Download Manual How do you replace he belt on a 7447 Sander - Black & Decker BR300 3''x18'' Belt Sander Answers 1 You push in on the front wheel until it clicks. this will lock it in place and allow you to put the sandpaper on. To unlock push in again. Make sure the sander is unplugged. Answers 2 To change belt: 1) Put front roller on floor and push down until roller locks back. 2) Put on new sand paper. 3) Loosen tracking screw until front roller is released. 4) With sander running, use tracking screw to center belt. Answers 3 To change the belt, you must release tension of the rollers by pushing the front roller straight back until you hear it click and lock in position to change paper. Remove old paper and replace with new paper. Make sure if new paper has directional arrows to install properly. Now you must release the front roller to put tension on paper. To do this push the front roller from the side that has the adjustment screw. This will release the front roller and allow it to go back into position. Be careful as it pops back quickly and with some force. Turn on sander and adjust centering of paper with adjustment screw found near the front and side of sander. Answers 4 This is an older model tool, not many parts are available. The problem will continue if you don't address it. The reduction geartrain is "permanently" (not so much) lubricated from the factory with a heavy weight grease. With age, time and enough use these less-expensive gearboxes get hot and the heavier solids separate from the oil base, causing the oily smell you are experiencing and presence of oil. If you are mechanically inclined; I attached a link to the exploded diagram, you can open the geartrain, clean all the old stuff up and if the heat wasn't because the parts are visibly worn; then use a moly-based bearing grease from your local autoparts store (comes in a can, looks like a waxy paste). Coat the teeth so the grease fills the tooth gaps, but don't get carried away. Re-assemble and you should be good to go. Honestly, this is an inexpensive sander, Ryobi makes a value priced model that works great if you choose to replace it verse service it. Here's the diagram link http://www.blackanddeckerservicenet...x?productid=18190&typeId=1379&documentId=1235
