2002 YAMAHA YZ426F diagram

2 - 21
SPEC

CABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1
Hose guide
2
Brake hose
3
Fuel tank breather hose
4
Oil tank breather hose
5
Clamp
6
Sub wire harness
7
TPS (throttle position
sensor) lead
8
Neutral switch lead
9
Oil hose
0
Hose holder
A
CDI magneto lead
B
Clutch cable
C
Cylinder head breather hose
D
Carburetor breather hose
E
Overflow hose
Å
Pass the clutch cable through
the cable guide.
ı
Pass the fuel tank breather hose
between the handlebar and ten-
sion bar, then insert its end into
the hole of the number plate.
Ç
Pass the decompression cable
under the oil tank breather pipe.
Î
Fasten the CDI magneto lead
and neutral switch lead to the
frame with a plastic locking tie
and cut off the tie end.
‰
Fasten the sub wire harness to
the frame at the white tape for
the sub wire harness with a
plastic locking tie and cut off the
tie end.
Ï
Pass the cylinder head breather
hose along the right side of the
oil tank breather hose.
Ì
Fasten the sub wire harness to
the frame with a plastic locking
tie ends at the lower left of the
frame and cut off the tie end. For
fastening, pass the plastic lock-
ing tie through the upper holes
in the engine brackets.
Ó
Pass the sub wire harness
between the engine brackets.

2 - 22
SPEC

CABLE ROUTING DIAGRAM
È
Fasten the TPS lead (in the
sub wire harness) under the
frame so that it does not con-
tact the carburetor.
Ô
Make sure that the TPS lead
coupler does not go outside the
chassis.

Fasten the TPS lead under the
coupler to the frame with a
plastic locking tie.
Ò
Pass the carburetor breather
hose and overflow hose
between the connecting rod
and cross tube (frame).
˜Fasten the neutral switch lead
and oil hose together with a
plastic locking tie and cut off
the tie end.ˆFasten the cylinder head
breather hose with the hose
holder.
ØFasten the neutral switch lead
to the frame with a plastic band
ends toward the rear of the
frame.
∏Fasten the cylinder head
breather hose with the hose
holder.
ŒPass the clutch cable through
the cable guide.
ÂFasten the neutral switch lead
and CDI magneto lead together
with a plastic band.
ÍPass the clutch cable on the
inside the cylinder head
breather hose.ÊPass the cylinder head
breather hose along the inner
side of the radiator pipe.
ËPass the radiator breather
hose from the right side of the
frame to the left side, over radi-
ator pipe 1, along the inner side
of radiator hose 4 and the radi-
ator, and between the lower
engine bracket, crankcase, oil
hose and the frame.
◊Pass the clutch cable between
the frame and radiator and
over the lower boss on the radi-
ator.

2 - 23
SPEC
„Pass the neutral switch lead and
CDI magneto lead through the
cable guide and over the middle
radiator mounting boss. Then, pass
the decompression cable under the
middle radiator mounting boss and
along the left side of the neutral
switch lead and CDI magneto lead.
ÙFit the brake hose into the guides
on the protector.
ÁFasten the ignition coil lead (in the
sub wire harness) on the upper
inside of the frame and cut off the
tie end.
ÛPass the ignition coil lead (in the
sub wire harness) under the cush-
ion bracket (frame).Fasten the ignition coil lead (in the
sub wire harness) to the frame
and cut off the tie end.
Pass the carburetor breather
hoses and overflow hose so that
all there hoses do not contact the
rear shock absorber.AA
AB
CABLE ROUTING DIAGRAM

2 - 24
SPECCABLE ROUTING DIAGRAM
1Clamp
2Ignition coil
3High tension cord
4CDI unit
5CDI unit band
6“ENGINE STOP” button
lead
7Throttle cable (pull)
8Throttle cable (return)
9Radiator (left)
0Radiator breather hose
ARadiator (right)
BCDI unit stay (frame)ÅFasten the ignition coil lead to the
frame with a plastic band.
ıFasten the ignition coil and ground
lead to the frame with the bolt.
ÇPass the ignition coil lead (in the
sub wire harness) so that it does
not contact the carburetor and
rear shock absorber and connect
it with the lead from the ignition
coil on the inside of the frame.
ÎPass the throttle cables over the
high tension cord.
‰Pass the throttle cables along the
outer side of the CDI unit leads.
ÏFasten the CDI unit leads and
“ENGINE STOP” button lead to the
frame at the protector of the CDI
unit leads with a plastic locking tie.
ÌPass the radiator breather hose
on the outside the CDI unit lead
and “ENGINE STOP” button lead.ÓPass the CDI unit lead and
“ENGINE STOP” button lead over
the top radiator mounting boss.
ÈPass the throttle cables and
“ENGINE STOP” button lead
through the cable guide.
ÔCross the pull and return throttle
cables before the radiator.
Pass the throttle cables, “ENGINE
STOP” button lead and CDI unit
lead through the cable guide.
ÒPass the throttle cables between
the top radiator mounting boss and
middle radiator mounting boss.
˜Pass the radiator breather hose
between the frame and the radia-
tor without pinching it.
ˆPass the radiator breather hose
behind the decompression cable.
ØInsert the CDI unit band over the
CDI unit stay (frame) as far as
possible.

2 - 25
SPECCABLE ROUTING DIAGRAM
1Throttle cable
2Clamp
3Decompression cable
4Clutch cable
5Brake hose
6Hose guide
7“ENGINE STOP” button leadÅFasten the “ENGINE STOP” button lead to the handlebar with the
plastic band.
ıPass the brake hose in front of the number plate.

4 - 77
ENG
MAGNETO CDI
CDI-SCHWUNGRADMAGNETZÜNDER
4. Anschließen:
CDI-Schwungradmagnetzünder-Kabel
Siehe unter “KABELFÜHRUNG” im KA-
PITEL 2.
5. Montieren:
Dichtung [Kurbelgehäusedeckel (links)]
Kurbelgehäusedeckel (links) 1
Halterung (Zylinderkopf-Entlüftungs-
schlauch) 2
Schraube [Kurbelgehäusedeckel (links)]
HINWEIS:
Die Schrauben stufenweise über Kreuz fest-
ziehen.
6. Montieren:
Fußschalthebel 1
Schraube (Fußschalthebel)
HINWEIS:
Bei der Fußschalthebel-Montage auf der
Schaltwelle sicherstellen, daß die Mitte der
Fußschalthebel-Auflage 2 mm a oberhalb der
Oberkante der Fußraste liegt.
New
T R..10 Nm (1,0 m · kg)
4. Connecter:
Fil de magnéto CDI
Se référer au paragraphe “DIAGRAMME
DE CHEMINEMENT DE CABLE” au
CHAPITRE 2.
5. Monter:
Joint [couvercle de carter (gauche)]
Couvercle de carter (gauche) 1
Support de flexible (reniflard de culasse) 2
Boulon [couvercle de carter (gauche)]
N.B.:
Serrer les vis par étapes dans un ordre entrecroisé.
New
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
6. Monter:
Pédale de sélecteur 1
Boulon (pédale de sélecteur)
N.B.:
En remontant la pédale de sélecteur sur l’arbre de
sélecteur, s’assurer de placer le centre de la pédale
de sélecteur 2 mm a au-dessus du repose-pied.

6 - 1
–+ELEC

ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC600000
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000
ELECTRICAL COMPONENTS
1
“ENGINE STOP” button
2
TPS (throttle position sensor)
3
Neutral switch
4
CDI magneto
5
Ignition coil
6
Spark plug
7
CDI unit
COLOR CODE
B...................... Black
Br .................... Brown
G ..................... Green
L ...................... Blue
O ..................... Orange
P...................... Pink
R ..................... Red
Sb.................... Sky blue
EC612000
WIRING DIAGRAM
7
15
6
2 3 4
LY
BYL
B/LL
G
P
W
R
Y
B
G
B/YR PBrWG
RB Br WP
R/WW L/WSbWR/W Sb L/W
B/WG/BBB/W
Y
B/LL Sb B OY
LB/L B OSbSb
L/WR/W
WSb
B/L
B/WB/WG/B
B/W
Br
BB
LB
B
Y
O

W ..................... White
Y ...................... Yellow
B/L ................... Black/Blue
B/W .................. Black/White
B/Y ................... Black/Yellow
G/B................... Green/Black
L/W .................. Blue/White
R/W .................. Red/White

–+ELEC

ZÜNDANLAGE
ZÜNDANLAGE
FEHLERSUCHE
Folgendes Diagramm hilft zündanlagen- und zündkerzenbedingte Motorstörungen zu beheben.
* Nur wenn der Zündfunkenstreckentester verwendet wird
HINWEIS:


Die folgenden Teile vor Beginn der Störungsbeseitigung ausbauen.
1) Sitz
2) Kraftstofftank

Folgendes Spezialwerkzeug verwenden.
Zündfunkenstrecke
kontrollieren*Zündkerze reinigen
oder erneuern.
Kabelanschlüsse der
gesamten Zündenlage
kontrollieren.Erneuern oder instand
setzen.
Motorstoppschalter
“ENGINE STOP”
kontrollieren.Erneuern.
Zündspule kontrollieren. Primärspule Erneuern.
Sekundär-
spuleErneuern.
CDI-Schwungradmagnet-
zünder kontrollieren.Impulsgeber Erneuern.
Erregerspule Erneuern.
Leerlaufschalter
kontrollieren.Erneuern oder instand
setzen.
CDI-Zündbox erneuern.
Zündfunkenstreckentester
YM-34487
Zündprüfer
90890-06754
Taschen-Multimeter
YU-3112-C/90890-03112
Kein Zündfunke
In Ordnung
In Ordnung
In Ordnung
In Ordnung
Zündfunke
Nicht in Ordnung
In Ordnung
Nicht in Ordnung
Nicht in Ordnung
Nicht in Ordnung
Nicht in Ordnung
Nicht in Ordnung
Nicht in Ordnung

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