BigFoot Tongue Jack InstallationBigFoot Tongue Jack Installation Installation Instructions 2. Unpackage the BigFoot unit from it's box. 3. If your A-frame is equipped with a lower support plate under the mounting plate, you must install the nylon bushing supplied with the kit. Fit the bushing through the hole from the top and secure with locking clip underneath support. 4. Insert the BigFoot jack through the mounting hole (see diagram below) |