impact wrench wont budge blade bolts

I just got a corded Black & Decker 1/2" drive impact wrench.
$60.00
It wont budge the blade bolt.
I dont see in the manual how many ft/lbs i've got
I've never handled one before, but this one seems a bit...weak?

I dont want to do this manually.

I guess I simply need a bigger / stronger wrench?

I'm open for suggestions.

 

invest in an air compressor and nice air impact wrench for the shop/garage. a compressor is a great tool to have around too

 

Ran into same problem,1/2 impact wouldn't budge em..Had to wedge a 15"cresent under deck,then put a 5ft cheater pipe on long handle ratchet..We whooped it,but I have NEVER seen anything like it before..

 

Dewalt has an electric and a cordless (battery) impact wrench that will work with no problems. The real problem here is that B&D is very poor quality. Even though Dewalt is make by B&D, Dewalt is their commercial line. What you are trying to use is a homeowner tool and it's just not powerful enough.

 

Bring it over, my IR Thundergun will get them out If a compressor and good air impact is out of the question, you need to move on to a better cordless.

 

torch it off

 

i have a makita 12v 1/2 drive cordless impact gun, it works great. i use it for takin off mower blades, changin edger blades,work in on the quad thing is great. it came in real handy last winter when i got a flat plowing on christmas night.
i highly recommend it.

 

Something I always do also is put some anti-seize on the bolts before tightening them back up. I use that stuff on everthing I swear by it, works great. Comes in a really small tube but you dont need much.

 

The Black and Decker electric impacts normally put out around 240 ft. lbs of torque. When you do get these seriously over-torqued blade bolts loose can I suggest that you use a torque wrench to reinstall them as per manufacturers specs? It really makes things a lot easier.

 

i think you better check your source of info again, dont mean to flame but i seriously doubt a cordless gun puts out more power then an air gun.
besides most cordless guns are rated in INCH pounds.