2000 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
“ENGINE STOP” button lead
7
Sub wire harness
8
TPS (throttle position sensor)
lead
9
Neutral switch lead
0
Oil hose
A
Hose holder
B
CDI magneto lead
C
Clutch cable
D
Cylinder head breather hose
E
Carburetor breather hose
F
Overflow hose

Pass the clutch cable through
the cable guide.
õ
Pass the fuel tank breather
hose between the handlebar
and tension bar, then insert its
end into the hole of the num-
ber plate.
‚
Pass the decompression cable
and “ENGINE STOP” button
lead under the frame.
ë
Pass the “ENGINE STOP” but-
ton lead along the inner side of
the decompression cable.
ä
Fasten the CDI magneto lead,
neutral switch lead and
“ENGINE STOP” button lead
to the frame with a plastic lock-
ing tie and cut off the tie end.
ì
Pass the “ENGINE STOP”
button lead along the inner
side of the oil tank breather
hose.
í
Fasten the sub wire harness
and “ENGINE STOP” button
lead to the frame with a plas-
tic locking tie and cut off the
tie end.
î
Pass the cylinder head breather
hose along the right side of the
oil tank breather hose.
é
Fasten the sub wire harness to
the frame with a plastic locking
tie and cut off the tie end.
ï
Fasten the TPS lead (in the
sub wire harness) under the
frame.

2 - 22
SPEC

CABLE ROUTING DIAGRAM
ð
Fasten the TPS lead under the
coupler to the frame with a plas-
tic locking tie.
ñPass 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.
öFasten the cylinder head
breather hose and neutral switch
lead to the frame with a plastic
locking tie.
¯Fasten the neutral switch lead to
the frame with a plastic band.¸Fasten the cylinder head
breather hose with the hose
holder.
ÎPass the clutch cable through
the cable guide.
åFasten the neutral switch lead
and CDI magneto lead
together with a plastic band.
êPass the clutch cable on the
inside the cylinder head
breather hose.
æPass the cylinder head
breather hose along the inner
side of the radiator pipe.
èPass the radiator breather
hose from the right side of the
frame to the left side, over
radiator pipe 1, along the innerside of radiator hose 4 and
the radiator, and between the
lower engine bracket, crank-
case, oil hose and the frame.
×Pass the clutch cable
between the frame and radia-
tor and over the lower boss on
the radiator.
ãPass the neutral switch lead
and CDI magneto lead over
the middle radiator mounting
boss. Then, pass the decom-
pression cable under the mid-
dle radiator mounting boss
and along the left side of the
neutral switch lead and CDI
magneto lead.

2 - 23
SPEC
ôFit the brake hose into the guide on
the protector.
çFasten the ignition coil lead (in the
sub wire harness) on the upper
inside of the frame and cut off the tie
end.
óPass the ignition coil lead (in the sub
wire harness) under the cushion
bracket (frame).
Fasten the ignition coil lead (in the
sub wire harness) to the frame with
a plastic locking tie.
Pass the carburetor breather hoses
and overflow hose so that all there
hoses do not contact the rear
shock absorber.

CABLE ROUTING DIAGRAM

2 - 24
SPECCABLE ROUTING DIAGRAM
1Clamp
2Ignition coil
3High tension cord
4CDI unit
5CDI unit band
6Throttle cable (pull)
7Throttle cable (return)
8Radiator (left)
9Radiator breather hose
0Radiator (right)
ACDI unit stay (frame)Fasten the ignition coil lead to the
frame with a plastic band.
õFasten the ignition coil and
ground lead to the frame with the
bolt.
‚Pass 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.
ëPass the throttle cables over the
high tension cord.
äPass the throttle cables along the
outer side of the CDI unit leads.
ìFasten the CDI unit leads to the
frame with a plastic locking tie.
íPass the throttle cables between
the top radiator mounting boss
and middle radiator mounting
boss.îPass the CDI unit leads over the
top radiator mounting boss.
éCross the pull and return throttle
cables before the radiator.
ïPass the throttle cables through
cable guide on the frame.
ðPass the radiator breather hose
between the frame and the radia-
tor without pinching it.
ñPass the radiator breather hose
behind the decompression cable.
÷Insert 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 leadFasten the “ENGINE STOP” button lead to the handlebar with the
plastic band.
õPass the brake hose in front of the number plate.

4 - 69
ENG
MAGNETO CDI
CDI-SCHWUNGRADMAGNETZÜNDER
2. Montieren:
lScheibenfeder 1
lRotor 2
HINWEIS:
lKurbelwellenzapfen und Rotor reinigen.
lBeim Einbau der Scheibenfeder darauf ach-
ten, daß deren flache Seite a parallel zur
Mittellinie b der Kurbelwelle angeordnet ist.
lBeim Einbau des Rotors die Nut c im Rotor
auf die Scheibenfeder ausrichten.
3. Montieren:
lBeilagscheibe
lMutter (Rotor) 1
Den Rotorhalter 2 verwenden.
Rotorhalter
YU-01235/90890-01235
T R..48 Nm (4,8 m · kg)
4. Kontrollieren:
lZündzeitpunkt
Den Zündzeitpunkt nochmals kontrollie-
ren.
5. Anschließen:
lCDI-Schwungradmagnetzünder-Kabel
Siehe unter “KABELFÜHRUNG” im KA-
PITEL 2.
6. Montieren:
lDichtung [Kurbelgehäusedeckel (links)]
lKurbelgehäusedeckel (links) 1
lHalterung (Zylinderkopf-Entlüftungs-
schlauch) 2
lSchraube [Kurbelgehäusedeckel (links)]
HINWEIS:
Die Schrauben stufenweise über Kreuz fest-
ziehen.
New
T R..10 Nm (1,0 m · kg)
2. Monter:
lClavette de demi-lune 1
lRotor 2
N.B.:
lNettoyer la partie conique de l’extrémité du vile-
brequin et le rotor.
lLors du montage de la clavette fendue, s’assurer
que sa surface plane a est parallèle à la ligne
centrale b du vilebrequin.
lLorsqu’on monte le rotor, aligner la rainure c du
rotor avec la clavette de demi-lune.
3. Monter:
lRondelle ordinaire
lEcrou (rotor) 1
Utiliser l’outil de maintien de rotor 2.
Outil de maintien de rotor:
YU-01235/90890-01235
T R..48 Nm (4,8 m · kg, 35 ft · lb)
4. Contrôler:
lAvance à l’allumage
Recontrôler l’avance à l’allumage.
5. Connecter:
lFil de magnéto CDI
Se référer au paragraphe “DIAGRAMME
DE CHEMINEMENT DE CABLE” au
CHAPITRE 2.
6. Monter:
lJoint [couvercle de carter (gauche)]
lCouvercle de carter (gauche) 1
lSupport de flexible (reniflard de culasse) 2
lVis [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 - 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
EC612000
WIRING DIAGRAM
7
15
6
2 3 4
LY
BYL
B/LL
G
P
W
R
Y
B
G
BR PBrWG
RB Br WP
R/W WL/W SbW R/W Sb L/WY
B/LL Sb B OY
LB/L B OSbSb
L/WR/W
WSb
B/L
B/WB/W
B/WB/W
Br
BB
LBBY
O
N
13
4
5 2

Sb .................... Sky blue
W ..................... White
Y ...................... Yellow
B/L ................... Black/Blue
B/W .................. Black/White
L/W .................. Blue/White
R/W .................. Red/White
6

–+ELEC

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

l
Die folgenden Teile vor Beginn der Störungsbeseitigung ausbauen.
1) Sitz
2) Kraftstofftank
l
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-03112/90890-03112
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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