Yamaha XT660X Service Manual

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ENG
BALANCER DRIVEN GEAR
INSTALLING THE BALANCER DRIVEN
GEAR AND BALANCER DRIVE GEAR
1. Install:
• washer
• balancer drive gear 1
• straight key 2
• balancer driven gear 3
• straight key
• primary drive gear
• water pump drive gear
NOTE:
• Align the punch mark a on the balancer
drive gear with the punch mark b on the bal-
ancer driven gear.
• Install the key with its blunt surface facing c
the crankshaft.
1
3
2
a
b
2
c
2. Install:
• lock washer 1
• primary drive gear nut 2
• lock washer 3
• balancer driven gear nut 4
NOTE:
Place an aluminum plate a between the teeth
of the balancer drive gear and balancer driven
gear.
3. Bend the lock washer tab.
2
1
a
4
a
3
New
T
R
.
.
80 Nm (8.0 m · kg, 58 ft · lb)
New
T
R
.
.
70 Nm (7.0 m · kg, 50 ft · lb)

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