Yamaha YZ250(W)/W1, Owner'S Service Manual

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GENERAL TORQUE SPECIFICATIONS/
DEFINITION OF UNITS
SPEC
This chart specifies torque for standard faste-
ners with standard I.S.O. pitch threads. Torque
specifications for special components or assem-
blies are included in the applicable sections of
this book. To avoid warpage, tighten multi-faste-
ner assemblies in a crisscross fashion, in pro-
gressive stages, until full torque is reached.
Unless otherwise specified, torque specifications
call for clean, dry threads. Components should
be at room temperature.
A: Distance across flats
B: Outside thread diameter
EC230000
DEFINITION OF UNITS
EC220001
GENERAL TORQUE SPECIFICATIONS
A B
TORQUE SPECIFICATION
(Nut) (Bolt)
Nm m•kg ft•lb
10 mm 6 mm 6 0.6 4.3
12 mm 8 mm 15 1.5 11
14 mm 10 mm 30 3.0 22
17 mm 12 mm 55 5.5 40
19 mm 14 mm 85 8.5 61
22 mm 16 mm 130 13 94
Unit Read Definition Measure
mm milimeter 10- 3 meter Length
cm centimeter 10- 2 meter Length
kg kilogram 10 3 gram Weight
N Newton 1 kg
×
m/sec 2 Force
Nm Newton meter N
×
m Torque
m•kg Meter kilogrma m
×
kg Torque
Pa Pascal N/m 2 Pressure
N/mm Newton per millimeter N/mm Spring rate
L Liter — Volume or capacity
cm 3 Cubic centimeter — Volume or capacity
r/min Revolution per minute — Engine speed
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