Need Carb Help with KZ750G

Floatbowl vent tubes exit to open air, and are often routed to underneath the seat.

Drain tubes are usually seen attached to the floatbowl overflow nipples, and are often routed over the swingarm to exit underneath the bike.

The ??? in former post might be a separate vent line for the left carb floatbowl.

I don't understand the question about the "strange bolt" or where it's positioned on the pic.

Good Luck!

You can see in the picture where it is labeled fuel line inlet for both carbs is actually not an inlet but a metal bar that the parts diagram calls "joint". You can see where the bar is attached to, but the other end is supposed to be attached to the throttle pulley. you can see the round piece of metal above this area where this bar has to be attached to. It seems that these carbs have individual fuel inlets which was diagrammed as "???". My question is that this bar once attached to the throttle pulley makes the pulley unable to move. If it is attached the throttle can't open or close...so just wondering what the purpose of this bar is....

this is number 70 in the parts diagram

1980 KZ750-G1 LTD twin carbs parts diagram from kawasaki.com

[Click on image to enhance view]



REF NUMBER PART NUMBER DESCRIPTION QUANTITY US CA CN REMARKS

1 16001-1295 CARBURETOR ASSY (Canada) 1 X
1 16001-1187 CARBURETOR ASSY 1 X
2 92037-134 CLAMP,OVER FLOW PIPE 1 X X
3 16001-1257 CARBURETOR,L.H. 1 X
4 16001-1256 CARBURETOR,R.H. 1 X
5 16008-017 CIRCLIP 1 X X
6 16040-019 SPRING,LEVER 1 X X
7 16042-008 PIN 1 X X
8 312B0500 NUT 5MM 1 X X
9 16033-025 SCREW,LEVER 1 X X
10 16022-010 SPRING,THROTTLE ADJS 2 X X
11 16021-020 ADJUSTER,THROTTLE LE 1 X X
12 220B0514 SCREW-PAN-CROS 6 X X
13 214B0516A SCREW-5X16 2 X X
14 16069-003 COVER,DIAPHRAGM 2 X
14 14030-1012 COVER,DIAPHRAGM 2 X
15 16006-030 SPRING,THROTTLE 2 X
15 92081-1080 SPRING,DIAPHRAGM 2 X
16 16055-010 PLATE,NEEDLE 2 X
17 16008-014 CIRCLIP 2 X X
18 16009-070 JET NEEDLE 2 X
19 16059-004 DIAPHRAGM 2 X
20 16076-003 CIRCLIP 2 X X
21 16073-1006 LEVER,CHOKE ADJUST 2 X X
22 16036-017 RUBBER CAP,STARTER P 2 X X
23 16012-1008 GUIDE,PLUNGER 2 X X
24 16013-008 SPRING,STARTER PLUG 2 X X
25 16016-019 PLUNGER,STARTER 2 X X
26 16033-027 SCREW,FLOAT CHAM FIT 14 X X
27 16039-041 WASHER,PLAIN 2 X X
28 16131-1005 BODY,STARTER 2 X X
29 16029-011 WASHER 2 X X
30 92037-072 CLAMP-PIPE 4 X X
31 92059-130 PIPE,FUEL 1 X X
32 92081-1216 SPRING,PILOT SCREW 2 X X
33 16014-1023 SCREW,PILOT ADJUST 2 X X
34 16039-032 WASHER 3 X X
35 16008-015 CIRCLIP 3 X X
36 92059-1096 HOSE,AIR VENT,4.5X25 1 X X
37 16038-021 "O" RING,NEEDLE JET 2 X X
38 16017-1048 NEEDLE JET,#AY-3 2 X
39 11009-1076 GASKET,FLOAT VALVE 2 X X
40 16030-026 FLOAT VALVE ASSY 2 X X
41 92064-045 PILOT JET,#45 2 X
42 16031-030 FLOAT 2 X X
43 16032-003 FLOAT PIN 2 X X
44 16019-029 GASKET,FLOAT CHAMBER 2 X X
45 92063-1061 MAIN JET,#A125 2 X
45 92063-142 MAIN JET,#120 2 X
46 16039-036 WASHER,PLAIN 2 X X
47 92009-1090 SCREW,MAIN JET PLUG 2 X X
48 92059-127 HOSE,FUEL OVERFLOW 1 X X
49 16033-028 SCREW,5X10 2 X X
50 16041-014 SHAFT 1 X X
51 16046-005 SCREW 1 X X
52 16040-009 SPRING,F 1 X X
53 16039-033 WASHER 1 X X STEEL
54 92022-1147 WASHER,PLAIN,DURACON 1 X X NYLON
55 16041-1013 SHAFT,CHOKE LEVER 1 X X
56 16046-007 SCREW,PAN HEAD,5X7 2 X X
57 13168-1062 LEVER,CHOKE ADJUST 2 X X
58 16070-004 BRACKET 1 X X
59 16033-024 SCREW,5X8 2 X X
60 16021-027 THROTTLE ADJUSTER 1 X X
61 16040-018 SPRING 1 X X
62 16073-012 COLLAR 1 X X
63 16063-010 LEVER 1 X X
64 16039-038 WASHER,PLAIN 1 X X
65 220E0420A SCREW-PAN HEAD,4X20 1 X X
66 16041-015 SHAFT 1 X X
67 16040-017 SPRING,THROTTLE CABL 1 X X
68 16074-004 PULLY,THROTTLE CABLE 1 X X
69 16039-037 WASHER,PLAIN 1 X X
70 16046-008 JOINT 1 X X
71 16055-011 PLATE 1 X X
72 16033-026 SCREW 4 X X
73 461F0500 WASHER SPRING 5MM 8 X X
74 461F0400 WASHER SPRING 4MM 1 X X
75 92033-1009 CIRCLIP 2 X
76 92027-1115 RING,JET NEEDLE 2 X
77 92022-1123 WASHER,JET NEEDLE 2 X
78 92081-1126 SPRING,JET NEEDLE 2 X
79 92066-1051 PLUG,PILOT SCREW 2 X
80 92022-1152 WASHER,PLAIN 1 X X
81 92022-1187 WASHER,PILOT SCREW 2 X X
82 92055-1078 "0" RING,PILOT SCREW 2 X X
16-1 13091-1026 HOLDER,JET NEEDLE 2 X
18-1 16009-1051 JET NEEDLE,#4HL14 2 X
19-1 43028-1018 DIAPHRAGM 2 X
31-1 92059-130 PIPE,FUEL 1 X X
36-1 92059-1096 HOSE,AIR VENT,4.5X25 1 X X
48-1 92059-127 HOSE,FUEL OVERFLOW 1 X X

Hook-ups apparantly different from the 4 cylinder CV's as shown in this pic.

[Click on image to enlarge view]

Guessing the following is correct (but possibly have fuel lines and vent lines reversed). And remain uncertain as "joint" #70.

So apparently this joint attaches the throttle pulley to another mechanism that opens and closes the throttle body. Unlike most carbs where the throttle pulley is directly attaches this one seems to use this metal joint. So after figuring this out I tried to forcibly move the throttle bodies open and close and it worked, it does move. But...and this is a huge but....it takes A LOT of force to open and close them. So it makes me think that once i attach the throttle cables its going to take a lotta effort to open and close the throttle. Any suggestions in how to make this part more movable>?

No eBay APP ID and/or Cert ID defined in Kunena configurationNo eBay APP ID and/or Cert ID defined in Kunena configurationAm not familar enough with these carbs to be of much assistance.

Don't see a FSM currenly offered on enay, but did notice the following, both at "Buy it Now" prices:

120418795798

370199747611





Good Luck!

Looks like a spring goes on that weird bolt