2001 YAMAHA WR 426F coolant reservoir

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Page 89 of 762

YAMAHA WR 426F 2001  Owners Manual 2 - 16
SPECMAINTENANCE SPECIFICATIONS (WR426F)
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.Part to be tightened Thread size Q’tyTightening torque

Page 106 of 762

YAMAHA WR 426F 2001  Owners Manual 2 - 33
SPECMAINTENANCE SPECIFICATIONS (WR400F)
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.Part to be tightened Thread size Q’tyTightening torque

Page 218 of 762

YAMAHA WR 426F 2001  Owners Manual  
2 - 38
SPEC
 
CABLE ROUTING DIAGRAM 
EC240000 
CABLE ROUTING DIAGRAM 
1 
Hose guide 
2 
Brake hose 
3 
Regulator 
4 
Fuel tank breather hose 
5 
Oil tank breather hose 
6 
Clamp 
7 
“ENGINE STOP

Page 222 of 762

YAMAHA WR 426F 2001  Owners Manual 2 - 40
SPECCABLE ROUTING DIAGRAM
1Coolant reservoir tank 
breather hose
2Clamp
3Ignition coil
4High tension cord
5CDI unit
6CDI unit band
7Radiator (left)
8Radiator (right)
9Decompression cable
0CDI u

Page 238 of 762

YAMAHA WR 426F 2001  Owners Manual  
3 - 4
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 g

Page 244 of 762

YAMAHA WR 426F 2001  Owners Manual  
3 - 6
INSP
ADJ
 
COOLANT REPLACEMENT
CAUTION:
 
Take care so that coolant does not splash
on painted surfaces. If it splashes, wash it 
away with water. 
1. Place a container under the engine.
2. Re

Page 246 of 762

YAMAHA WR 426F 2001  Owners Manual 3 - 7
INSP
ADJ
COOLANT REPLACEMENT
9. Fill:
lRadiator
lEngine
To specified level.
CAUTION:
lDo not mix more than one type of ethyl-
ene glycol antifreeze containing corro-
sion inhibitors for aluminum

Page 248 of 762

YAMAHA WR 426F 2001  Owners Manual 3 - 8
INSP
ADJRADIATOR CAP INSPECTION/
RADIATOR CAP OPENING PRESSURE INSPECTION
12. Install:
lCoolant reservoir cap
13. Start the engine and let it warm up for
several minutes.
14. Turn off the engine
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