I have a venerable Sealey PC1450 pressure washer and it's been great for around 20 years or so. Recently it started to get a bit iffy with the on/off switch, so today I discovered the switch had become very graunchy and squirted some silicone oil in it. It now works very smoothly, switches on but won't latch. I looked into the possibilty of buying a new switch but was put off by these robbing bastards url:
There's a lesson for greedy parts stockists in the UK - go and get stuffed, matey.