2005 YAMAHA WR 250F engine

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Page 524 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 199
ENGAC MAGNETO AND STARTER CLUTCH
2. Install:
Holder 
1 
Bolt 
2 
CAUTION:
Pass the pickup coil lead and
charging coil lead under the
holder while taking care not to
allow these leads to get

Page 528 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 203
ENGAC MAGNETO AND STARTER CLUTCH
9. Install:
Washer (rotor)
Nut (rotor) 
1 
Use the sheave holder 
2.
NOTE:Tighten the rotor nut to 65 Nm
(6.5 mkg, 47 ftlb), loosen and
retighten the rotor

Page 530 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 205
ENGAC MAGNETO AND STARTER CLUTCH
13. Install:
Engine guard 
1 
Clamp 
2 
Washer 
3 
Bolt [engine guard (front)] 
4 
Bolt [engine guard (rear)] 
5 
Cylinder head breather hose
6 
T R..23

Page 532 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 207
ENGENGINE REMOVAL
EC4M0000
ENGINE REMOVAL
Extent of removal Order Part name Q’ty Remarks
ENGINE REMOVAL
Preparation for removal Hold the machine by placing the suitable 
stand under the fram

Page 536 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 211
ENGENGINE REMOVAL
Extent of removal:
1 Engine removal
Extent of removal Order Part name Q’ty Remarks
Ignition coil
Disconnect the AC magneto lead.
Starter motor lead Disconnect at the starte

Page 540 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 215
ENGENGINE REMOVAL
EC4M3000REMOVAL POINTSEC4F3100Drive sprocket
1. Remove:
Nut (drive sprocket) 
1 
Lock washer 
2 
NOTE:Straighten the lock washer tab.
Loosen the nut while applying the
re

Page 542 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 217
ENGENGINE REMOVAL
EC4M5000ASSEMBLY AND INSTALLATION
Engine installation
1. Install:
Engine 
1 
Install the engine from right
side.
Pivot shaft 
2 
Engine mounting bolt 
(lower) 
3 
Lower e

Page 544 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 219
ENGENGINE REMOVAL
2. Install:
Lock washer 
1 
Nut (drive sprocket) 
2 
NOTE:Tighten the nut while applying the
rear brake.
T R..75 Nm (7.5 m · kg, 54 ft · lb)
New
3. Bend the lock washer t