Carb OEM specs as per factory manuals

[Matchless]

It'll take a few days due to spotty internet connectivity, but I'd welcome "doing" the carb specs for the 82-83 GS1100 2-valve series of models. I have a Factory Service Manual and hardcopy of the microfische. I also have a FSM (no fische, but that's all on the internet anyhow) for early (points/condenser, kick-start) GS850 series, too. I read some of the the thread, but got lost in all the web-lingo. What format, sent to whom?

You can post the info in a thread or send me a PM and I will add it.
I need the model, and year of the bike, all the carburetor info as given in the factory manual as well as the jet sizes. See post #136

Thanks

[Ranger]

BUMP

Still no info for a GS700 as far as air screw? Preset is worthless..

[BassCliff]

BUMP

Still no info for a GS700 as far as air screw? Preset is worthless..

Hi,

What you call an 'air screw' is actually an idle mixture screw. If you start with them set about 2.5 turns out from lightly seated, then use the "highest idle" method to fine tune them, you'll be good to go.



They may not be set all the same due to differences between each individual carb.


Thank you for your indulgence,

BassCliff

[stephendotexe]

First post! Great resource here. I looked all over the web for a repair manual for my 83 Suzuki GS750ES. I eventually coughed up the dough for a PDF. Here's what the manual says for my bike:

Carburetor Information For a 1983 Suzuki GS750ES

Carburetor Type: MIKUNI BS32SS
Bore size: 32 mm (1.3 inch)
I.D. No. 06A00 (06A10 for CA)
Idle r/min. 1,150 ± 100 r/min
Fuel level 5.0 ± 0.5mm (0.20 ± 0.02 in)
Float height 22.4 ± 1.0 mm (0.88 ± 0.04 in)
Main jet (M.J.) #122.5
Main air jet (M.A.J.) 1.7 mm
Jet needle (J.N.) 5C-28
Needle jet (N.J.) Y-5
Pilot jet (P.J.) #37.5
By-ass (B.P.) 0.8, 0.8, 0.8 mm
Pilot outlet (P.O.) 0.7 mm
Valve seat 2.0 mm
Starter jet (G.S.) #45
Pilot screw (P.S.) PRE-SET
Pilot air jet (P.A.J.) PRE-SET
Throttle valve (Th.V.) #135
Throttle cable play 0.5 - 1.0 mm (0.02 - 0.04 in)
Choke cable play 0.5 - 1.0 mm (0.02 - 0.04 in)

[cmn1771]

this is from the original post:

GS550 (80-82) the specs are for the CV's

idle r/min 1100-+/-100r/min
carb mik bs32ss (4 seprate carbs)
id no 47160 (us) 47170 (can)
bore size 32 (1.26)
float height 22.4.+/-1.0 (0.88 +/-0.04)
fuel level 5.0+/-0.5 (0.20 +/-0.04)
main jet #92.5
main air jet 1.6
jet needle (4bel2 us model) (5f42-3rd notch canadian adjusable needle)
needle jet x-6
pilot jet #40
throttle valve #135
by pass (0.9, 0.7, 0.7 us model) (1.0,0.8,0.8 canadian)
pilot outlet 0.7
valve seat 2.0
starter jet #35
pilot screw 3.5 turns back (mixture screw)
pilot air jet (us model #150) (#120 canadian)


am i reading this right??? you mean that the fuel/air mix screw should be 3.5 turns out? i had read somewhere else that it was 2.5 turns out. just want to clarify please.

thanks
matt

[cmn1771]

anyone??? 3.5 turns out just seems like a lot. anyone know for sure??

thanks
matt

[BassCliff]

Hi Mr. cmn1771,

Start somewhere around 3 turns out and adjust using the "highest idle method". You'll find information on my website or by searching the tech sections.

Just so you know, this is a specification thread. If you have questions about YOUR carburetors, feel free to start your own thread and ask away.



Thank you for your indulgence,

BassCliff

[Tom R]

A little more compact version.

members.shaw.ca/johnwightman/images/SuzCarb.xls

[johnmackay70]

I just picked up a 1982 GS850G (and it came with a 1982 Suzuki GS850 Service Manual...published by Suzuki Motor Co)

1982 GS850G
----------------
Carb. type: Mikuni VM26SS
Bore size: 26 (1)
I.D. no. 45100
Idle rpm/min 950-1150 rpm
Fuel Level 3-5 (0.12 - 0.2)
Float height 23-25 (0.91-0.98)
Main Jet #102.5
Main air jet ??? if this is the cutaway, it is 1.5
Jet needle 5DL36-2
Needle jet 0-4
Pilot jet #15
By pass 0.8
Pilot outlet 0.6
Valve seat ???
Starter jet #32.5
Pilot screw pre-set
Pilot air jet 1.2
Throttle cable play ??
Choke cable play ??

[BassCliff]

Hi,

I need help, I have a 1981 gs850 that is just bought and someone screwed with the pilot screw due to a carb boot leak on cyl 4 which is now fixed, I know the hanes says preset for the turns out but what is the preset turns out for the US pilot screws or fuel screw i guess is what it is called.

Start a new thread for yourself in the carb section. This is a specification thread, not a "help" thread.

Thank you for your indulgence,

BassCliff

[saltcitytattoo]

Ryan, here are the numbers for the 82/83 GS1100

GS 1100
1982-83
G, GL, GK Model

Carb ???????. Mikuni BS34SS (4 separate carbs)
bore size ?????. 34mm (1.34)
id no ???????. 49400
idle r/min???.... 1050 +/- 100 r/min
fuel level ?????. 5.0mm +/- 0.5 (0.20 +/- 0.02)
float height ???? 22.4mm +/- 1.0 (0.88 +/- 0.04)
Main jet??????. #115
Main Air jet????? 1.7
jet needle?????.. 5D58
Needle Jet?????? X - 3
Pilot Jet??..????. #40
By-pass?.?????? 0.9, 0.8, 0.8 (0.04, 0.03, 0.03)
Pilot Outlet?????? 0.7
Valve seat?????? 2.0
Starter jet?????? #50
Pilot Screw............. PRE-SET 2 turn outer carbs 2.5 turn inner carbs
Pilot Air Jet?????..#170
throttle cable play ?. 0.5 ? 1.0 (0.02, 0.04)
Choke Cable Play??. 0.5 ? 1.0 (0.02, 0.04)

this is what i found on my untouched carbs

[alleyrat]

I have a gs450LF and need to know what jets I should run with pod cleaners and a after market exai
Ust similar to stock

[william_henry]

The airbox and filter must be on, must not be leaking air (sealed properly) and any rubber snorkels or whatever must also be present. If you have pods then you will not be able to use standard jettings. The carburettors must be cleaned, preferably dipped overnight and all rubber o-rings replaced as well as any intake o-rings if used.

It goes without saying, that the valve clearances, spark, and compression must also be in order.
If the above is not in order you will be chasing your own tail, when trying to adjust the idle mixture

I dont have the airbox assembly on my bike so im putting the pods on. Do you know what jets i should put in? and where is a good place to get them? I have a 82 gs550 with cv's
-thanks

[BassCliff]

Hi,

As a reminder, this is a SPECIFICATION thread. This is not a "help" thread. If you have questions about your carbs, start your own thread so the experts can help you.


Thank you for your indulgence,

BassCliff

[nooblet]

Does anyone have the carb specs for a 1986 GS550ES? It has the siamese carbs. Looked but can't seem to find it here.



They are Mikuni and have 43660 stamped on the side