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Hints and Tips

Topper Mast Cup Assembly

By Dave Cockerill 22nd February 2022

To remove an old cup: Remove the mast gate for easier access. Remove the nut and washer from the top of the cup. Remove the cup. Few come off easily. The last one I did came off easily after I power washed around it. I imagined I'd broken any suction and cleared any build up of grit. In the past we have gripped the lip with a pair of long nose pliers and ‘unscrewed’ them. The easiest way is to drill out the ‘core’ of the cup with a 22mm hole saw. This will expose the second nut below the...