YAMAHA WR 400F 2002 Manuale de Empleo (in Spanish)

YAMAHA WR 400F 2002 Manuale de Empleo (in Spanish) WR 400F 2002 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52438/w960_52438-0.png YAMAHA WR 400F 2002 Manuale de Empleo (in Spanish)
Trending: brakes, engine oil, recommended oil, maintenance schedule, oil pressure, lug pattern, seat adjustment

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
 
4 - 44 
CYLINDRE ET PISTON 
ZYLINDER UND KOLBEN 
CILINDRO Y PISTÓN 
Zylinderboh-
rung “C”WR426F:
95,00– 
95,01 mm
WR400F:
92,00–
92,01 mm
Konizität “T”0,05 mm
Unrundheit 
“R”0,

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) 4 - 45
ENGCYLINDER AND PISTON
3rd step:
Calculate the piston-to-cylinder clearance
with following formula:
Piston-to-cylinder clearance =
Cylinder bore “C” –
Piston skirt diameter “P”
Pisto

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
4 - 45
CYLINDRE ET PISTON
ZYLINDER UND KOLBEN
CILINDRO Y PISTÓN
3. Schritt
Kolbenlaufspiel nach der fol-
genden Formel berechnen:
Kolbenlaufspiel = 
Zylinderbohrung “C” – 
Kolbenschaftdurc

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) 4 - 46
ENGCYLINDER AND PISTON
3. Measure:
Ring end gap 
Out of specification → Replace.
NOTE:
You cannot measure the end gap on the
expander spacer of the oil control ring. If the oil
control ring

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
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CYLINDRE ET PISTON
ZYLINDER UND KOLBEN
CILINDRO Y PISTÓN
3. Messen:
Stoßspiel
Unvorschriftsmäßig → Kol-
benring erneuern.
HINWEIS:
Das Stoßspiel der Ölabstreifring-Ex-
panderfeder

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) 4 - 47
ENGCYLINDER AND PISTON
2. Measure:
Piston pin-to-piston clearance
ASSEMBLY AND INSTALLATION
Piston
1. Install:
Piston rings
Onto the piston.
NOTE:
Be sure to install the piston rings so that

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
4 - 47
CYLINDRE ET PISTON
ZYLINDER UND KOLBEN
CILINDRO Y PISTÓN
2. Messen:
Kolbenbolzenspiel
ZUSAMMENBAU UND MONTAGE 
Kolben
1. Montieren:
Kolbenringe
(auf den Kolben)
HINWEIS:
Die Kolbenringe

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) 4 - 48
ENG
2. Position:
Top ring
2nd ring
Oil ring
Offset the piston ring end gaps as
shown.
aTop ring end
b2nd ring end
cOil ring end (upper)
dOil ring
eOil ring end (lower)
45°
135°135°
a
b ce

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
4 - 48
2. Montieren:
1. Kompressionsring (Topring)
2. Kompressionsring
Ölabstreifring
Ringstöße laut Abbildung ver-
setzen.
aRingstoß (1. Kompressionsring)
bRingstoß (2. Kompressionsring)

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YAMAHA WR 400F 2002  Manuale de Empleo (in Spanish) ENG
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CLUTCH (WR426F)
CLUTCH (WR426F)
CLUTCH
Extent of removal:1 Push rod and push lever removal2 Push pod 1 disassembly
3 Friction plate and clutch plate removal4 Clutch housing removal
Extent o
Trending: brake sensor, brakes, steering, tire pressure, check oil, length, OBD port