F28693WRH - LG Washing Machine Service Manual (repair manual). Page 11

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11
Check the horizontality with a level (Gage).
8
Step 1
If washing machine legs are loose or not fully attached, then tighten with  the spanner wrench. 
Using the level, level the washing machine from front to back and side to side.
Step 2
Use the spanner wrench to adjust legs until level and try the Diagonal test.
Step 3
Perform a Rinse and Spin with some clothing in the machine.
To do this, put 2~3kg of clothing in the unit, turn on the unit, select the Rinse+Spin 
and then start. When the unit reaches the spin cycle, check vibrations.
If the unit vibrates, adjust the leveling foot slightly until the vibration subside. (Repeat step 2) 
Step 4
Tighten the lock nut up to lock the positioned leg.
Lower the foot until there is no gap between floor and foot.
And only use adjustment rubber when the gap  is more than 10mm.
Place your right hand on the back, right corner and your left hand on the front,
left corner of the unit, then attempt to rock the unit from corner to corner.
Then, move your right hand to the front, right corner and your left hand to the
back, left corner and attempt to rock the unit from corner to corner.
If the unit is level, it will not rock.  However, if the unit is not level, it will rock.
If the unit rocks, it will be necessary to adjust the leveling feet of the unit.
Adjust the foot on the front right corner. 
How to perform a diagonal test:
A level
Lower
Tighten
Adjustable feet
Diagonal test
Loosen
Adjustable feet
Higher
Tighten
Adjustable feet
Lower
4620ER4002B
(Gray)
for Wooden floors
Rubber Cup
4620ER4002A
(Black)
for Tile floors
Lock nut
10mm
Adjustable bolt
Tighen the lock nut
Floor
No Gap
Floor
No Gap
Floor
Gap
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