At that sort of mileage, one might expect clutch slip rather than drag. So, I go along with John V6, and suggest you change the clutch fluid whether it needs it or not, make sure any air is bled out, and check linkages for slop. If it doesn’t help, you have only lost a fiver or so for the fluid.
Others might be able to shed some light especially if you quote the model year and engine capacity.


Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900