Blanco Kitchen faucet -- cannot remove spout ---have removed cartridge and nut

YES. USE TAPE WRAPPED SLIP PLIERS

you can buy this wrench at a plumbing supply store

You have to take the chrome cover off the valve and then you can remove the retainer clip.

you need to remove the moen cartridge. first, remove handle. at the top of stem, there is a U shaped retainer clip. it hard to see,use a small knife blade to catch the closed side of clip and slide clip out. once clip is removed, you should be able to pull cartridge out with a twist and pull motion. if it wont come out,that way dont pull to the point where you brake cartridge. that means replacing faucet. in extreme cases, you ca buy a moen stem puller for about $15. once stem i out simply coat with stem grease and replace cartridge. when replacing retaining clip, keep a pushing in pressure on end of stem to allow clip to slide into place. it iseasier to do than it sounds

These faucets can leak in three different places:

1. Internally at the valve seat
   You'll see water dripping from the spout. This means the rubber washer is worn or damaged. To replace the washer, remove the decorative cap from the handle. Remove the retaining screw and pull off the handle. Remove the decorative cover, called an escutcheon, if there is one. Unscrew the packing nut counterclockwise. Unscrew the valve stem and remove it. Remove the screw that holds the rubber washer in place. Because these washers come in many shapes and sizes, you'll want to take the old one to the hardware store and buy an exact replacement. Be sure to buy two washers so you'll have one for the other valve. Replace the washer and reassemble the faucet.
   
2. Around the handle
   If you see water coming from below the handle, the packing nut is leaking. Older faucets have a string-like graphite packing material wrapped around the stem. Newer faucets use an O-ring. First try tightening the packing nut clockwise... about one-half turn. If this doesn't stop the leak, remove the packing nut and replace the packing or O-ring; then reassemble the faucet. If the valve is using the graphite packing material, it might be a clue that you should shop for a new faucet.
   
   
3. Between a pivoting spout and the body
   The spout might be held in place with a packing nut, similar to the faucet stem, or it might have a nut at the top of the spout. In either case, remove the spout and replace the packing material or the O-ring seal. Then reassemble the faucet.

Single lever faucets also are known as "washerless" faucets. They are easier to repair than compression faucets after you determine what type of faucet you have. There are three types of washerless faucets: ball, ceramic disk and cartridge.
Leaks are evident in two places... dripping from the spout and seeping from around the spout where it joins the body of the faucet.
Leaks from the spout indicate that the ball, disk or cartridge is leaking. To repair, turn off the water to the faucet, then remove the handle. The handles on ball-type faucets are held in place with a setscrew that requires an Allen wrench to loosen. Ceramic disk and cartridge-type handles usually are held in place by a screw hidden beneath a cap.
On ball and ceramic disk-type faucets, remove the ball or disk and replace the seals. You can buy replacement kits for these faucets at the hardware store or home center.
On cartridge-type faucets, remove the spout and pull out the retainer clip that holds the cartridge in place. To remove the cartridge, pull on the cartridge stem with a twisting motion. If it resists, install the handle so you can a better grip on the cartridge to pull it out. Take the cartridge to the hardware store or home center and purchase an exact replacement kit.
Reassemble the faucet according to directions.
Leaks at the spout-to-body joint indicate an O-ring failure. Disassemble the faucet as described above. Remove the spout sleeve and replace the O-rings. It's a good idea to replace these seals if you have the faucet disassembled for repair of the ball, disk or cartridge.

The base of spout is like a nut unscrew then lift off spout install new o-rings be sure to use plumbers grease or vaseline to coat new o-ring ,reinstall as was disassembled that should take care of problem.You may need a strap wrench to remove spout base nut.

If you have a payless cashways in your area they carry americanstd. faucets and plumbing fixtures.I think that some K-Mart and sears stores do also. Hope this helps you. Thanks

Try this useful specs from Blanco ---->LINK .

Remove the aerator at the end of the spout. It will unscrew and once off it will have a dime sized restricter in it that can be removed this restrict's the water down to about 1.6 gpm to save water.
It will either be plastic or metal and about the size of a dime with a small holw in it to let water pass by maybe 1/8" hole just remove it and put aerator back together.

Clean aerator screen out before you put it back together.

http://www.plumbersurplus.com/pdf/07163.pdf This link has a breakdown of parts. Look at parts 8b-10 for aerator breakdown.

You need to remove the handle and then remove the top cover to the housing. After the cap is removed you can pull off the spout. It probably needs new washers. You will see what you need to fix it at this point. Just remember to turn off your water before doing this.