2001 YAMAHA YZ125LC engine

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Page 70 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-3
SPECMAINTENANCE SPECIFICATIONS
Item Standard Limit
Cylinder head:
Combustion chamber capacity 10.2 cm
3…
(0.359 Imp oz, 0.345 US oz)
Warp limit…
0.03 mm (0.0012 in)
Cylinder:
Bore size 54.000~

Page 71 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-4
SPECMAINTENANCE SPECIFICATIONS
Item Standard Limit
Transmission:
Main axle deflection limit…
0.01 mm (0.0004 in)
Drive axle deflection limit…
0.01 mm (0.0004 in)
Shifter:
Shifting type Cam dru

Page 77 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-10
SPECMAINTENANCE SPECIFICATIONS
Part to be tightened Thread size QtyT ightening torqueNm m•kg ft•lb
Rear brake master cylinder and frame M  6 ´1.0 2 10 1.0 7.2
Rear brake reservoir tank and

Page 79 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-12
SPEC
GENERAL TORQUE SPECIFICATIONS/
DEFINITION OF UNITS
This chart specifies torque for standard faste-
ners with standard I.S.O. pitch threads. Torque
specifications for special components or as

Page 116 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-13
SPECCABLE ROUTING DIAGRAM
EC240000
1Brake hose
2Fuel tank breather hose
3Cable guide
4Clamp
5“ENGINE STOP” button lead
6Throttle cable
7Air vent hose (right)
8Air vent hose (left)
9Transmissi

Page 117 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-13
SPEC
SCHEMA DE CHEMINEMENT DES CABLES
KABELFÜHRUNGSÜBERSICHTPLAN
DIAGRAMMA DEL PASSAGGIO DEI CAVI
KABELFÜHRUNGSÜBER-
SICHTPLAN
1Bremsschlauch
2Kraftstofftank-Belüftungsschlauch
3Kabelführun

Page 118 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-14
SPECCABLE ROUTING DIAGRAM
1Brake hose holder
2Master cylinder
3Brake hose
4Hose guide
5CDI unit band
6CDI unit
7High tension cord
8Ignition coil
9Cable guide
0Radiator breather hose
qWireharness

Page 119 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 2-14
SPEC
SCHEMA DE CHEMINEMENT DES CABLES
KABELFÜHRUNGSÜBERSICHTPLAN
DIAGRAMMA DEL PASSAGGIO DEI CAVI
1Bremsschlauchhalter
2Hauptbremszylinder
3Bremsschlauch
4Schlauchführung
5Band der CDI-Einheit