2005 YAMAHA YZ85 lock

5 - 61
CHAS
3. Adjust:

Spring length (installed) a
* For EUROPE
NOTE:
The length of the spring (installed) changes
1.5 mm (0.06 in) per turn of the adjuster.
CAUTION:
Never attempt to turn the adjuster beyond
the maximum or minimum setting.
4. Tighten:

Locknut 1
Spring length (installed) a:
YZ85: 215 mm (8.46 in)
*212 mm (8.35 in)
YZ85LW: 207 mm (8.15 in)
*212 mm (8.35 in)
Extent of adjustment
202.5 ~ 218.5 mm
(7.97 ~ 8.60 in)
5PA51920
5PA51930
Rear shock absorber
1. Install:

Rear shock absorber
2. Install:

Bolt (rear shock absorber-frame) 1

Washer 2

Nut (rear shock absorber-frame) 3
NOTE:
Apply the molybdenum disulfide grease on the
bolt.
3. Install:

Washer 1

Bolt (rear shock absorber-relay arm) 2
NOTE:

Apply the molybdenum disulfide grease on
the bolt.

Insert the bolt from left side.
5PA51940
T R..36 Nm (3.6 m · kg, 25 ft · lb)
5PA51950
T R..36 Nm (3.6 m · kg, 25 ft · lb)
REAR SHOCK ABSORBER

–+ELEC
SYSTEME D’ALLUMAGE
ZÜNDANLAGE
TEST DE LA LONGUEUR D’ETINCELLE
1. Déconnecter le capuchon de bougie.
2. Connecter le testeur dynamique d’étincelle 1
(contrôleur d’allumage 2) comme indiqué.

Capuchon de bougie 3

Bougie 4
ÈUSA et CDN
ÉSauf pour USA et CDN
3. Actionner le kick.
4. Contrôler la longueur d’étincelle d’allumage.
5. Démarrer le moteur et augmenter la longueur
d’étincelle jusqu’à ce qu’un raté se produise.
(uniquement USA et CDN)
Longueur d’étincelle minimum:
6,0 mm (0,24 in)
CONTROLE DES CONNEXIONS DES
COUPLEURS ET DES FILS
1. Contrôler:

Connexion des coupleurs et des fils
Rouille/poussière/jeu/court-circuit → Réparer
ou remplacer.
CONTROLE DU COUPE-CIRCUIT DU
MOTEUR
1. Contrôler:

Continuité du coupe-circuit du moteur
Pas de continuité lorsque enfoncé → Remplacer.
Continuité lorsque relâché → Remplacer. Fil (+) du multimètre →
fil noir/blanc 1

Fil (–) du multimètre →
fil noir 2

B/W
1B
2Position du
sélecteur du
multimètre
ENFON-
CE
Ω
×
1
RELA-
CHE
ZÜNDFUNKENSTRECKE KONTROLLIEREN
1. Den Zündkerzenstecker von der Zünd-
kerze abziehen.
2. Den Zündfunkenstreckentester 1 (bzw.
Zündprüfer 2) wie abgebildet anschließen.

Zündkerzenstecker 3

Zündkerze 4
ÈNur USA und CDN
ÉNicht USA und CDN
3. Den Motor mit dem Kickstarter durchdre-
hen.
4. Die Zündfunkenstrecke kontrollieren.
5. Den Motor starten und die Zündfunken-
strecke vergrößern, bis es zu Fehlzündun-
gen kommt. (nur USA und CDN)
Min. Zündfunkenstrecke:
6,0 mm (0,24 in)
STECKVERBINDER UND
KABELANSCHLÜSSE KONTROLLIEREN
1. Kontrollieren:

Steckverbinder und Kabelanschlüsse
Rost/Staub/Lockerheit/Kurzschluß →
Instand setzen oder erneuern.
MOTORSTOPPSCHALTER
KONTROLLIEREN
1. Kontrollieren:

Motorstoppschalter (auf Durchgang)
Kein Durchgang bei gedrücktem Schalter →
Erneuern.
Durchgang bei losgelassenem Schalter →
Erneuern.Meßkabel (+)
→ Schwarz/Weiß
1
Meßkabel (–)
→ Schwarz
2
B/W
1B
2Meßgerät-Ein-
stellung
GE-
DRÜCKT
Ω
× 1
FREI
6 - 3

6 - 4
–+ELECIGNITION SYSTEM
EC626002
IGNITION COIL INSPECTION
1. Inspect:

Primary coil resistance
Out of specification → Replace.
2. Inspect:

Secondary coil resistance
Out of specification → Replace.
NOTE:

Remove the spark plug cap by turning it
counterclockwise and inspect.

Install the spark plug cap by turning it clock-
wise until it is tight.
SPARK PLUG CAP INSPECTION
1. Inspect:

Spark plug cap
Loose connection → Tighten.
Deteriorated/Damaged → Replace.

Spark plug cap resistance
Out of specification → Replace. Tester (+) lead
→ Orange lead
1
Tester (–) lead
→ Black lead
2
Primary coil
resistanceTester selector
position
0.18 ~ 0.28
Ω at
20 °C (68 °F)Ω
× 1
Tester (+) lead
→ Spark plug lead
1
Tester (–) lead
→ Orange lead
2
Secondary coil
resistanceTester selector
position
6.3 ~ 9.5 k
Ω at
20 °C (68 °F)k
Ω
× 1
Tester (+) lead
→
Spark plug lead terminal
1
Tester (–) lead
→ Spark plug terminal
2
Spark plug cap
resistanceTester selector
position
4 ~ 6 k
Ω at
20 °C (68 °F)k
Ω
× 1
5PA60060
5PA60070
5PA60070
5PA60070
2
1

7 - 12
TUN
Front fork setting
The front fork setting should be made depend-
ing on the rider’s feeling of an actual run and
the circuit conditions.
The front fork setting includes the following
three factors:
1. Setting of air spring characteristics

Change the fork oil level.
2. Setting of spring preload

Change the spring.
3. Setting of damping force

Change the compression damping.

Change the rebound damping.
The spring acts on the load and the damp-
ing force acts on the cushion travel speed.
EC723001
Change in level and characteristics of fork
oil
Damping characteristic near the final stroke
can be changed by changing the fork oil
amount.
CAUTION:
Adjust the oil level in 5 mm (0.2 in) incre-
ments or decrements. Too low oil level
causes the front fork to produce a noise at
full rebound or the rider to feel some pres-
sure on his hands or body. Alternatively,
too high oil level will develop unexpectedly
early oil lock with the consequent shorter
front fork travel and deteriorated perfor-
mance an characteristics. Therefore, adjust
the front fork within the specified range.
ÈAir spring characteristics in relation to oil level
change
ÉLoad
ÊStroke
1Max. oil level
2Standard oil level
3Min. oil level
Standard oil level:
90 mm (3.54 in)
Extent of adjustment:
80 ~ 120 mm (3.15 ~ 4.72 in)
From top of outer tube with
inner tube and damper rod fully
compressed without spring.
5PA70130
SETTING

7 - 15
TUNSETTING
EC72C001
Choosing set length
1. Place a stand or block under the engine to
put the rear wheel above the floor, and
measure the length a between the rear
wheel axle center and the rear fender hold-
ing bolt.
5PA70160
2. Remove the stand or block from the engine
and with a rider astride the seat, measure
the sunken length b between the rear
wheel axle center and the rear fender hold-
ing bolt.
5PA70170
3. Loosen the locknut 1 and make adjust-
ment by turning the spring adjuster 2 to
achieve the standard figure from the sub-
traction of the length b from the length a.
Standard figure:
75 ~ 85 mm (3.0 ~ 3.3 in)
5PA70180
NOTE:

If the machine is new and after it is broken in,
the same set length of the spring may
change because of the initial fatigue, etc. of
the spring. Therefore, be sure to make re-
evaluation.

If the standard figure cannot be achieved by
adjusting the spring adjuster and changing
the spring set length, replace the spring with
an optional one and make re-adjustment.

TUN
REGLAGE
EINSTELLUNG
Choix de la longueur de ressort
1. Placer un support ou un bloc sous le moteur
pour surélever la roue arrière et mesurer la lon-
gueur a entre le centre de l’axe de roue arrière
et le boulon de fixation du garde-boue arrière.
2. Retirer le support ou le bloc et mesurer, avec
une personne assise correctement sur la selle, la
longueur b entre le centre de l’axe de roue
arrière et le boulon de fixation du garde-boue
arrière.
3. Desserrer le contre-écrou 1 et effectuer le
réglage en tournant le dispositif de réglage 2
de manière à atteindre la valeur standard, obte-
nue en soustrayant la longueur b de la lon-
gueur a.
Valeur standard:
75 à 85 mm (3,0 à 3,3 in)
N.B.:

Si la moto est nouvelle et après qu’elle a été
rodée, la longueur du ressort peut changer en rai-
son de la fatigue initiale, etc., du ressort. Il est
donc important de corriger les réglages régulière-
ment.

S’il est impossible d’atteindre la valeur standard à
l’aide du dispositif de réglage et en ajustant la
longueur du ressort, remplacer le ressort avec un
ressort en option et effectuer un nouveau réglage.Federeinbaulänge wählen
1. Das Motorrad am Motor aufbocken, um
das Hinterrad anzuheben, und den
Abstand a zwischen der Hinterachsmitte
und der Hinterrad-Abdeckungs- Schraube
messen.
2. Das Motor herablassen und bei aufsitzen-
dem Fahrer den Abstand b zwischen der
Hinterachsmitte und der Hinterrad-Abdek-
kungs-Schraube messen.
3. Die Sicherungsmutter 1 lockern und die
Einstellmutter 2 verdrehen, um die Stan-
dard-Federeinbaulänge durch Subtraktion
der Länge b von der Länge a zu erhal-
ten.
Standardwert:
75–85 mm (3,0–3,3 in)
HINWEIS:

Bei einer neuen Maschine kann sich die
Federeinbaulänge z.B. durch die Anfangser-
müdung der Feder beim Einfahren verän-
dern. Die Einstellung muß deshalb nach dem
Einfahren überprüft werden.

Kann die Standardlänge nicht durch Einstel-
lung erreicht werden, muß die Feder ersetzt
werden und die Einstellung ist neu vorzuneh-
men.
7 - 15

7 - 18
TUNSETTING
Suspension setting

Front fork
NOTE:

If any of the following symptoms is experienced with the standard position as the base, make
resetting by reference to the adjustment procedure given in the same chart.

Before any change, set the rear shock absorber sunken length to the standard figure 75 ~ 85 mm
(3.0 ~ 3.3 in).
SymptomSection
Check Adjust
JumpLarge
gapMedium
gapSmall
gap
Stiff over entire range
{{{Compression damping
Oil level (oil amount)
SpringTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Decrease oil level by about 5 ~ 10 mm (0.2 ~ 0.4 in).
Replace with soft spring.
Unsmooth movement
over entire range{{{{Outer tube
Inner tube
Under bracket tightening
torqueCheck for any bends, dents, and other noticeable
scars, etc. If any, replace affected parts.
Retighten to specified torque.
Poor initial
movement{Rebound damping
Oil sealTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Apply grease in oil seal wall.
Soft over entire range,
bottoming out{{Compression damping
Oil level (oil amount)
SpringTurn adjuster clockwise (about 2 clicks) to increase
damping.
Increase oil level by about 5 ~ 10 mm (0.2 ~ 0.4 in).
Replace with stiff spring.
Stiff toward stroke end{Oil level (oil amount) Decrease oil level by about 5 mm (0.2 in).
Soft toward stroke end,
bottoming out{Oil level (oil amount) Increase oil level by about 5 mm (0.2 in).
Stiff initial movement{{{{Compression dampingTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Low front, tending to
lower front posture{{Compression damping
Rebound damping
Balance with rear end
Oil level (oil amount)Turn adjuster clockwise (about 2 clicks) to increase
damping.
Turn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Set sunken length for 80 ~ 85 mm (3.1 ~ 3.3 in) when
one passenger is astride seat (lower rear posture).
Increase oil level by about 5 mm (0.2 in).
“Obtrusive” front, tend-
ing to upper front pos-
ture{{Compression damping
Balance with rear end
Spring
Oil level (oil amount)Turn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Set sunken length for 75 ~ 80 mm (3.0 ~ 3.1 in) when
one passenger is astride seat (upper rear posture).
Replace with soft spring.
Decrease oil level by about 5 ~ 10 mm (0.2 ~ 0.4 in).

7 - 19
TUNSETTING

Rear shock absorber
NOTE:

If any of the following symptoms is experienced with the standard position as the base, make
resetting by reference to the adjustment procedure given in the same chart.

Adjust the damping in 2-click increments or decrements.
SymptomSection
Check Adjust
JumpLarge
gapMedium
gapSmall
gap
Stiff, tending to sink
{{Rebound damping
Spring set lengthTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Set sunken length for 75 ~ 80 mm (3.0 ~ 3.1 in)
when one passenger is astride seat.
Spongy and unstable{{Rebound damping
SpringTurn adjuster clockwise (about 2 clicks) to increase
damping.
Replace with stiff spring.
Heavy and dragging{{Rebound damping
SpringTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Replace with soft spring.
Poor road gripping{Rebound damping
Compression damping
Spring set length
SpringTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Turn adjuster clockwise (about 2 clicks) to increase
damping.
Set sunken length for 75 ~ 80 mm (3.0 ~ 3.1 in)
when one passenger is astride seat.
Replace with soft spring.
Bottoming out{{Compression damping
Spring set length
SpringTurn adjuster clockwise (about 2 clicks) to increase
damping.
Set sunken length for 75 ~ 80 mm (3.0 ~ 3.1 in)
when one passenger in astride seat.
Replace with stiff spring.
Bouncing{{Rebound damping
SpringTurn adjuster clockwise (about 2 clicks) to increase
damping.
Replace with soft spring.
Stiff travel{{Compression damping
Spring set length
SpringTurn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Set sunken length for 80 ~ 85 mm (3.1 ~ 3.3 in)
when one passenger is astride seat.
Replace with soft spring.