As lizzie say's or alternitavely remove one lug bolt from each rear wheel, jack up rear of car, turn wheel (each side) until lug hole lines up with star adjuster (use bright torch to see) and simply turn star adjuster with long flat head screw driver through the lug hole (each side) until it stops, check that the wheel won't turn (then you know you turned the adjuster the right way) if not, turn in other direction until wheel won't turn, then simply back off each star adjuster about 3 or 4 filcks of the screw driver until wheel is free moving & you should find your handbrake pulls firm on about 3 clicks. Of course, if you like it higher (5-6 clicks) then just give each star adjuster a few more flicks until your happy.. Saves any strip down & all you need is a Jack; axle stands or similar, 17mm wrench for lug bolts & screw driver. Takes about 15-20 minutes. Tried & tested with perfect results

It's what any honest mechanic would do! good luck with it. Be warned, most garages will remove the road wheels, remove calipers & strip the drums before making this adjustment, then charge you £50+ for doing the job

Second picture from bottom on the guide will help (except your going through the wheel too).
The adjuster is designed to be accessible through the wheel & disc for a good reason
