1. Remove the plug from the end of the breather drain tube and allow it to drain into a suitable container (see illustration). Check the condition of the tube, making sure it has no cracks and splits. Replace the plug, making sure it is secure.
9.1. Remove the plug (arrowed) and allow any residue to drain
2. Drain the tube more regularly if the machine is regularly ridden at full throttle or In the rain, or at any time that an accumulation of deposits is noticed in the transparent tube.