Yamaha XT660R S Service Manual

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ELEC
CHAPTER 8
ELECTRICAL SYSTEM
ELECTRICAL COMPONENTS
........................................................................8-1
CHECKING SWITCH CONTINUITY
................................................................8-3
CHECKING THE SWITCHES
..........................................................................8-5
CHECKING THE BULBS AND BULB SOCKETS
..........................................8-7
TYPES OF BULBS ....................................................................................8-7
CHECKING THE CONDITION OF THE BULBS .......................................8-8
CHECKING THE CONDITION OF THE BULB SOCKETS .......................8-9
CHECKING THE LEDs..............................................................................8-9
IGNITION SYSTEM
.......................................................................................8-12
CIRCUIT DIAGRAM ................................................................................8-12
TROUBLESHOOTING ............................................................................8-13
ELECTRIC STARTING SYSTEM
..................................................................8-17
CIRCUIT DIAGRAM ................................................................................8-17
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION ........................8-18
TROUBLESHOOTING ............................................................................8-19
STARTER MOTOR
........................................................................................8-23
CHECKING THE STARTER MOTOR .....................................................8-25
ASSEMBLING THE STARTER MOTOR.................................................8-27
CHARGING SYSTEM
....................................................................................8-28
CIRCUIT DIAGRAM ................................................................................8-28
TROUBLESHOOTING ............................................................................8-29
LIGHTING SYSTEM
......................................................................................8-31
CIRCUIT DIAGRAM ................................................................................8-31
TROUBLESHOOTING ............................................................................8-32
CHECKING THE LIGHTING SYSTEM....................................................8-34
SIGNALING SYSTEM
...................................................................................8-37
CIRCUIT DIAGRAM ...............................................................................8-37
TROUBLESHOOTING ............................................................................8-39
CHECKING THE SIGNALING SYSTEM .................................................8-40
COOLING SYSTEM
.......................................................................................8-49
CIRCUIT DIAGRAM ................................................................................8-49
TROUBLESHOOTING ............................................................................8-50

Yamaha XT660R S Specifications

General

Displacement	660 cc
Bore x Stroke	100.0 mm x 84.0 mm
Compression Ratio	10.0:1
Fuel System	Fuel Injection
Ignition System	TCI
Starter System	Electric
Transmission System	5-speed
Final Drive	Chain
Front Suspension System	Telescopic forks
Front Tyre	90/90-21 M/C 54S
Rear Tyre	130/80-17 M/C 65S
Overall Width	865 mm
Overall Height	1, 230 mm
Seat Height	865 mm
Wheelbase	1, 505 mm
Wet Weight	181 kg
Fuel Tank Capacity	15 litres
Oil Tank Capacity	2.9 litres
Engine Type	Liquid-cooled, 4-stroke, single cylinder, SOHC
Maximum Power	48hp (35kW) @ 6, 000rpm
Frame	Steel diamond
Rear Suspension System	Swingarm, (link suspension)
Front Brake	Single 298mm disc, 2-piston caliper
Rear Brake	Single Disc, 245 mm