FCR6 Fin Comb Tool Set for Straighten Air Conditioner Evaporator Condensor Coils

How to use it correctly 1.You can't just stick it in and run down the fins.Start at a point where the fins are ok,and find the right size comb.gently work it in between the fins. Sometimes two fins will stick together, you can straighten that out on a second pass.Once the comb is in,slowly run it down the rest of the way down. 2. If it starts to get stuck, wiggle it a bit. Don't force it too much or you'll tear the fins. 3. If it's hard to get the whole comb in, angle it so that only half of it goes in.then the whole comb goes in. 4.If you have an area where the fins are pushed flat or crushed, you will need to prep it a bit before using the comb. Try to pull some of the fins back out with your fingers (running a finger over the fins usually pulls them out), or use a small screwdriver or utility knife.Pull them up in groups of 3 or 4.You have to get them sticking out a bit before you can run the comb through to straighten them. Don't try to fix it all at once, but start near the outside of the bad area and work your way in, overlapping at least half. It will straighten up. You'll be amazed. 5.You have to have some patience. It took about 1-1/2 hours to do A/C unit. 6. If the A/C (or whatever) has a protective grill over the fins, you'll need to remove that first before working on it.It's very difficult to try to fix it in between the wires of a grill.Often the grill is held on by just a few screws. 7. Once you have this fixed, hose it down to finish the cleaning. But, be careful to spray vertically,not across the fins,or you'll eventually damage the repair you just made.With all the fins straight, it doesn't take a lot of water pressure to clean off the fins.No pressure washers! 8.Sometimes the fins are already torn,or you may tear it no matter how careful you are.The tool will not work over a torn fin--don't try,you'll make it worse.Just work around it.Use a screwdriver or knife to straighten the bad are a bit and move on!