Yamaha XT660X Service Manual

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ELEC
ELECTRIC STARTING SYSTEM
EAS00756
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 neutral
switch is closed).
• The clutch lever is pulled to the handlebar
(the clutch switch is closed) and the side-
stand is up (the sidestand switch is closed).
The starting circuit cut-off relay prevents the
starter motor from operating when neither of
these conditions 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 condi-
tions has been met the starting circuit cut-off
relay is closed and the engine can be started
by pushing the start switch.
WHEN THE TRANSMISSION IS
IN NEUTRAL
WHEN THE SIDESTAND IS UP
AND THE CLUTCH LEVER IS
PULLED TO THE HANDLEBAR
1
Battery
2
Main fuse
3
Main switch
4
Ignition fuse
5
Engine stop switch
6
Relay unit (starting circuit cut-off relay)
7
Relay unit (diode)
8
Clutch switch
9
Sidestand switch
0
Neutral switch
A
Start switch
B
Starter relay
C
Starter motor
M
3
C
B
1
2
4
5
6
7
A
8
9
0

Yamaha XT660X Specifications

General

Displacement	660cc
Bore x Stroke	100.0 mm x 84.0 mm
Compression Ratio	10.0:1
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	5-speed
Final Drive	Chain
Rear Brake	Single disc, Ø 245 mm
Front Tyre	120/70 R17
Rear Tyre	160/60 R17
Maximum Power	48 HP (35.3 kW) @ 6, 000 rpm
Maximum Torque	58.4Nm (43.1lb-ft) @ 5, 250rpm
Front Suspension	Telescopic fork
Rear Suspension	Swingarm, (link suspension)
Fuel Tank Capacity	15 litres
Engine Type	Liquid-cooled, 4-stroke, single cylinder, SOHC, 4-valves