Help with an unlikely choice

[jimbyjimb]

I actually, as always, got advice right here on the site! In the tech tips section!

Go to Petco, or some such, and get a four-way vacuum valve for 2-4 bucks. Get approprite vacuum line. Now, I suggest reading the tech tip article:

http://xs11.com/xs11-info/tech-tips/...chronizer.html

I made the buffer tube and it works great, but I actually don't use it anymore as I just follow the Yamaha procedure in the manual. As with anything I'm sure there are members here who are anal about having their carbs perfect, but a vacuum guage does a good enough job for me as my bike runs like a top.

You can hook up a gauge to each cylinder as well if you have a surplus of vacuum gauges or something, but the aquarium valve works beautifully if you only have one gauge.

[crazy steve]

Can you give a procedure for doing this with a vacuum gauge. I just got my carbs together yesterday and i was worried about syncin them. I do have a good vacuum gauge and tools at home to do it if i just had the knowledge to go with it.

Whomp up one of these using your vacuum gauge.....
http://www.xs11.com/forum/showthread.php?t=986
.... cost will be under $20, they work great....

[jimbyjimb]

JINX!

Haha! Now you can't post til I unjinx you...

[GTXS1100]

That tells me how to make it but it doesnt tell me how to do it.

[jimbyjimb]

Get a copy of the repair manual for starters;

Off the top of my head,

Remove seat and fuel tank, or if your fuel lines are long enough prop rear of tank up with 2X4.

If you have to remove the tank, turn the tank around backwards and hook fuel line with a 'T' in it to the front (of the tank, not the bike) facing brass line from the petcock.

Turn gas valve to 'PRI'

Get bike to operating temperature.

Once at temp sync carb 1 to carb 2.

Sync carb 4 to carb 3.

And either 2 or 3 is the master, can't remember which, but get 1,2,3,4 at the same vacuum by adjusting the center screw.

Set your idle speed (MUST be at operating temp to set correctly!)

Check sync.

Set idle mixture.

Check sync.

Rinse and repeat where necessary.

Sync screws are located on the throttle shaft. Idle speed adjustment is underneath the throttle cable and is adjustable by hand. Idle adjustment screws are on the engine side (not airbox) of the carbs and are brass (mine are, anyway) and inset into the carb body vertically.

Before messing with the idle screws I suggest counting turns beforehand so at worst you can get them back to where they were before you messed with them.

[crazy steve]

One thing you'll find when using a vacuum gauge is the needle will want to swing back-and-forth a lot. Using the aquarium valve, open it, then slowly close it until the needle steadies. Some have installed a restrictor in the vacuum line to the gauge to damp this, but adjustment of the valve(s) will do the same thing. Having the large 'vacuum can' helps with this also.

[jimbyjimb]

GTX,

If you just did a rebuild you really ought to cruise over to the tech tips section of the site. If the bike ran ok before you rebuilt you can probably bolt them on and it'll fire BUT it'd be a good idea to do a bench sync which is covered in the tech tips.

Also, I believe somewhere on here somebody had a downloadable digital manual. You might want to check into that. All the proper procedures for maintenance are in there, and once you read through and go for it if you have additional questions do a forum search and/or ask for help here.

Syncing is one of those things I've heard a lot of people make a big deal out of and I'm sure under the right circumstances it could be annoying, but it's a simple time consuming process. Just do it slowly as engines need a little time to adjust to changes. You can close or open the throttle plate on a sync job and get your vacuum, then check again after making no adjustments a few seconds later and see that it isn't right, so adjust slowly.

[GTXS1100]

I guess i just need to bite the bullet and print the whole manual. I usualy just look up and print only the section that envolves what im doing except in this case i didnt.

[DGXSER]

it'd be a good idea to do a bench sync which is covered in the tech tips.

Not sure if this was your intention Jimby, but it is an all to common misconception that a "bench Synch" is all the synch that is required. Getting the throttle plates evenly open before you mount them up will help get the bike running, but a running synch is required for proper tuning.

[daveyg]

Back to the original topic, scour Craigslist for a jap trail bike. In my area there r 3 different xr600/650 and a xt350, each for 900 bucks or less, one of these would be more than capable of street and dirt flogging on a daily basis, and allow u the opportunity to keep the 11 for spirited weekend pavement pounding.