Tightening Torques; Electrical - Yamaha YZ250F(D) Owner's Service Manual

ELECTRICAL

Ignition system:
Advancer type
CDI:
Magneto-model (stator)/manufacturer
Charging coil 1 resistance (color)
Charging coil 2 resistance (color)
Pickup coil resistance (color)
CDI unit-model/manufacturer
Ignition coil:
Model/manufacturer
Minimum spark gap
Primary coil resistance
Secondary coil resistance

TIGHTENING TORQUES

ENGINE
△ - marked portion shall be checked for torque tightening after break-in or before each race.
Item
Spark plug
Camshaft cap
Cylinder head blind plug screw
Cylinder head (stud bolt)
Cylinder head (stud bolt)
Cylinder head (bolt)
Cylinder head (nut)
Cylinder head cover
Cylinder
Balancer weight
Balancer shaft driven gear
Timing chain guide (intake side)
Timing chain tensioner
Timing chain tensioner cap bolt
Impeller
Radiator hose clamp
Coolant drain bolt
Water pump housing
Radiator
Radiator pipe
Oil pump cover
Oil pump
Oil filter element drain bolt
Item
Thread
size
M10S
M6
M12
M6
M8
M9
M6
M6
M6
M6
M14
M6
M6
M6
M8
M6
M6
M6
M6
M6
M4
M6
M6
TIGHTENING TORQUES
Standard
Electrical
17D-51/YAMAHA
720–1,080 Ωat 20 °C (68 °F) (Green–
Brown)
44–66 Ωat 20 °C (68 °F) (Black–Pink)
248–372 Ωat 20 °C (68 °F) (White–Red)
17D-90/YAMAHA
5UL-20/DENSO
6 mm (0.24 in)
0.08–0.10 Ωat 20 °C (68 °F)
4.56–6.84 kΩat 20 °C (68 °F)
Q'ty Tightening torque
1 13 Nm (1.3 m•kg, 9.4 ft•lb)
10 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 28 Nm (2.8 m•kg, 20 ft•lb)
2 7 Nm (0.7 m•kg, 5.1 ft•lb)
1 15 Nm (1.5 m•kg, 11 ft•lb)
4 38 Nm (3.8 m•kg, 27 ft•lb)
2 10 Nm (1.0 m•kg, 7.2 ft•lb)
2 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 10 Nm (1.0 m•kg, 7.2 ft•lb)
2 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 50 Nm (5.0 m•kg, 36 ft•lb)
2 10 Nm (1.0 m•kg, 7.2 ft•lb)
2 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 7 Nm (0.7 m•kg, 5.1 ft•lb)
1 14 Nm (1.4 m•kg, 10 ft•lb)
10 2 Nm (0.2 m•kg, 1.4 ft•lb)
1 10 Nm (1.0 m•kg, 7.2 ft•lb)
4 10 Nm (1.0 m•kg, 7.2 ft•lb)
6 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 1.7 Nm (0.17 m•kg, 1.2 ft•lb)
3 10 Nm (1.0 m•kg, 7.2 ft•lb)
1 10 Nm (1.0 m•kg, 7.2 ft•lb)
2-10
Limit
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Remarks
Lock washer
Copper
washer