This mercury carburetor synchronizer tuner (carb synch tuner or manometer) uses mercury to synchronize but DOES NOT come with mercury. It will synchronize up to 4 carburetors at a time.
It has a sheet steel body with clear markings incremented every 2cm from 2 to 54 for simple accurate tuning and includes, hose, line restricters, 5mm (for Honda, Kawasaki and Suzuki motorcycles) and 6mm (for Yamaha and many European motorcycles) adapters and easy to follow instructions for assembly. By Barracuda®.
Maintenance schedule: Honda recommends checking your carburetor idle speed every 4000 miles and your carburetor choke every 8000 miles. Synchronize your carburetors every 8000 miles or 12800 km.