Slip 4x4 or 6x6 lumber attached to the Timber Jack into the square tubing of the purlin splicer and secure with nails through the holes provided.
Adjustment to Timber Jack can be made by turning "U" shaped handle at bottom of screw. Acme threads are greased for easy adjustment.
Attach base plate to a solid foundation through the 4 holes provided.
Caution. The acme screw of the Timber Jack will completely separate from the acme nut if screwed out too far. Do not extend the acme screw past the maximum adjustment of 5". This will insure that the threads of the acme nut will be used to support a heavy load. See other Ellis Screw Jacks