Pre-adjusted carb before shipping, No extra adjustment needed.Just bolt on and good to go.
Measurements(see photos): Engine Side Opening:22.8mm Air Filter Side Opening: see photos. Mounting Bolt Spacing(Center to center): 52.7mm (2.07") Mounting Holes Size: 6.7mm/6.7mm/8mm/8.8mm
Package Included: 1 x Carburetor
Please Note: Measurements are only for your reference to confirm the compatibility,please allow 0.5-1mm error due to manual measurement.All detail measurements are marked on photos, please check and compare with stock/old parts before purchasing.