Yamaha YZ250N Owner's Service Manual page 259

Jeu de piston
1. Calculer:
9 Jeu de piston
Hors limite Changer le piston,
les segments et/ou le cylindre.
Se reporter à "Cylindre" et "Pis-
ton".
JEU DE ALESAG DU
= –
PISTON CYLINDRE
Jeu de piston:
Standard <Limite>
0,045~0,050 mm 0,1 mm
(0,0018~0,0020 in) (0,004 in)
Combinaison de piston et cylindre
1. Contrôler:
9 Marque de cylindre a
Marque de
Taille de piston
cylindre a a
66,400~66,402 mm
A
(2,61417~2,61425 in)
66,404~66,406 mm
B
(2,61433~2,61441 in)
66,408~66,410 mm
C
(2,61449~2,61457 in)
66,412~66,414mm
D
(2,61465~2,61472 in)
2. Contrôler:
9 Marque de piston a
Marque de
piston a a
Taille de piston
(couleur)
66,352~66,355mm
A (rouge)
(2,61228~2,61240 in)
66,356~66,359 mm
B (orange)
(2,61244~2,61256 in)
66,360~66,363mm
C (vert)
(2,61260~2,61272 in)
66,364~66,367mm
D (pourpre)
(2,61276~2,61287 in)
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
Kolbenspiel
1. Berechnen:
9 Kolbenspiel
Außerhalb des Grenzwertes
oder Zylinder erneuern.
Siehe unter „Zylinder" und
„Kolben".
DIAMETRE
DE PISTON
KOLBEN-
SPIEL
Standard
0,045~0,050 mm
(0,0018~0,0020 in)
Kombination von Kolben und
Zylinder
1. Kontrollieren:
9 Zylindermarkierung a
Zylinder-
markierung a a
A
B
C
D
2. Kontrollieren:
9 Kolbenmarkierung a
Kolben-
markierung a a
(farben)
A (rot)
B (orange)
C (grün)
D (violent)
Kolben, Kolbenringe und/
KOLBEN-
ZYLINDER-
= –
DURCH-
BOHRUNG
MESSER
Kolbenspiel:
<Grenze>
0,1 mm
(0,004 in)
Zylindergröße
66,400~66,402 mm
(2,61417~2,61425 in)
66,404~66,406 mm
(2,61433~2,61441 in)
66,408~66,410 mm
(2,61449~2,61457 in)
66,412~66,414 mm
(2,61465~2,61472 in)
Kolbengröße
66,352~66,355 mm
(2,61228~2,61240 in)
66,356~66,359 mm
(2,61244~2,61256 in)
66,360~66,363 mm
(2,61260~2,61272 in)
66,364~66,367 mm
(2,61276~2,61287 in)
4-24
ENG
IC474602
Gioco del pistone
1. Calcolare
9 Gioco del pistone
Fuori limite Sostituire il pisto-
ne e la fascia elastica e/o il
cilindro.
Consultare "Cilindro" e "Pisto-
ne".
GIOCO ALESAG-
DEL = GIO DEL –
CILINDRO CILINDRO
Gioco del pistone:
Valore normale <Limite>
0,045~0,050 mm 0,1 mm
(0,0018~0,0020 in) (0,004 in)
IC474700
Combinazione di pistone e cilindro
1. Controllare:
9 Tacca del cilindro a
Tacca del Dimensioni
cilindro a a
del cilindro
66,400~66,402 mm
A
(2,61417~2,61425 in)
66,404~66,406 mm
B
(2,61433~2,61441 in)
66,408~66,410 mm
C
(2,61449~2,61457 in)
66,412~66,414 mm
D
(2,61465~2,61472 in)
2. Controllare:
9 Tacca del pistone a
Tacca del
Dimensioni
pistone a a
del pistone
(colore)
66,352~66,355 mm
A (rossa)
(2,61228~2,61240 in)
66,356~66,359 mm
B (arancione)
(2,61244~2,61256 in)
66,360~66,363 mm
C (verde)
(2,61260~2,61272 in)
66,364~66,367 mm
D (porpora)
(2,61276~2,61287 in)
DIAME-
TRO DEL
PISTONE