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SPEC
TIGHTENING TORQUE
TIGHTENING TORQUES
ENGINE TIGHTENING TORQUES
Use new
lock washer
2-17
Clutch push lever
Bolt
M8
1
12
1.2
8.9
Gearshift cam selector stopper
Bolt
M6
1
10
1.0
7.2
Clutch cable holder
Bolt
M6
1
10
1.0
7.2
Neutral switch
Sensor
M10
1
20
2.0
14
Crankcase oil drain screw
Plug
M12
1
20
2.0
14
Speed sensor
Bolt
M6
1
10
1.0
7.2
Oil pump
Bolt
M6
3
7.0
0.7
5.1
Drive chain guide
Bolt
M6
2
8.0
0.8
5.9
Secondary shaft bearing plate
Bolt
M6
1
10
1.0
7.2
Valve clearance adjuster
Nut
M6
2
14
1.4
10.3
Oil timing tube (cylinder side)
Bolt
M8
1
17
1.7
12.5
Drive shaft sprocket cover
Bolt
M6
2
10
1.0
7.2
One way starting gear
Bolt
M8
3
30
3.0
22
Stator assembly
Bolt
M6
3
10
1.0
7.2
Pulse coil holder
Bolt
M5
2
7.0
0.7
5.1
Stator assembly wire harness holder
Bolt
M5
1
7.0
0.7
5.1
Crankshaft (timing display)
Plug
M32
1
4.0
0.4
2.9
Magneto rotor (timing display)
Plug
M14
1
4.0
0.4
2.9
Oil hose to radiator
Bolt
M6
4
10
1.0
7.2
Radiator side brackets
Bolt
M6
2
7.0
0.7
5.1
Injection body clamp
Bolt
M4
1
2.0
0.2
1.4
Drive shaft mounting plate
Bolt
M6
2
10
1.0
7.2
Temperature
Sensor
M8
1
9.0
0.9
6.6
Injection body junction
Bolt
M6
2
10
1.0
7.2
Exhaust tube to cylinder head
Stud
M8
2
15
1.5
11
A.I. System tube
Bolt
M6
2
10
1.0
7.2
Spark plug
Bolt
M12
1
18
1.8
13.3
Springs / Clutch housing pressure plate
Bolt
M6
4
8.0
0.8
5.9
Primary clutch
Nut
M16
1
75
7.5
55
Balancer gear
Nut
M12
1
55
5.5
40.5
Oil flow screw
Bolt
M6
1
7.0
0.7
5.1
Cylinder (drive side)
L = 65mm
Bolt
M6
2
10
1.0
7.2
Transmission chain sprocket
Nut
M18
1
110
11.0
81
Right side cover
L = 55mm
Bolt
M6
1
10
1.0
7.2
L = 50mm
Bolt
M7
3
10
1.0
7.2
L = 35mm
Bolt
M8
1
10
1.0
7.2
L = 25mm
Bolt
M9
8
10
1.0
7.2
Use new
lock washer
Use new
lock washer
size N.m kgf.m ft.lb
Remarks
Tightening torque
Part to be tightened
Part name
Thread
Qty
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...