manifold boots came off but found something, please help

[Anonymous]

idle stop adjustment knob??? & carb sync

1) the Idle stop adjustment. Where is the starting point on it to be set? or is there a starting point?

2) is there instructions on how to sync the carbs when I am done and what tool(s) i will need? thanks cj

[earlfor]

Re: idle stop adjustment knob??? & carb sync

For the idle stop knob, I normally turn the knob in until it makes contact with the plate and will begin to move the linkage. At that point, I turn it in about two turns as a starting point, then start the bike, and adjust as needed. There really is no spec starting point. Just turn it in or out until you get the idle rpm you want. That is usually around 11-1200.

To synch the carbs, you will need a set of mercury stix and a 5 mm allen wrench to unscrew the vacuum plugs on the intake minifolds. You can get a mercury stix from cyclerecyle (crc2online catalog)

There isnt any itemized list of steps that I know of for synching carbs. If you decide to do your own, when you are ready, just give a yell and we will walky you through it while youre in the process. The first couple of times, it probably will seem a bit confusing, but trust me, :-) it gets much easier with little practice. It only takes me about 5 minutes on average to synch a bank of carbs. :-)

http://www.crc2onlinecatalog.com/Index_Main_Frame.htm

Earl

[Anonymous]

where do you find a measuring rule for floats?

Does anyone know what the float should be set at? With car carb kits it comes with a gauge to check float but motorcycle one did not. Where do I find? thanks and I think I am done bothering you until its together with either good news or bad. lol thanks cj

[earlfor]

Re: where do you find a measuring rule for floats?

I dont have a book on an 80 850GL, but being an 80, I will assume it has CV carbs. Commonly, CV carb float levels are set to 21 to 23mm. The height is measured with the carb upside down with the float tang resting on the float needle assembly which will be holding it in the closed position. The distance is
measured from the float bowl gasket surface of the carb body (without a gasket in place) to the top of the float. I usually just cut a stiff piece of cardboard or a corner off a note card making the "guage" an L shaped piece of cardboard.

Its not a bother at all. :-) It wouldnt be much of a tech section if no one had a question. LOL Anything at all, feel free to jump in here. :-)

Earl



quote="cjexotic"]Does anyone know what the float should be set at? With car carb kits it comes with a gauge to check float but motorcycle one did not. Where do I find? thanks and I think I am done bothering you until its together with either good news or bad. lol thanks cj[/quote]

[Anonymous]

ok mm to cm

are there 10 mm to a cenimeter? cj

[dgeorge]

Re: ok mm to cm

are there 10 mm to a cenimeter? cj

yes. Also if you have an inch pound torque wrench 6' pounds = 72" pounds.

[KEITH KRAUSE]

Re: manifold boots came off but found something, please help

Well Keitheretta, if it makes you feel better, you're a close 2nd. :-) :-)

Earl

The best person on this site at rebuilding and tuning carbs is a woman. :-)

Who are you talking about Earl?

Keitheretta?? 8O :? OK, Earleen.
Close second? Not possible. At least on the rebuilding part.
As for tuning, I'm sure some others have more knowledge with a greater variety of carbs and models, so if that makes me second...

[KEITH KRAUSE]

cj, a little more info regarding preparing for a carb synch.
Get a couple of fans. Don't over-heat the motor if it takes you a while, being new to synching?
For the fuel supply, I use the gas tank sitting on my workmate bench. You'll need some extra fuel (5/16") and vacuum line if you do this. Others use a small reservoir for the fuel and hang it on the bars.
Warm up the bike first, then attach the vacuum tool. After observing the initial levels, it's generally easier to adjust the higher vacuum level(s) down, to match the lower ones.
Going by the book, the ignition timing and valve clearances must be correct to get the most accurate synch too.

[earlfor]

Re: manifold boots came off but found something, please help

Well, its either 2nd or 3rd. I'm not sure. :-) :-) :-) :-) :-)

Earl

Close second? Not possible. At least on the rebuilding part.
As for tuning, I'm sure some others have more knowledge with a greater variety of carbs and models, so if that makes me second...

[Anonymous]

can't find why its leaking

in the float bowl, there is a float needle that the float pushes against to close the valve which stop fuel from entering the bowl. The needle drops into a brass insert. The insert is a mild press fit. Removing the insert, you will find that the insert sits on a small "O" ring. When the float needle drops into the brass insert, it is this small "O" ring that is the fuel inlet seal.

I took the carb apart and I had put the o-ring on this insert that the float needle sits in. I replaced it incase there was something wrong with it. The float is at 22mm, so that is in its range. I made sure all other jets were ok and where they belonged. I put it back together yesterday to only have it to still be leaking. It is together like the other 4 (as I took them apart again to check). The other three are find but number 1 wants to dribble.

Any other suggestions
thanks cj

[Hoomgar]

Re: manifold boots came off but found something, please help

Sorry Mark, no beer for you for 30 days. :-)

Earl

Peppermint Pattie I believe

All right then Earl, tell us who it is man! Come on! Please

[Hoomgar]

Re: manifold boots came off but found something, please help

As for tuning, I'm sure some others have more knowledge with a greater variety of carbs and models, so if that makes me second...

This is the sole reason I bought the bike I did. Just because I knew it had the carbs on it that Keith specialized in

[ptm]

Re: can't find why its leaking

I put it back together yesterday to only have it to still be leaking. It is together like the other 4 (as I took them apart again to check). The other three are find but number 1 wants to dribble.

Any other suggestions
thanks cj

Is it leaking through the vent/overflow hose? I had that happen after doing a complete carb rebuild. The first time it happened I took them off again and replaced the needle and seat on that carb. When I put them back on another one started doing it. I tapped the bowl of the offending carb with a block of wood or screwdriver handle and that 'fixed' it. I think the float had become slightly cocked in the process of putting the carbs back on and the tapping was enough to get it unstuck. Worth a try, and and you can quickly see if it works, just don't hit it too hard.

[Hoomgar]

Cj, do you maybe have a worn float needle or needle seat? Your saying it is leaking gas right? If you have even the smallest particle of anything in the float needle area it will stop the needle from shutting off the gas. Has anyone asked you to check your petcock to see if it is shutting off correctly when the engine is not running?

[Anonymous]

can't find why its leaking

ok, 1st its leaking out the boot into the air cleaner.
I will try taping on the carb bowl to see if the float stuck when putting carb on.

2nd: It is a total rebuild except for the jet(?) directly under the main jet.
When I took the carb off to see why it was leaking I took the needle seat out and put on another new o-ring and used air to blow it out to make sure nothing got in there. then put the needle back in and then the float.
I measured the float in case I put a finger on it and took it out of line when putting it back together but it is in its tolerance level.

I will try this taping on the bowl when I get home. Makes sense that it could have gotten stuck while putting it back on.

cj