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ENG
VALVES AND VALVE SPRINGS
Valve spring
1.
Measure:
• Valve spring free length
a
Out of specification
→
Replace.
Free length
(valve spring):
Intake:
37.81 mm (1.49 in)
<Limit>:
35.9 mm (1.41 in)
Exhaust:
37.54 mm (1.48 in)
<Limit>:
35.7 mm (1.41 in)
2.
Measure:
• Compressed spring force
a
Out of specification
→
Replace.
b
Installed length
3.
Measure:
• Spring tilt
a
Out of specification
→
Replace.
Compressed spring
force:
Intake:
99 ~ 114 N at
29.13 mm
(9.9 ~ 11.4 kg at
29.13 mm,
22.27 ~ 25.57 lb at
1.15 in)
Exhaust:
126 ~ 144 N at
29.30 mm
(12.6 ~ 14.4 kg at
29.30 mm,
28.44 ~ 32.41 lb at
1.15 in)
Spring tilt limit:
Intake:
2.5°/1.7 mm (0.067 in)
Exhaust:
2.5°/1.6 mm (0.063 in)
Valve lifter
1.
Inspect:
• Valve lifter
Scratches/damage
→
Replace
both lifters and cylinder head.
Ressort de soupape
1.
Mesurer:
• Longueur libre du ressort de sou-
pape
a
Hors spécifications
→
Rempla-
cer.
Longueur libre
(ressort de soupape):
Admission:
37,81 mm (1,49 in)
<Limite>:
35,9 mm (1,41 in)
Echappement:
37,54 mm (1,48 in)
<Limite>:
35,7 mm (1,41 in)
2.
Mesurer:
• Force du ressort comprimé
a
Hors spécifications
→
Rempla-
cer.
b
Longueur monté
3.
Mesurer:
• Inclinaison de ressort
a
Hors spécifications
→
Rempla-
cer.
Force du ressort
comprimé:
Admission:
99 à 114 N à 29,13 mm
(9,9 à 11,4 kg à
29,13 mm, 22,27 à
25,57 lb à 1,15 in)
Echappement:
126 à 144 N à
29,30 mm
(12,6 à 14,4 kg à
29,30 mm, 28,44 à
32,41 lb à 1,15 in)
Limite d’inclinaison de
ressort:
Admission:
2,5°/1,7 mm (0,067 in)
Echappement:
2,5°/1,6 mm (0,063 in)
Poussoir de soupape
1.
Contrôler:
• Poussoir de soupape
Rayures/endommagements
→
Remplacer les deux poussoirs et
la culasse.
SOUPAPES ET RESSORTS DE SOUPAPE
Содержание WR250F(R)
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