I used a .9 mm Hexagon wrench I had to purchase. It seemed work fine. .89 mm wrench would basically be a .9mm wrench
Help with SME 309 arm lift. Will not lower or rise.
Was trying to adjust the the height of the SME 309 arm lift; it was to high. I doing so I messed something up. The lift will not rise or lower now. I used a .9mm Allen wrench and inserted it into the proper hole and either through something serious off or damaged it. I can’t get it to rise and lower properly now. It actually rises a bit when it’s in the down position now.