You will have either a gt15 or k03.
Ko3 is two nuts both 10mm iirc
Gt15 cas a circlip and a thumb screw to adjust. Either way fitting a mbc is best because then you can adjust easily from the top.
Ko3 is two nuts both 10mm iirc
Gt15 cas a circlip and a thumb screw to adjust. Either way fitting a mbc is best because then you can adjust easily from the top.