ad blue YAMAHA WR 250F 2006 Betriebsanleitungen (in German)

YAMAHA WR 250F 2006 Betriebsanleitungen (in German) WR 250F 2006 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52334/w960_52334-0.png YAMAHA WR 250F 2006 Betriebsanleitungen (in German)

Page 408 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 67
ENGCAMSHAFTS
5. Remove:
Exhaust camshaft 
1 
Intake camshaft 
2 
NOTE:Attach a wire 
3 to the timing chain to
prevent it from falling into the crank-
case.
1
2
3
INSPECTION
Camshaft
1. Inspec

Page 438 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 97
ENGVALVES AND VALVE SPRINGS
5. Measure:
Runout (valve stem)
Out of specification 
→ 
Replace.
NOTE:When installing a new valve
always replace the guide.
If the valve is removed or replaced

Page 440 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 99
ENGVALVES AND VALVE SPRINGS
9. Lap:
Valve face
Valve seat
NOTE:After refacing the valve seat or
replacing the valve and valve guide,
the valve seat and valve face should
be lapped.
Lapping st

Page 458 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 117
ENGCYLINDER AND PISTON
End gap:
Standard <Limit>
Top ring
0.15 ~ 0.25 mm 
(0.006 ~ 
0.010 in)0.50 mm 
(0.020 in)
2nd ring
0.30 ~ 0.45 mm 
(0.012 ~ 
0.018 in)0.80 mm 
(0.031 in)
Oil ring
0.10 ~

Page 764 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 1
–+ELECELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC600000
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000ELECTRICAL COMPONENTS
1Headlight
2Multi-function display
3Engine st

Page 782 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 19
–+ELECIGNITION SYSTEM
AC MAGNETO INSPECTION
1. Inspect:
•Pickup coil resistance
Out of specification 
→ 
Replace.
Tester (+) lead →
 Red lead 1
 
Tester (–) lead →
 White lead 2
 
P

Page 792 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 29
–+ELECELECTRIC STARTING SYSTEM
EC624000COUPLERS AND LEADS 
CONNECTION INSPECTION
1. Check:
•Couplers and leads connec-
tion 
Rust/dust/looseness/short-cir-
cuit 
→ Repair or replace.
STAR

Page 796 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 33
–+ELECELECTRIC STARTING SYSTEM
DIODE INSPECTION
1. Remove the diode from wire har-
ness.
2. Inspect:
•Diode continuity
Use pocket tester 
(tester selection position 
Ω 
× 1) 
Incorrect c

Page 822 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 59
–+ELECTHROTTLE POSITION SENSOR SYSTEM
HANDLING NOTE
CAUTION:
Do not loosen the screws (throttle
position sensor) 1
 except when
changing the throttle position sen-
sor due to failure because

Page 828 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 6 - 65
–+ELECTHROTTLE POSITION SENSOR SYSTEM
8. Tighten:
•Screw 
(throttle position sensor) 
1 
9. Stop the engine.
1
THROTTLE POSITION SENSOR 
INPUT VOLTAGE INSPECTION
1. Disconnect the throttle
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