Vehicle Identification Number (VIN)
The abbreviation VIN is short for Vehicle Identification Number. All motorcycles and ATVs are given a unique VIN when they are manufactured. VINs are used to track ownership and record insurance claims and service procedures.
Motorcycles manufactured from 1980 to present have 17 digit VINs on US models. Bikes manufactured prior to 1980 will have shorter [...]
Vacuum
Pressure which is less than atmospheric pressure. In terms of a motorcycle engine it is the difference in air pressure between the engine’s intake manifold and Earth’s atmosphere. As the piston travels downwards on its stroke it creates a low pressure void that will be filled by the incoming air/fuel mixture. CV type carburetors also [...]
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