2001 YAMAHA YZ125LC engine

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Page 152 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-12
INSP
ADJ
TRANSMISSION OIL LEVEL CHECK
3. Inspect:
9Air filter element
Damage ÕReplace.
4. Apply:
9Foam-air-filter oil or engine mixing oil
To the element.
NOTE:
Squeeze out the excess oil. Eleme

Page 154 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-13
INSP
ADJ
TRANSMISSION OIL REPLACEMENT
3. Check:
9Transmission oil level
EC35K002
TRANSMISSION OIL REPLACEMENT
1. Start the engine and warm it up for several
minutes and wait for five minute.
2. P

Page 158 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-15
INSP
ADJIDLE SPEED ADJUSTMENT/MUFFLER INSPECTION/
SILENCER FIBER REPLACEMENT
EC35M010
IDLE SPEED ADJUSTMENT
1. Start the engine and thoroughly warm it up.
2. Adjust:
9Idle speed
EC35P010
MUFFLER

Page 178 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-25
DRIVE CHAIN SLACK ADJUSTMENT
INSP
ADJ
EC36A060
DRIVE CHAIN SLACK ADJUSTMENT
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Check:
9Drive chain slack a
Above the se

Page 180 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-26
FRONT FORK INSPECTION
INSP
ADJ
3. Adjust:
9Drive chain slack
EC36C000
FRONT FORK INSPECTION
1. Inspect:
9Front fork smooth action
Operate the front brake and stroke the
front fork.
Unsmooth actio

Page 188 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-30
REAR SHOCK ABSORBER SPRING PRELOAD
ADJUSTMENTINSP
ADJ
EC36M013
REAR SHOCK ABSORBER SPRING
PRELOAD ADJUSTMENT
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Remove:

Page 198 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-35
STEERING HEAD INSPECTION AND ADJUSTMENT
INSP
ADJ
2. Inspect:
9Bearing free play
Exist play ÕReplace.
EC36U013
STEERING HEAD INSPECTION AND
ADJUSTMENT
1. Elevate the front wheel by placing a suit

Page 204 of 558

YAMAHA YZ125LC 2001  Manuale duso (in Italian) 3-38
ELECTRICAL/SPARK PLUG INSPECTION
INSP
ADJ
EC370000
ELECTRICAL
EC371001
SPARK PLUG INSPECTION
1. Remove:
9Spark plug
2. Inspect:
9Electrode 1
Wear/Damage ÕReplace.
9Insulator color 2
Normal condi