Yamaha 2009 YZF-R1 (Y) User Manual

ELECTRICAL COMPONENTS
8-135
EAS28170
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Rectifier/regulator input voltage
Out of specification → Correct the stator
coil condition.
Refer to “CHECKING THE STATOR
COIL” on page 8-134.
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a. Set the engine tachometer to the ignition
coil of cylinder #1.
b. Connect the pocket tester (AC 20 V) to the
rectifier/regulator coupler as shown.
c. Start the engine and let it run at approxi-
mately 5000 r/min.
d. Measure the rectifier/regulator input volt-
age.
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2. Check:
• Rectifier/regulator output voltage
Out of specification → Replace the recti-
fier/regulator.
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a. Set the engine tachometer to the ignition
coil of cylinder #1.
b. Connect the pocket tester (DC 20 V) to the
rectifier/regulator coupler as shown.
c. Start the engine and let it run at approxi-
mately 5000 r/min.
d. Measure the rectifier/regulator output volt-
age.
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EAS28180
CHECKING THE HORN
1. Check:
• Horn resistance
Out of specification → Replace.
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a. Disconnect the horn leads from the horn
terminals.
Rectifier/regulator input voltage
above 14 V at 5000 r/min
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
White “1”
• Negative tester probe
White “2”
• Positive tester probe
White “1”
• Negative tester probe
White “3”
• Positive tester probe
White “2”
• Negative tester probe
White “3”
Rectifier/regulator output volt-
age
14.2–14.8 V
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
Red “1”
• Negative tester probe
Black “2”
Coil resistance
1.07–1.11 Ω at 20 °C (68 °F)

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