ignition YAMAHA WR 250F 2004 Betriebsanleitungen (in German)

YAMAHA WR 250F 2004 Betriebsanleitungen (in German) WR 250F 2004 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52336/w960_52336-0.png YAMAHA WR 250F 2004 Betriebsanleitungen (in German)

Page 300 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 3 - 109
INSP
ADJ
2. Attach:
Timing light 
Inductive tachometer 
To the ignition coil lead
(orange lead 
1).
Timing light:
YM-33277-A/
90890-03141
1
3. Adjust:
Engine idling speed
Refer to “ENGINE

Page 320 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 3 - 129
INSP
ADJ
2. Check: 
Continuity
2Reserve fuse
Checking steps:
Remove the fuse 
1.
Connect the pocket tester to the
fuse and check the continuity.
NOTE:Set the pocket tester selector to
“

Page 536 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 4 - 211
ENGENGINE REMOVAL
Extent of removal:
1 Engine removal
Extent of removal Order Part name Q’ty Remarks
Ignition coil
Disconnect the AC magneto lead.
Starter motor lead Disconnect at the starte

Page 738 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 1
–+ELECELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC600000
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000ELECTRICAL COMPONENTS
1Headlight
2Engine stop switch
3Clutch switch

Page 740 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 3
–+ELECMAP-CONTROLLED CDI UNIT
MAP-CONTROLLED CDI UNIT
A map-controlled, CDI ignition system is used in the WR250F.
The microcomputer in the CDI unit detects the engine speed and throttle posit

Page 745 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 8
–+ELECIGNITION SYSTEM
EC620000
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to ignition system failure

Page 750 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 13
–+ELECIGNITION SYSTEM
SPARK GAP TEST
1. Disconnect the ignition coil from
spark plug.
2. Remove the ignition coil cap.
3. Connect the dynamic spark
tester 
1 (ignition checker 
2) as
shown.


Page 752 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 15
–+ELECIGNITION SYSTEM
2. Inspect: 
Rubber part 
a 
Tears/damage 
→ Replace.
a
MAIN SWITCH INSPECTION
1. Inspect:
Main switch conduct
Continuous while the main switch is
moved to “OFF”

Page 754 of 864

YAMAHA WR 250F 2004  Betriebsanleitungen (in German) 6 - 17
–+ELECIGNITION SYSTEM
EC626002IGNITION COIL INSPECTION
1. Remove the ignition coil cap.
2. Inspect:
Primary coil resistance
Out of specification 
→ 
Replace.
Tester (+) lead →
 Orange le

Page 756 of 864

YAMAHA WR 250F 2004  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
 
Pic
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