2007 YAMAHA WR 250F fuse

MAINTENANCE SPECIFICATIONS
2 - 18
SPEC
NOTE:
Tighten the rotor nut to 65 Nm (6.5 m  kg, 47 ft  lb), loosen and retighten the rotor nut to 65 Nm
(6.5 m  kg, 47 ft  lb). Starter relay:
Model/manufacturer 2768090-A/JIDECO ----
Amperage rating 180 A ----
Coil winding resistance 4.2 ~ 4.6 Ω at 20 °C (68 °F) ----
Starting circuit cut-off relay:
Model/manufacturer ACM33221 M06/MATSUSHITA ----
Coil winding resistance 75.69 ~ 92.51 Ω at 20 °C (68 °F) ----
Fuse (amperage × quantity):
Main fuse 10 A × 1 ----
Reserve fuse 10 A × 1 ----
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Stator M5 × 0.8 2 7 0.7 5.1
Holder (AC magneto lead) M5 × 0.8 2 7 0.7 5.1
Rotor M12 × 1.25 1 Refer to NOTE.
Neutral switch M5 × 0.8 2 4 0.4 2.9
Starter motor M6 × 1.0 2 10 1.0 7.2
Starter relay terminal M6 × 1.0 2 4 0.4 2.9
Negative lead and cylinder head M6 × 1.0 1 10 1.0 7.2
Pickup coil M6 × 1.0 2 10 1.0 7.2 Item Standard Limit

3 - 141
INSP
ADJ
6. Install:
Battery
Battery band
7. Connect:
Battery leads
(to the battery terminals)
CAUTION:
First, connect the positive lead 1,
then the negative lead 2.
8. Check:
Battery terminals
Dirt
→ Clean with a wire
brush.
Loose connection
→ Connect
properly.
9. Lubricate:
Battery terminal
10. Install:
Seat
Recommended
lubricant:
Lithium soap base
grease
BATTERY REPLACEMENT
1. Replace:
Battery
CAUTION:
This battery is for YAMAHA
WR250F.
After filling the battery with elec-
trolyte, either charge it for at least
3 hours at the amperage specified
on the battery or let it sit for at
least 15 hours before using it.
EAS00181 FUSE INSPECTION
CAUTION:
To avoid a short circuit, always set
the main switch to “OFF” when
checking or replacing a fuse.
1. Remove:
Seat
Fuse cover6. Monter:
Batterie
Sangle de la batterie
7. Connecter:
Câbles de la batterie
(aux bornes de la batterie)
ATTENTION:
Connecter d’abord le câble positif 1,
puis le câble négatif 2.
8. Contrôler:
Bornes de la batterie
Saleté → Nettoyer avec une
brosse métallique.
Connexion lâche → Brancher
correctement.
9. Lubrifier:
Bornes de la batterie
10. Monter:
Selle
Lubrifiant recommandé:
graisse à savon de
lithium
REMPLACEMENT DE LA
BATTERIE
1. Remplacer:
Batterie
ATTENTION:
Cette batterie est destinée à la
YAMAHA WR250F.
Après avoir rempli la batterie d’élec-
trolyte, la charger pendant au moins 3
heures à l’ampérage spécifié sur la
batterie ou la laisser reposer pendant
au moins 15 heures avant de l’utiliser.
CONTROLE DES FUSIBLES
ATTENTION:
Pour éviter un court-circuit, toujours
placer le contacteur à clé sur “OFF”
avant de contrôler ou de remplacer un
fusible.
1. Déposer:
Selle
Couvercle de la boîte à fusibles
ELECTRICAL
PARTIE ELECTRIQUE

3 - 143
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
“
Ω
× 1”.
Pocket tester:
YU-3112-C/
90890-03112
If the pocket tester indicates
“
∞”, replace the fuse.
2
1
3. Replace:
Blown fuse
WARNING
Never use a fuse with an amper-
age rating other than that speci-
fied. Improvising or using a fuse
with the wrong amperage rating
may cause extensive damage to
the electrical system, cause the
starting and ignition systems to
malfunction and could possibly
cause a fire.
4. Install:
Fuse cover
Seat Replacement steps:
Set the main switch to “OFF”.
Install a new fuse of the correct
amperage.
Set on the switches to verify if
the electrical circuit is opera-
tional.
If the fuse immediately blows
again, check the electrical cir-
cuit.
ItemsAmperage
ratingQ’ty
Main fuse 10 A 1
2. Contrôler:
Continuité
2
Fusible de réserve
Etapes du contrôle:
Déposer le fusible 1
.
Connecter le multimètre au fusible
et contrôler la continuité du circuit.
N.B.:
Régler le sélecteur du multimètre sur
“Ω × 1”.
Multimètre:
YU-3112-C/90890-03112
Si le multimètre indique “∞”, rem-
placer le fusible.
3. Remplacer:
Fusible grillé
AVERTISSEMENT
Ne jamais utiliser un fusible d’ampé-
rage différent de celui spécifié. Toute
improvisation ou la mise en place d’un
fusible d’un ampérage incorrect ris-
que de gravement endommager le cir-
cuit électrique, de provoquer un
mauvais fonctionnement des systèmes
de démarrage et d’allumage, voire de
provoquer un incendie.
4. Monter:
Couvercle de la boîte à fusibles
Selle Etapes de remplacement:
Placer le contacteur à clé sur
“OFF”.
Monter un nouveau fusible
d’ampérage correct.
Mettre les contacteurs en circuit
pour s’assurer que le circuit électri-
que fonctionne.
Si le fusible grille de nouveau, con-
trôler le circuit électrique.
Eléments Ampérage Qté
Fusible
principal10 A 1
ELECTRICAL
PARTIE ELECTRIQUE

7 - 1
–+ELECELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC600000
ELECTRICAL
NOTE:This section is intended for those who have basic knowledge and skill concerning the servicing of Yamaha motorcycles
(e.g., Yamaha dealers, service engineers, etc.) Those who have little knowledge and skill concerning servicing are
requested not to undertake inspection, adjustment, disassembly, or reassembly only by reference to this manual. It may
lead to servicing trouble and mechanical damage.
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000ELECTRICAL COMPONENTS
1Headlight
2Multi-function display
3Engine stop switch
4Clutch switch
5Diode
6Starter relay diode7Throttle position sensor
8Starter relay
9Fuse
0Starting circuit cut-off relay
ACDI unit
BTaillightCNeutral switch
DStarter motor
EAC magneto
FRectifier/regulator
GIgnition coil
HSpark plugIStart switch
JMain switch
KSpeed sensor
LBattery

7 - 3
–+ELECELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC612000WIRING DIAGRAM
1Headlight
2Multi-function display
3Engine stop switch
4Clutch switch
5Diode
6Starter relay diode
7Throttle position sensor
8Starter relay
9Fuse
0Starting circuit cut-off relay
ACDI unitBTaillight
CNeutral switch
DStarter motor
EAC magneto
FRectifier/regulator
GIgnition coil
HSpark plug
IStart switch
JMain switch
KSpeed sensor
LBatteryCOLOR CODE
B ...................... Black
Br ..................... Brown
Ch .................... Chocolate
Dg .................... Dark green
G...................... Green
Gy .................... Gray
L ...................... Blue
O...................... Orange
R ...................... RedSb .................... Sky blue
W ..................... White
Y ...................... Yellow
B/L ................... Black/Blue
B/W .................. Black/White
L/B ................... Blue/Black
L/R ................... Blue/Red
L/Y ................... Blue/Yellow
L/W .................. Blue/White
R/B................... Red/Black
R/W.................. Red/White

7 - 5
–+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
and for checking the spark plug which will not spark.
*1 marked: Refer to “FUSE INSPECTION” section in the CHAPTER 3.
*2 marked: Refer to “BATTERY INSPECTION AND CHARGING” section in the CHAPTER 3.
*3 marked: Only when the ignition checker is used.
NOTE:•Remove the following parts before inspection.
1) Seat
2) Fuel tank
•Use the following special tools in this inspection.
*1 Check fuse.Replace fuse and check
wire harness.
*2 Check battery. Recharge or replace.
Spark gap test*3 Clean or replace spark
plug.
Check entire ignition system for
connection.
(couplers, leads and ignition coil)Repair or replace.
Check engine stop switch. Replace.
Check main switch.Replace.
Check ignition coil. Primary coil Replace.
Secondary coil Replace.
Check AC magneto. Pickup coil Replace.
Check neutral switch. Repair or replace.
Replace CDI unit.
Dynamic spark tester:
YM-34487
Ignition checker:
90890-06754
Pocket tester:
YU-3112-C/
90890-03112
No good
OK
No good
OK
Spark
No spark
No good
OK
No good
OK
No good
OK
No good
OKNo good
No good
OK
No good
OK

7 - 19
–+ELECELECTRIC STARTING SYSTEM
ELECTRIC STARTING
SYSTEM
STARTING CIRCUIT CUT-OFF
SYSTEM OPERATION
If the main switch is set to “ON”, the
starter motor can only operate if at
least one of the following conditions
is met:
•The transmission is in neutral (the
neutral switch is closed).
•The clutch lever is pulled to the
handlebar (the clutch switch is
closed).
The starting circuit cut-off relay pre-
vents the starter motor from operat-
ing when neither of these conditions
has been met. In this instance, the
starting circuit cut-off relay is open so
current cannot reach the starter
motor. When at least one of the
above conditions has been met the
starting circuit cut-off relay is closed
and the engine can be started by
pressing the start switch.
WHEN THE TRANS-
MISSION IS IN NEU-
TRAL
WHEN THE CLUTCH
LEVER IS PULLED
TO THE HANDLEBAR
1Battery
2Main fuse
3Main switch
4Starting circuit cut-off relay
5Start switch
6Diode
7Clutch switch
8Neutral switch
9Starter relay
0Starter motor
12
M
3
4
5
8 76 9
0
DEMARRAGE
ELECTRIQUE
FONCTIONNEMENT DU
DISPOSITIF DE COUPURE DU
CIRCUIT DE DEMARRAGE
Si le contacteur à clé est sur “ON”, le
démarreur ne peut fonctionner que si
l’une au moins des conditions suivantes
est remplie:
la boîte de vitesses est au point mort
(le circuit du contacteur de point mort
est fermé).
le levier d’embrayage est tiré vers le
guidon (le contacteur d’embrayage est
fermé).
Le relais de coupe-circuit de démarrage
empêche le démarreur de fonctionner
lorsque aucune des deux conditions n’est
remplie. Dans ce cas, le relais de coupe-
circuit de démarrage est ouvert, de sorte
que le courant ne peut atteindre le
démarreur. Lorsqu’une au moins des
conditions ci-dessus est remplie, le relais
de coupe-circuit de démarrage est fermé
et le moteur peut être démarré à l’aide du
contacteur du démarreur.
LORSQUE LA BOITE
DE VITESSE EST AU
POINT MORT
LORSQUE LE LEVIER
D’EMBRAYAGE EST
TIRE VERS LE GUI-
DON
1
Batterie
2
Fusible principal
3
Contacteur à clé
4
Relais de coupe-circuit de démarrage
5
Contacteur du démarreur
6
Diode
7
Contacteur d’embrayage
8
Contacteur de point mort
9
Relais de démarreur
0
Démarreur
DEMARRAGE ELECTRIQUE

7 - 21
–+ELECELECTRIC STARTING SYSTEM
INSPECTION STEPS
If the starter motor will not operate, use the following inspection steps.
*1 marked: Refer to “FUSE INSPECTION” section in the CHAPTER 3.
*2 marked: Refer to “BATTERY INSPECTION AND CHARGING” section in the CHAPTER 3.
*3 marked: Refer to “MAIN SWITCH INSPECTION” section.
*4 marked: Refer to “NEUTRAL SWITCH INSPECTION” section.
NOTE:•Remove the following parts before inspection.
1) Seat
2) Rear fender
•Use 12 V battery in this inspection.
•Use the following special tools in this inspection.
*1 Check fuse.Replace fuse and check
wire harness.
*2 Check battery. Recharge or replace.
Check each coupler and wire
connection.Repair or replace.
*3 Check main switch. Replace.
Check starter motor operation. Repair or replace.
Check starting circuit cut-off relay. Replace.
Check starter relay.Replace.
*4 Check neutral switch. Replace.
Check clutch switch.Replace.
Check diode.Replace.
Check start switch.Replace.
Pocket tester:
YU-3112-C/
90890-03112
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good
OK
No good