2003 YAMAHA WR 250F coolant

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Page 218 of 860

YAMAHA WR 250F 2003  Owners Manual 3 - 27
INSP
ADJ
12. Install:
Coolant reservoir cap
13. Start the engine and let it warm
up for several minutes.
14. Turn off the engine and inspect
the coolant level.
Refer to “COOLANT LEVEL
INSPEC

Page 220 of 860

YAMAHA WR 250F 2003  Owners Manual 3 - 29
INSP
ADJ
3. Inspect:
Pressure
Impossible to maintain the
specified pressure for 10 sec-
onds 
→ Replace.
COOLING SYSTEM INSPECTION
1. Inspect:
Coolant level
2. Attach:
Radiator cap tester

Page 240 of 860

YAMAHA WR 250F 2003  Owners Manual 3 - 49
INSP
ADJ
ENGINE IDLING SPEED 
ADJUSTMENT
1. Start the engine and thoroughly
warm it up.
2. Attach:
Inductive tachometer
To spark plug lead.
3. Adjust:
Engine idling speed
Adjustment steps:
A

Page 338 of 860

YAMAHA WR 250F 2003  Owners Manual 4 - 13
ENGRADIATOR
EC450001
RADIATOR
Extent of removal:
1 Radiator removal
Extent of removal Order Part name Q’ty Remarks
RADIATOR REMOVAL
Preparation for removal Drain the coolant. Refer to “COOL

Page 344 of 860

YAMAHA WR 250F 2003  Owners Manual 4 - 19
ENGRADIATOR
3. Install:
Right radiator 
1 
Bolt (right radiator) 
2 
Radiator hose 3 
3 
Refer to “CABLE ROUTING
DIAGRAM” section in the
CHAPTER 2.
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)

Page 460 of 860

YAMAHA WR 250F 2003  Owners Manual 4 - 135
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
OIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
Extent of removal:
1 Oil filter element removal
2 Water pump removal
3 Righ

Page 468 of 860

YAMAHA WR 250F 2003  Owners Manual 4 - 143
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
REMOVAL POINTS
Impeller shaft
1. Remove:
Impeller 
1 
Washer 
2 
Impeller shaft 
3 
NOTE:Hold the impeller shaft on its width
acr

Page 716 of 860

YAMAHA WR 250F 2003  Owners Manual 5 - 139
CHASREAR SHOCK ABSORBER
EC580000
REAR SHOCK ABSORBER
Extent of removal:
1 Rear shock absorber removal
2 Rear shock absorber disassembly
Extent of removal Order Part name Q’ty Remarks
REAR SH
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