oldoutboardjim Posted May 21, 2011 Share Posted May 21, 2011 I attempted to adjust the vertical adjustment on my 1992 LS400 by turning the appropriate Phillips-head screw. Unfortunately, there is a physics-related mystery that I cannot understand. Here goes: When you turn the vertical adjusting screw, the gearbox turns the horizontally-mounted adjustment screw. When this horizontally-mounted adjustment screw turns, it pushes the bottom of the headlight to change the vertical alignment. Okay, all good so far. But the bottom screw has a tab on the head that prevents it from turning! How can you adjust the headlight if this screw is not designed to turn????? Quote Link to comment Share on other sites More sharing options...
oldoutboardjim Posted May 21, 2011 Author Share Posted May 21, 2011 I found the answer. It appears that there is a gear that is mounted onto (screwed onto) the horizontally-mounted adjustment screw (horizontal adjustment gearbow shown): This gear was basically seized. A little cleanup and some plastic-friendly grease made everything good again. Quote Link to comment Share on other sites More sharing options...
steve2006 Posted May 22, 2011 Share Posted May 22, 2011 Thank you for posting this information and the picture,I give mine an occasional turn one way then the other then back to where they were along with a squirt of lubricant to keep them free to move. Quote Link to comment Share on other sites More sharing options...
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