2004 YAMAHA WR 250F oil

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Page 216 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 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 228 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 3 - 37
INSP
ADJ
5. Inspect:
Air filter element
Damage 
→ Replace.
6. Apply:
Foam-air-filter oil or equivalent
oil to the element
NOTE:Squeeze out the excess oil. Ele-
ment should be wet but not d

Page 230 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 3 - 39
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
1. Start the engine, warm it up for
several minutes, and then turn
off the engine and wait for five
minutes.
2. Place the machine on a level
place and hold

Page 232 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 3 - 41
INSP
ADJ
(Except for USA and CDN)
CAUTION:
Do not add any chemical addi-
tives or use oils with a grade of
CD a or higher.
Do not use oils labeled
“ENERGY CONSERVING II” b
or higher. Engi

Page 234 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 3 - 43
INSP
ADJ
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 2004  Manuale de Empleo (in Spanish) 3 - 45
INSP
ADJ
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 2004  Manuale de Empleo (in Spanish) 3 - 47
INSP
ADJ
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 2004  Manuale de Empleo (in Spanish) 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