Sprocket cover off, screw driver and pliers to bend metal tab and remove cable from the cover, adjuster at handlebars screwed all the way in (but gaps in adjusters together.
Cable tie or tape the new cable onto the old one and use the old cable to gently pull the new one through the correct routing, attach cable to the clutch lever first then attach other end to sprocket cover side possibly gently using pliers as these bits spring loaded, bend the metal tab back with screw driver, re attach sprocket cover