1: Open the door, Insert abrasive hose through rubber retainer , adjust the
abrasive hose ,avoid sharp bends to help prevent excessive wearing of the
abrasive hose , next secure the abrasive hose with hose clamp( use
M6X12mm bolts and M6 nut)
2: Assemble abrasive hose and #4 abrasive tee joint, seal thread with Teflon
tape.