Tightening Torques; General Torque Specifications; Engine; Electrical - Yamaha KT100SEC Owner's Service Manual

TIGHTENING TORQUES

ENGINE

Part to be tightened
Cylinder head
Spark plug
Crankcase
Crankcase cover1
Crankcase cover2
Stay1 mounting bolt
Gear3 mounting bolt
Rotor mounting nut
Cylinder
Manifold mounting bolt
Carburetor mounting
Drive sprocket mounting
Clutch stud bolt
M8 stopper dowel

ELECTRICAL

Part to be tightened
Starter motor mounting bolt

GENERAL TORQUE SPECIFICATIONS

This chart specifies torque for standard fasteners with
standard I.S.O. pitch threads. Torque specifications for
special components or assemblies are included in the
applicable sections of this book. To avoid warpage,
tighten multi-fastener assemblies in a crisscross fashion,
in progressive stages, until full torque is reached. Unless
otherwise specified, torque specifications call for clean,
dry threads. Components should be at room temperature.
Distance
across flats
TIGHTENING TORQUES
Thread size
Thread
Pitch
diameter
M8 1.25
M14 1.25
M6 1.0
M6 1.0
M5 0.8
M6 1.0
M5 0.8
M12 1.0
M8 1.25
M6 1.0
M6 1.0
M12 1.0
M12 1.0
M8 1.25
Thread size
Thread
Pitch
diameter
M6 1.0
Outside thread
diameter
Pitch
Tightening
Q'ty
N・m（kg・m）
6 18∼23 （1.8∼2.3）
1 15∼25 （1.5∼2.5）
8 10∼16 （1.0∼1.6）
4 10∼16 （1.0∼1.6）
5 6∼9 （0.6∼0.9）
2 10∼16 （1.0∼1.6）
4 6∼9 （0.6∼0.9）
1 30∼40 （3.0∼4.0）
4 18∼23 （1.8∼2.3）
2 10∼16 （1.0∼1.6）
2 7.5∼12 （0.75∼1.2）
1 ―
1 2.5
1
2.0
Tightening
Q'ty
N・m（kg・m）
2 10∼16（1.0∼1.6）
Thread size
M 5 （ 8 mm）
M 6 （ 10mm） × P1 .0
M 8 （ 13mm）
M10 （ 14mm）
M12 （ 17mm） × P1 . 5
2-3
SPEC
Remarks
YAMAHA Bond No. 1215
Remarks
Tightening
0 . 4kg・m
×
P0 . 8
0 . 6kg・m
1 . 5kg・m
× P1 . 25
3 . 0kg・m
× P1 . 5
5 . 5kg・m