Registered Forum User
Ducati Meccanica
Posts: 2,467
Join Date: Dec 2001
Location: North Yorkshire
Mood: Is 112 dB loud enough?? What??
That's the carb heater tap, I believe. If it's pointing towards the heater line is on (winter position) otherwise it's off (summer position). Mind, you have to leave in "winter" position all year long in some places.