5-23
VALVES AND VALVE SPRINGS
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:
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 steps above.
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 again. If the
valve seat width is out of specification,
reface and lap the valve seat.
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EAS00241
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.
Valve spring free length
Intake
40.38 mm (1.59 in)
<Limit>: 38.36 mm (1.51 in)
Exhaust
40.38 mm (1.59 in)
<Limit>: 38.36 mm (1.51 in)
Summary of Contents for 2008 Tenere
Page 1: ...SERVICE MANUAL 2008 11D F8197 E0 XT660Z ...
Page 8: ......
Page 24: ......
Page 44: ...2 20 TIGHTENING TORQUES Cylinder head tightening sequence 2 4 3 1 ...
Page 54: ...2 30 COOLING SYSTEM DIAGRAMS 1 2 3 4 5 6 7 9 10 11 12 5 8 11 A ...
Page 57: ...2 33 LUBRICATION DIAGRAMS LUBRICATION DIAGRAMS 1 A A A A B B B A A B 3 2 2 4 1 1 5 5 ...
Page 59: ...2 35 LUBRICATION DIAGRAMS A A A A 3 1 2 3 4 ...
Page 60: ...2 36 LUBRICATION DIAGRAMS 1 Oil delivery pipe 2 2 Oil delivery pipe 1 3 Oil filter 4 Oil pump ...
Page 61: ...2 37 LUBRICATION DIAGRAMS 1 7 2 3 4 5 6 A ...
Page 63: ...2 39 LUBRICATION DIAGRAMS 1 6 5 4 3 2 ...
Page 65: ...2 41 CABLE ROUTING CABLE ROUTING ...
Page 67: ...2 43 CABLE ROUTING ...
Page 69: ...2 45 CABLE ROUTING ...
Page 71: ...2 47 CABLE ROUTING ...
Page 73: ...2 49 CABLE ROUTING ...
Page 75: ...2 51 CABLE ROUTING ...
Page 77: ...2 53 CABLE ROUTING ...
Page 79: ...2 55 CABLE ROUTING ...
Page 81: ...2 57 CABLE ROUTING ...
Page 83: ...2 59 CABLE ROUTING ...
Page 176: ...4 56 FRONT FORK WARNING Make sure the brake hoses are routed prop erly 1 2 3 ...
Page 270: ......
Page 284: ......
Page 301: ...7 17 FUEL INJECTION SYSTEM WIRING DIAGRAM ...
Page 324: ......
Page 327: ...8 1 IGNITION SYSTEM EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM ...
Page 331: ...8 5 ELECTRIC STARTING SYSTEM EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM ...
Page 337: ...8 11 CHARGING SYSTEM EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM ...
Page 338: ...8 12 CHARGING SYSTEM 2 A C magneto 5 Rectifier regulator 7 Battery 8 Main fuse ...
Page 340: ...8 14 CHARGING SYSTEM ...
Page 341: ...8 15 LIGHTING SYSTEM EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM ...
Page 345: ...8 19 SIGNALING SYSTEM EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM ...
Page 351: ...8 25 COOLING SYSTEM EAS00807 COOLING SYSTEM CIRCUIT DIAGRAM ...
Page 354: ...8 28 COOLING SYSTEM ...
Page 355: ...8 29 IMMOBILIZER SYSTEM ET5YU1002 IMMOBILIZER SYSTEM ET5YU1003 CIRCUIT DIAGRAM ...
Page 364: ...8 38 IMMOBILIZER SYSTEM ...
Page 365: ...8 39 ELECTRICAL COMPONENTS EAS27970 ELECTRICAL COMPONENTS ...
Page 367: ...8 41 ELECTRICAL COMPONENTS ...
Page 369: ...8 43 ELECTRICAL COMPONENTS EAS27980 CHECKING THE SWITCHES ...
Page 388: ......
Page 390: ......
Page 396: ...COLOR CODE ...
Page 397: ......
Page 398: ...YAMAHA MOTOR ITALIA S P A ...
Page 399: ...XT660Z 2008 WIRING DIAGRAM ...