2005 YAMAHA YZ250LC transmission

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Page 358 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-71
CRANKCASE AND CRANKSHAFTENG
8. Tighten:
9Segment 1
9Bolt (segment) 2
NOTE:
9When installing the segment onto the shift cam
3, align the punch mark awith the dowel pin
b.
9Turn the segment clockwi

Page 360 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-72
TRANSMISSION, SHIFT CAM AND SHIFT FORKENG
Extent of removal Order Part name Q’ty Remarks
TRANSMISSION, SHIFT CAM AND
SHIFT FORK REMOVAL
Preparation for  EngineRefer to “ENGINE REMOVAL” sect

Page 362 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-73
TRANSMISSION, SHIFT CAM AND SHIFT FORKENG
EC4H4600
Bearing
1. Inspect:
9Bearing 1
Rotate inner race with a finger.
Rough spot/Seizure 
Replace. 2. Inspect:
9O-ring 1
Damage 
Replace.
3. Check:

Page 363 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-73
BOITE A VITESSES, BARILLET DE SELECTEUR ET FOURCHETTE
GETRIEBE, SCHALTNOCKE UND SCHALTGABEL
TRASMISSIONE, CAMMA DEL CAMBIO E FORCELLA DEL CAMBIOENG
AUSBAUPUNKTE
Getribe
1. Ausbauen:
9Hauptwelle 1

Page 364 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-74
TRANSMISSION, SHIFT CAM AND SHIFT FORKENG
EC4H5000
ASSEMBLY AND INSTALLATION
EC4H5242
Transmission
1. Install:
95th pinion gear (21T) 1
93rd pinion gear (18T) 2
9Collar 3
94th pinion gear (22T) 4

Page 366 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-75
TRANSMISSION, SHIFT CAM AND SHIFT FORKENG
4. Install:
9Spacer 1
NOTE:
9Apply the lithium soap base grease on the oil
seal lip.
9When installing the spacer into the crankcase,
pay careful attentio

Page 368 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-76
TRANSMISSION, SHIFT CAM AND SHIFT FORKENG
5. Install:
9Shift fork 1 (L) 1
9Shift fork 2 (C10) 2
9Shift fork 3 (R) 3
9Shift cam 4
To main axle and drive axle.
NOTE:
9Apply the molybdenum disulfide

Page 369 of 596

YAMAHA YZ250LC 2005  Manuale duso (in Italian) 4-76
BOITE A VITESSES, BARILLET DE SELECTEUR ET FOURCHETTE
GETRIEBE, SCHALTNOCKE UND SCHALTGABEL
TRASMISSIONE, CAMMA DEL CAMBIO E FORCELLA DEL CAMBIOENG
5. Einbauen:
9Schaltgabel 1 (L) 1
9Schaltgabel