Yamaha XT660X Service Manual

5 - 8
ENG
CYLINDER HEAD
EAS00221
CYLINDER HEAD
T
R
.
.
50 Nm (5.0 m
•
kg, 36 ft
•
Ib)
T
R
.
.
13 Nm (1.3 m
•
kg, 9.4 ft
•
Ib)
T
R
.
.
10 Nm (1.0 m
•
kg, 7.2 ft
•
Ib)
T
R
.
.
10 Nm (1.0 m
•
kg, 7.2 ft
•
Ib)
T
R
.
.
10 Nm (1.0 m
•
kg, 7.2 ft
•
Ib)
T
R
.
.
20 Nm (2.0 m
•
kg, 14 ft
•
Ib)
T
R
.
.
20 Nm (2.0 m
•
kg, 14 ft
•
Ib)
T
R
.
.
20 Nm (2.0 m
•
kg, 14 ft
•
Ib)
T
R
.
.
10 Nm (1.0 m
•
kg, 7.2 ft
•
Ib)
T
R
.
.
45 Nm (4.5 m
•
kg, 32 ft
•
Ib)
New
New
New
LS
New
New
New
New
LS
New
New
LS
New
New
E
1
2
5
4
6
8
7
9
10
11
3
3
(4)
3
12
(4)
3
E
E
Order Job/Part Q’ty Remarks
Removing the cylinder head
Remove the parts in the order listed.
Engine Refer to “ENGINE REMOVAL”.
Timing mark accessing screw/crank-
shaft end accessing screw
Refer to “ADJUSTING THE VALVE
CLEARANCE” in chapter 3.
1 Spark plug 1
2 Camshaft sprocket cover/O-ring 1/1
3 Tappet cover/O-ring 2/2
4 Air cut-off valve outlet pipe 1
5Gasket 1
6 Oil delivery pipe 1 1
7 Timing chain tensioner cap bolt 1
Refer to “REMOVING THE CYLINDER
HEAD” and “INSTALLING THE CYLIN-
DER HEAD”.
8 Timing chain tensioner/gasket 1/1
9 Camshaft sprocket 1
10 Cylinder head 1

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