Karcher lance - hard to fit the attachments

workingboy

The image is of a K series karcher lance where various attachments are fitted.
Increasingly they are hard to fit and twist and tends to leave the yellow bit behind from the attachment then having to use long nose pliers to get it out.
Tried the attachments on another K series lance with no issues.
Can the male bit in the centre of the image be removed to emery etc its size to help when attaching the attachments.
thanks

shiraz99

Try changing the O-ring on the attachment and lubricating the spring with some silicone grease.

workingboy

Thanks, 
Tried using silcone grease, no effect.
When the yellow bit is left behind, the ‘O’ ring is still in place in the attachment.

bengalknights

This is quite a common issue on the yellow versions of karchers, usually you can either replace the whole pipe or if under warranty they will repair it.