2003 YAMAHA WR 250F check oil

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Page 207 of 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 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 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 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 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 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 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 3 - 47
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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 270 of 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 3 - 79
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DRIVE CHAIN INSPECTION
1. Remove:
Drive chain 
1 
NOTE:Remove the drive chain using a drive
chain cutter 
2.
2. Clean:
Drive chain
Brush off as much dirt as pos-
sible. Then clean th

Page 272 of 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 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 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 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

Page 300 of 860

YAMAHA WR 250F 2003  Manuale de Empleo (in Spanish) 3 - 109
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2. Attach:
Timing light 
Inductive tachometer 
To the ignition coil lead
(orange lead 
1).
Timing light:
YM-33277-A/
90890-03141
Inductive tachometer:
YU-8036-B
Engine tachometer:
9