Instructions for Generic Lima Ringfield Motor Upgrade Kit (LA4) Step-by-step instructions for our Generic Lima ringfield motor upgrade kits. Last revised: 4 May 2019 Share this:Tweet Click to share on Reddit (Opens in new window) Reddit Click to email a link to a friend (Opens in new window) Email More Click to share on WhatsApp (Opens in new window) WhatsApp Click to print (Opens in new window) Print