coolant YAMAHA WR 250F 2005 User Guide

YAMAHA WR 250F 2005 User Guide WR 250F 2005 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52335/w960_52335-0.png YAMAHA WR 250F 2005 User Guide

Page 193 of 864

YAMAHA WR 250F 2005 User Guide 3 - 2
INSP
ADJ
MAINTENANCE INTERVALS
ROTOR NUT
Retighten
EXHAUST PIPE, SILENCER, 
PROTECTOR
Inspect and retighten
Clean
Replace* Whichever comes first
*SPARK ARRESTER
Clean
(Every 
six 
months)
CRANK

Page 207 of 864

YAMAHA WR 250F 2005 User Guide 3 - 16
INSP
ADJ
PRE-OPERATION INSPECTION AND MAINTENANCE
EC320000
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good op

Page 212 of 864

YAMAHA WR 250F 2005 User Guide 3 - 21
INSP
ADJ
EC350000
ENGINE
COOLANT LEVEL INSPECTION
WARNING
Do not remove the radiator cap 1,
drain bolt and hoses when the
engine and radiator are hot. Scald-
ing hot fluid and steam may be
blow

Page 214 of 864

YAMAHA WR 250F 2005 User Guide 3 - 23
INSP
ADJ
COOLANT REPLACEMENT
WARNING
Do not remove the radiator cap
when the engine is hot.
CAUTION:
Take care so that coolant does not
splash on painted surfaces. If it
splashes, wash it away

Page 216 of 864

YAMAHA WR 250F 2005 User Guide 3 - 25
INSP
ADJ
9. Fill:
Radiator
Engine
To specified level.
CAUTION:
Do not mix more than one type
of ethylene glycol antifreeze
containing corrosion inhibitors
for aluminum engine.
Do not use wa

Page 218 of 864

YAMAHA WR 250F 2005 User Guide 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 864

YAMAHA WR 250F 2005 User Guide 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 864

YAMAHA WR 250F 2005 User Guide 3 - 49
INSP
ADJ
ENGINE IDLING SPEED 
ADJUSTMENT
1. Start the engine and thoroughly
warm it up.
2. Adjust:
Engine idling speed
Adjustment steps:
Adjust the pilot screw.
Refer to “PILOT SCREW
ADJUST

Page 338 of 864

YAMAHA WR 250F 2005 User Guide 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 864

YAMAHA WR 250F 2005 User Guide 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)
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