Carb OEM specs as per factory manuals

[Burque73]

Hi!

Does anyone have carburetor specs for a 1985 GS700ESF?

Thanks in advanced,
Andre

Lets see if this works. I've been following your search for answers on this and found specs in the GS 700 manual linked to on Cliff's site.

GS 700 carb specs.jpg

Rats, it's too small to blow up. Check here though.http://zeus.mtsac.edu/~cliff/storage...ice_manual.pdf

[DR3]

Lets see if this works. I've been following your search for answers on this and found specs in the GS 700 manual linked to on Cliff's site.

[ATTACH=CONFIG]61084[/ATTACH]

Rats, it's too small to blow up. Check here though.http://zeus.mtsac.edu/~cliff/storage...ice_manual.pdf

Cool, thanks Roger! I also found this:

http://gsarchive.bwringer.com/bikecl...at_height.html

Not sure why my jets are different than the specs. Could it be because the previous owner had a K&N filter in the air box? I got K&N pods and a Dynojet kit which calls for the Main Jet to be 130. Would I need to change other jets for this reason and if so what do I put if the Main Jets are 130? This is what came on the bike when I bought it:

"(in parenthesis)" = Chart/Manual specs

Main Jet: #120 (#122.5)
Main Air Jet: ? (1.7 mm)
Jet Needle: 5D10, but with the kit its a DNT604 (5C-28)
Needle Jet: Y-7 (Y-5)
Pilot Jet: #40 (#37.5)
Throttle Valve: 135 (manual says 135, but not chart... weird)
Pilot Outlet: ? (0.7 mm)
Valve Seat: ? (2.0 mm)
Starter Jet: ? (#45)
Pilot Screw: 2.5-3 turns (pre-set)
Pilot Air Jet: 155 (chart not specified, manual says pre-set, part #09493-3200 says 160)

I would like to know the ones I have "?" marked. How can I find these? Starter jet, is that the one that's built in, for the choke?

[Pastychamp]

Hello mate. I got hold of a '79 850 and did the same. Did you work out the turns to get the mix initially right? And the needles? If you had any success and can remember the settings, it would be really cool if you can divulge. I'm over in the UK in Cornwall so it's probably night time over your side. Hope to get a response from you soon. All the best.

[Robyle3]

LOTS of pages here so I don’t know if it’s been posted before (did a few searches so I’m fairly confident it hasn’t lol).

GS 550 L
1983
Mikuni BSW30SS Model

Carb (2 separate carbs, twin bore)
bore size 30mm (1.2in)
id no 43510
idle r/min 1100 +/- 100r/min
fuel level 6.5mm +/- 0.5 (0.26 +/- 0.02)
float height 20.5mm +/- 1.0 (0.81 +/- 0.04)
Main jet: cyl 1 and 4 #95 cyl 2 and 3 #105
Main Air jet 1.0mm (0.04in)
jet needle SC64-1
Needle Jet P-3
Throttle valve # 120
Pilot Jet #35
By-pass 0.8/0.7/0.8/0.8mm (0.03/0.02/0.03/0.03in)
Pilot Outlet 0.7mm(0.02in)
Valve seat 2.5mm(0.10in)
Starter jet #55
Pilot Screw............. pre-set
pilot air jet # 150
throttle cable play 0.5-1.0mm(0.02-0.04in)
choke cable play 0.5-1.0mm(0.02-0.04in)