remove consol and drill out pop rivets of rubber gaiter ,the remove smaller gaiter on lever /lubricate and work ,if it needs adjusting lingage going down the side of box needs removing and eyebolt screwing in /out to get it to go in and out of diff lock ,watch you dont loose plastic bushes out of eyebolt,difflock selector in box is sprung loaded so lever needs to go further than amount needed to select ,jack one front wheel up to check its working