Help! Carb assembly issues.

[GS Yarman]

I have recently received a 79 GS850G for free with title. I decided to start working on it this weekend. Long story short the bike was in pieces when I received it, I am not an expert on carbs and all 4 are apart. I have cleaned and put new o-rings on all parts. What I have run in to is the carbs are not numbered and I have know idea to determine which carb is 1 - 4. Any suggestions would be helpful.

 

[60ratrod]

carbs 2 & 3 will have tabs on both sides of the throttle linkage to attach to the other carbs. carb #3 will have the bracket for the throttle cable to hook into, and that will go between carbs 2 & 3. carb #1 will have a tab that hooks into carb #2's throttle linkage, and carb #4 will have the same that hooks into #3, but no tabs on the other side, just e-clips. if you look at the carbs from the airbox side, the BIG side, it will go 1, 2, 3, 4. the small end is what plugs into the cylinder head. here's what the carbs look like all hooked up from the airbox side

 

[Guest]

There is an excellent tutorial on Cliffs site with pictures

 

[tkent02]

Wrong carbs, a '70 should have VM carbs. #1 and #4, the fuel passage is only drilled to one side, that is the inside. #4 has a float bowl vent, #1 does not. Of the other two carbs, #3 is the one which has the vacuum port which is drilled through to the carb bore, #2 is the one with the float bowl vent..

 

[GS Yarman]

Thanks for the help I have got the carbs put back together now and everything seems to be in order.

 

[Easyrider290]

Hi

What to I connect the two ports on either side of the carbs (between 1 and 2 and 3 and 4). I've the fuel going into the middle section but am at a loss.

If I blow through the two ports, fuels comes out of the little brass jets on the air intake side.

Thanks.

 

[gustovh]

The two ports that you describe are vents and should have a couple tubes off them that leads back behind the engine in case of overflow.

V