convert your non yics engine to a yics, 20 minute job

Sorry, got off topic. I will try elsewhere

 

It won't make any difference if you don't build it correctly and most of the plans floating around the 'net are wrong, and miss an important consideration. The tool has to seal the port it's inserted in; in other words seal tightly against the outside of the passage when in place, sealing off the passage from the outside.

Further, once the carbs are IN sync, it won't make one bit of difference. (I've tried this experiment already.)

Where it makes a difference, is in the adjusting. YICS will "mask" an imbalance, with the tool in place an imbalance cannot hide.

You can get the carbs balanced without the tool but it will take a lot longer and they will most likely never be perfectly balanced. Not to mention the frustration factor of the longer adjustment sequence.

 

"You need to get the reading from cyl 2, and then adjust the others to match it".......ahhh, i'm pretty sure it's #3
Hay Fitz, .........never mind

 

Polock... yeah, I know, I know. Don't even go there. Neverminding now :wink: :wink: :wink: And you're right, #3 is the baseline carb.

 

Looking from the back of the bike, I read the carbs from left to right (see image). #3 is not adjustable, so I take it whatever this one reads on the gauge, the others have to match.

 

Sitting on the seat, facing forward (like you are riding the bike), the left outer carb is #1, and as you move the right, you'll come across carbs #2, then #3, and finally #4, which is the far outer right side carby.

The number scheme in the diagrams above is exactly backwards!

The vacuum line from the petcock goes to the # carb.

 

My mistake, sorry chacol. I will ammend.

Diagram now ammended

 

A friend of mine had the following conversation with someone recently:
"excuse me, we're a little turned around, which way is east?"
"well, it's pretty late in the day and the sun is over there so I'd say roughly that-a-way"
"oh, we're not from around here"
*amused smirk* "just where ARE yall from then?"

And so it is with cylinder/carb numbering. The bike's number three carb will always be the bikes number three carb as sure as the sun sets in the west. Whether you happen to be lying on your back looking up at your bike or standing on your head or of in the kitchen making a sammich. They're still numbered 1 to 4, port to starboard.

Also on ANY carb bank, the baseline is the carb that has the throttle cable tugging directly on it. All the rest are tied to this one with lash compensator screws. For ours this happens to be the third from the left (second from the right) as you look down as if seated and riding. The #3

 

Sorry about the 2/3 cylinder to sync to mix up....i'm on the other side of the world from my bike and manual right now!!

 

*chuckle* so you're in that "not from around here" category?
quite alright.

 

Hmmm, I linked all my vac hoses together years ago for the simple reason that the one header pipe was turning more blue than the other three. So I figured that if they were all hooked up then it would turn them all the same colour of blue.

 

I'm lucky, my garage is right behind my house :lol: :lol: