Yamaha 2009 YZF-R1 (Y) User Manual

ELECTRIC STARTING SYSTEM
8-9
EAS14B1036
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION
If the engine stop switch is set to “ ” and the main switch is set to “ON” (both switches are closed),
the starter motor can only operate if at least one of the following conditions is met:
• The transmission is in neutral (the gear position sensor is neutral position).
• The clutch lever is pulled to the handlebar (the clutch switch is closed) and the sidestand is up (the
sidestand switch is closed).
The starting circuit cut-off relay prevents the starter motor from operating when neither of these con-
ditions has been met. In this instance, the starting circuit cut-off relay is open so current cannot
reach the starter motor. When at least one of the above conditions has been met the starting circuit
cut-off relay is closed and the engine can be started by pressing the starter switch.

Yamaha 2009 YZF-R1 (Y) Specifications

General

Bore x Stroke	78.0 mm x 52.2 mm
Compression Ratio	12.7:1
Fuel System	Fuel injection with YCC-T and YCC-I
Ignition	TCI: Transistor Controlled Ignition
Transmission	6-speed w/multiplate slipper clutch
Final Drive	Chain
Front Tire	120/70-ZR17
Rear Tire	190/55-ZR17
Seat Height	835 mm
Wet Weight	206 kg
Engine Type	Liquid-cooled, 4-stroke, DOHC, inline 4-cylinder
Front Suspension	43 mm inverted fork, fully adjustable
Rear Suspension	Single shock, fully adjustable
Front Brakes	Dual 310 mm discs, radial-mount 6-piston calipers
Rear Brakes	220 mm disc, single-piston caliper
Dimensions (L x W x H)	2, 070 mm x 715 mm x 1, 130 mm
Wheelbase	1415 mm
Fuel Capacity	18 L