James,
Not sure of the exact details of the Delta, but here's what I do on the Elu. I'll go right from taking the blade off to putting it back on, as then there's a chance I won't miss out anything vital.
1. Pull out the plug etc. Remove the table insert, back off all the guides top and bottom, flick back the wotsit that keeps both halves of the table flust either side of the slot.
2. Crank the tension right off (I've tested to see how far I can go without the wheel dropping off and then marked it on the tension indicator, so I go right down to that line). Open up the door/s and adjust the top wheel tilt right over so that the top of the wheel is pointing away from the machine. Move the top wheel round by hand and the blade will naturally pop off. Short sleeves are not advised for this step...
3. Remove the blade dodging all the guides, slot etc etc. Fold or disgard as required.
4. Make sure the new blade has the teeth pointing
down and retrace the steps you just did with the old blade. Through the slot, twist round so the teeth are facing the right way, between the guides.
5. Place the blade on the bottom wheel first, and as much of it as possible on the top. This may not be much, but with the tension off you should get a little give from the spring to help you. Revolve the top wheel by hand and gradually feed the rest of the blade on. Don't go too far or the tilt of the wheel will push it off again. I tend to wear gloves for this, and also to wish for 2 or 3 extra hands. Be patient; it'll get there. Sometimes I take two or three goes to get there.
6. Tilt the top wheel back to vertical again so the blade doesn't pop off and crank up the tension. Adjust the tilt to get the blade running in the correct place on the wheel tyre and adjust the guides too. Close up the doors, turn on the juice and see how it goes. If there's a big bang, you forgot something...
I hope that helps a bit, James. Sorry for covering it all, but I just know I'll forget something if I don't write it as I do it. And even then...
Cheers, Alf
P.S. So you don't change the blade depending on the work then...? Tsk tsk :wink: