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. The reduction geartrain is "permanently" (not so much) lubricated from the factory with a heavy weight grease. The problem will continue if you don't address it. This is an older model tool, not many parts are available. Turn on sander and adjust centering of paper with adjustment screw found near the front and side of sander. Be careful as it pops back quickly and with some force. This will release the front roller and allow it to go back into position. To do this push the front roller from the side that has the adjustment screw. Now you must release the front roller to put tension on paper. Make sure if new paper has directional arrows to install properly. Remove old paper and replace with new paper. 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. Answers 2ġ) Put front roller on floor and push down until roller locks back.ģ) Loosen tracking screw until front roller is released.Ĥ) With sander running, use tracking screw to center belt. this will lock it in place and allow you to put the sandpaper on. You push in on the front wheel until it clicks. Download Manual How do you replace he belt on a 7447 Sander - Black & Decker BR300 3''x18'' Belt Sander
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