Installation Guide

D4-9 / D4-9X Four-Post Lifts 18 P/N 5900251 — Rev. A— October 2020
Creating Chalk Line Guides
Create the Chalk Line Guides so that the outside edges of all four Post bases fit into the four corners
when it is time to put the Posts into place.
Note: Do
not use the Total Length value; this includes the Ramps, which are not taken into
consideration for creating Chalk Line Guides.
To create Chalk Line Guides:
1. Use the Total Width and Outside Posts Length values for your model, which you can find in
Specifications.
2. Create the Front Chalk Line where you want the Front of the Lift.
3. Create the Left and Right Chalk Lines at 90° angles to the Front Chalk Line and parallel to each
other; the Left and Right Chalk Lines
must be parallel to each other.
4. Create the Rear Chalk Line parallel to the Front Chalk Line; the Front and Rear Chalk Lines
must
also be parallel to each other.
5. With all four Chalk Lines created and before moving the Posts into position, measure
diagonally
to make sure the two diagonal measurements are the same.
6. When you move the Posts into position, put the outside edges of the bases inside the four corners
created by the Chalk Line Guides.