buka
Penuh
Komp.
Karburator
1/8
1/4
1/2
3/4

22. PEMERIKSAAN DAN PENYETELAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PEMERIKSAAN DAN PENYETELAN 21
Air gun

23. PEMERIKSAAN DAN PENYETELAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PEMERIKSAAN DAN PENYETELAN
VM TYPE 22
Air screw
Throttle stop screw
Point at which speed begins to rise
Set air screw to halfway point
Point at which
Speed rises
Air screw
return amount 1½ 2½
Rotation speed

24. PEMERIKSAAN DAN PENYETELAN
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
PEMERIKSAAN DAN PENYETELAN
VM TYPE 23
Calipers
Lean
Rich
Needle clip
1 st stage
2 st stage
3 st stage
4 st stage
5 st stage

25. KARBURATOR GSX 250 24 ADVANCE KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
KARBURATOR GSX 250 24

26. KARBURATOR FD 110 XCD 25 ADVANCE KARBURATOR
PT. INDOMOBIL NIAGA INTERNATIONAL
2W SERVICE TRAINING
KARBURATOR
ADVANCE
KARBURATOR FD 110 XCD 25