VALVES AND VALVE SPRINGS
5-42
4. Lap:
• Valve face
• Valve seat
NOTE:
After replacing the cylinder head or replacing the
valve and valve guide, the valve seat and valve
face should be lapped.
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a. Apply a coarse lapping compound “a” to the
valve face.
CAUTION:
ECA13790
Do not let the lapping compound enter the
gap between the valve stem and the valve
guide.
b. Apply molybdenum disulfide oil onto the
valve stem.
c. Install the valve into the cylinder head.
d. Turn the valve until the valve face and valve
seat are evenly polished, then clean off all of
the lapping compound.
NOTE:
For the best lapping results, lightly tap the valve
seat while rotating the valve back and forth be-
tween your hands.
e. Apply a fine lapping compound to the valve
face and repeat the above steps.
f. After every lapping procedure, be sure to
clean off all of the lapping compound from the
valve face and valve seat.
g. Apply Mechanic’s blueing dye (Dykem) “b”
onto the valve face.
h. Install the valve into the cylinder head.
i. Press the valve through the valve guide and
onto the valve seat to make a clear impres-
sion.
j. Measure the valve seat width “c” again. If the
valve seat width is out of specification, reface
and lap the valve seat.
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EAS24310
CHECKING THE VALVE SPRINGS
The following procedure applies to all of the
valve springs.
1. Measure:
• Valve spring free length “a”
Out of specification
→
Replace the valve
spring.
Содержание XV19CTMWC
Страница 2: ...SERVICE MANUAL XV19SW C XV19W C XV19MW C XV19CTSW C XV19CTW C XV19CTMW C LIT 11616 20 40 1D7 28197 11 ...
Страница 7: ......
Страница 9: ......
Страница 25: ...SPECIAL TOOLS 1 15 ...
Страница 47: ...TIGHTENING TORQUES 2 21 Cylinder head tightening sequence 3 1 2 4 A B 3 1 2 4 A Front cylinder B Rear cylinder ...
Страница 56: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 30 ...
Страница 61: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35 D D B B D D C C A A B C C B 3 2 1 3 4 6 7 6 7 5 ...
Страница 63: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37 A A A A 1 3 2 4 ...
Страница 64: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Oil pipe 1 2 Oil pump 3 Oil strainer crankcase 4 Joint pipe ...
Страница 65: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39 A 1 2 3 4 ...
Страница 67: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 A A A 1 5 5 1 3 2 4 B B B B ...
Страница 69: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 1 2 ...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Transfer gear oil pump 2 Middle driven shaft ...
Страница 79: ...CABLE ROUTING 2 53 ...
Страница 87: ...CABLE ROUTING 2 61 ...
Страница 90: ......
Страница 123: ...ELECTRICAL SYSTEM 3 33 a b 1 ...
Страница 126: ......
Страница 148: ...FRONT WHEEL 4 22 ...
Страница 185: ...HANDLEBAR 4 59 Throttle cable free play 4 0 6 0 mm 0 16 0 24 in ...
Страница 288: ...GENERATOR AND STARTER CLUTCH 5 76 Yamaha bond No 1215 90890 85505 Three Bond No 1215 ...
Страница 344: ......
Страница 350: ...IGNITION SYSTEM 7 6 ...
Страница 358: ...CHARGING SYSTEM 7 14 1 AC magneto 2 Rectifier regulator 4 Main fuse 6 Battery ...
Страница 360: ...CHARGING SYSTEM 7 16 ...
Страница 411: ...ELECTRICAL COMPONENTS 7 67 EAS27970 ELECTRICAL COMPONENTS 11 3 6 7 8 10 4 9 12 13 5 2 1 14 ...
Страница 413: ...ELECTRICAL COMPONENTS 7 69 16 18 2 11 13 9 8 10 12 14 15 17 1 3 4 5 6 7 ...
Страница 443: ......
Страница 444: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...