It has been nine or ten years since I did the locking ring on my 206. Was lying in bed yesterday and remembered why the locking ring is such a bugger to take off and put back on.
The tank is plastic and over the years, it warps out of shape due to age and the weight of petrol. Thus the hole it the top is no longer round....though you can't see it. If you measured it, it would be an odd kind of oval. Perhaps even splayed downwards at each end ?
Anyway, it is a bugger to screw back on until the matching marks line up. As I recall, at least one (if not both) is a small arrow or triangle.
The tank is plastic and over the years, it warps out of shape due to age and the weight of petrol. Thus the hole it the top is no longer round....though you can't see it. If you measured it, it would be an odd kind of oval. Perhaps even splayed downwards at each end ?
Anyway, it is a bugger to screw back on until the matching marks line up. As I recall, at least one (if not both) is a small arrow or triangle.