Tightening Torques - Yamaha YZ250F(Y) Owner's Service Manual

Item
Clutch lever free play (lever end)
Throttle grip free play
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.
Part to be tightened
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
Item
TIGHTENING TORQUES
Standard
7–12 mm (0.28–0.47 in)
3–5 mm (0.12–0.20 in)
Standard
Electrical
5XC-10/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)
5XC-R0/YAMAHA (For USA and CDN)
5XC-S0/YAMAHA (Except for USA and
CDN)
5UL-10/DENSO
6 mm (0.24 in)
0.08–0.10 Ωat 20 °C (68 °F)
4.6–6.8 kΩat 20 °C (68 °F)
Thread size
M10S × 1.0
M6 × 1.0
M12 × 1.0
M6 × 1.0
M8 × 1.25
M9 × 1.25
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M14 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
M8 × 1.25
M6 × 1.0
M6 × 1.0
M6 × 1.0
M6 × 1.0
2-10
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Tightening torque
Q'ty
Nm m•kg
1 13 1.3
10 10 1.0
1 28 2.8
2 7 0.7
1 15 1.5
4 38 3.8
2 10 1.0
2 10 1.0
1 10 1.0
2 10 1.0
1 50 5.0
2 10 1.0
2 10 1.0
1 7 0.7
1 14 1.4
10 2 0.2
1 10 1.0
4 10 1.0
6 10 1.0
Limit
Limit
ft•lb
9.4
7.2
20
5.1
11
27
7.2
7.2
7.2
7.2
36
7.2
7.2
5.1
10
1.4
7.2
7.2
7.2