first of all ,i would not go back shopping at Screwfix, if this is the best that they can do?? you might need a friend to hold the grinder for you, if you move the gard to the back of the grinder it will help you get at the blade. HOLD IN THE YELLOW BUTTON, and turn the blade by hand ,till it locks"now use the wrench to turn it, BUT MAKE SURE" your turning it the (right) way, as a lot of grinders turn Clockwise to open , as it would unlock itself when in use, so try open it , if you can fit a pipe steel pipe over the wrench, it will give you more power when turning it, but you will need somebody to help you, but just make sure your turning it the right way, try it clockwise to open , and not anticlock,
k
October 2011
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