10wt oil, and amount depends on the exact model: K=450cc, L/M/N=390. Levels are: K model 90mm, L/M/N 122mm.
Quite a difference, so I hope you know which model they came from!
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
