The adjusters are knurled wheels on top of the struts and are adjusted by hand.How do you alter the Teins firmness? Can't seem to find any videos on YouTube... And do they do them in any other colour than that horrible green?
The fronts are easy to access by removing the plastic cover under the bonnet and you can see the strut top. The rears are a bit more fiddly and need the car jacking up to give more space, then three clips are removed from the wheel arch liner so that you can get your hand in and fingers onto the adjuster on top.
Fronts - 5 minutes max.
Rears - 15 minutes per side max.