Yamaha YZF-R1 2007 Service Manual

FEATURES1-5Aims and advantages of using YCC-I system• Improvement of the engine power characteristicsThe high power design in all ranges is now provided by having both two features of the shortintake function to ensure the power at the high speed revolution of engine, and the long intakefunction to ensure the power in the practical use range.• Intake pipe length switching control using the motorThe intake pipe length switching operation in a minute time is now available by means of the motordrive using the electronic control.The smooth power characteristic is provided, which does not letan operator feel the switching action by the optimization of its switching revolution number and themost suitable application of engine at the time of changing the revolution.A. Down position (long intake)(Low rpm to Mid rpm)B. Up position (short intake)(High rpm)Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk