Whirlpool MH1170XSB Installation Instructions - Page 8

NOTE: Secure the mounting plate to the wall at all 4 corner holes drilled into the wall studs and/or drywall using either 1/4-20 x 3" round-head bolts and toggle nuts or 1/4 x 2" lag screws. Refer to illustrations in "Possible Wall Stud Configurations" in "Locate Wall Stud(s)" section. No Wall Studs at Corner Holes (Figures I & 2} NOTE: The mounting plate must also be secured to the wall on at least 1 wall stud as well as at all 4 corners. 1. With the support tabs of the mounting plate facing forward, insert 1/4-20 x 3" round-head bolts through all 4 corner holes of mounting plate. 2. Start toggle nuts on bolts from the back of the mounting plate. Leave enough space for the toggle nuts to go through the wall and open. A. 1/4-20 x 3" round-head bolt B. Mounting plate C. Spring toggle nut 3. Position mounting plate on the wall, making sure that the top of the mounting plate is aligned with the front edge of the upper cabinet. 4. Push the 4 bolts with toggle nuts through the drywall, and finger tighten the bolts to make sure toggle nuts have opened against drywall. C One Wall Stud at Two Corner Holes (Figure 3) 1. With the support tabs of the mounting plate facing forward, insert 1/4-20 x 3" round-head bolts through the 2 corner holes that fit over the two 3/4" (19 mm) holes drilled in Step 2 of "Installation for One Wall Stud at Two Corner Holes" in the "Drill Holes in Rear Wall" section. 2. Start toggle nuts on the bolts from the back of the mounting plate. Leave enough space for the toggle nut to go through the wall and to open. 3. Position mounting plate on the wall, making sure that the top of the mounting plate is aligned with the front edge of the upper cabinet. 4. Push the 2 bolts with toggle nuts through the drywall, and finger tighten the bolts to make sure toggle nuts have opened against drywall. 5. Insert 2 lag screws into the remaining 2 corner holes. 6. If installing on a second wall stud, insert lag screw(s) into the other hole(s) drilled in Step 2 of "Installation for One Wall Stud at Two Corner Holes" in the "Drill Holes in Rear Wall" section. 7. Check alignment of mounting plate, making sure it is level. 8. Securely tighten all lag screws and bolts. Wall Studs at All Four Corner Holes (Figure 4} 1. Position mounting plate on the wall, making sure that the top of the mounting plate is aligned with the front edge of the upper cabinet. 2. Insert lag screws into the 4 corner holes. 3. Check alignment of mounting plate, making sure it is level. 4. Securely tighten all lag screws. 1. Disconnect power to outlet. 2. Remove all contents from upper cabinet. 3. Place Upper Cabinet Template against the bottom of the upper cabinet, and attach with tape or thumbtacks. Make sure the template centerline aligns with the vertical centerline on the rear wall. The "rear wall" arrows must be against the rear wall so that the holes cut into the upper cabinet align with the holes in the top of the microwave oven. NOTE: If the upper cabinet has a frame around it, trim the template edges so that it fits inside the frame, against the upper cabinet bottom. The template has trim lines to use as guides. 4. Make sure the 10" (25.4 cm) dimension from the rear wall to points "D" and "E" on the template is maintained. B A. 1/4-20 x 3" round-head bolt O O B. Mounting plate C. Drywall D. Spring toggle nut 5. Insert lag screw(s) into the holes drilled into wall stud(s) in Step 2 of "Installation for No Wall Studs at Corner Holes" in the "Drill Holes in Rear Wall" section. 6. Check alignment of mounting plate, making sure it is level. 7. Securely tighten all lag screws and bolts.