2005 YAMAHA WR 250F check oil

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Page 207 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 16
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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 234 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 43
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4. Remove:
Oil tank cap 
1 
Oil filler cap 
2 
Frame oil drain bolt 
3 
Crankcase oil drain bolt 
4 
Oil filter element drain bolt 
5 
Drain the crankcase and oil
tank (frame) of

Page 236 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 45
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8. Install:
Copper washer 
1 
Oil strainer (frame) 
2 
Oil hose 
3 
Bolt (oil hose) 
4 
Oil hose clamp 
5 
Lower engine bracket
9. Install:
Copper washer
Oil filter element dra

Page 238 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 47
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OIL PRESSURE INSPECTION
1. Check:
Oil pressure
Checking steps:
Slightly loosen the oil pressure
check bolt 
1.
Start the engine and keep it
idling until oil starts to seep from
the

Page 240 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 49
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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 270 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 79
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DRIVE CHAIN INSPECTION
1. Measure:
Drive chain length (15 links) 
a 
Out of specification 
→ 
Replace.
NOTE:While measuring the drive chain
length, push down on the drive
chain to

Page 272 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 81
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6. Install:
Chain joint 
1 
O-ring 
2 
Drive chain 
3 
NOTE:When installing the drive chain, apply
the lithium soap base grease on the
chain joint and O-rings.
7. Install:
Link pla

Page 290 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 99
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EC36Q000TIRE PRESSURE CHECK
1. Measure:
Tire pressure
Out of specification 
→ Adjust.
NOTE:Check the tire while it is cold.
Loose bead stoppers allow the tire
to slip off its posi