2012 Na Yamaha Super Tenere Manual

haha CYLINDER HEAD
5-26
EAS24120
REMOVING THE CYLINDER HEAD
1. Remove: Cylinder head bolts
TIP
Loosen the bolts in the proper sequence as 
shown.
 Loosen each bolt 1/2 of a turn at a time. After 
all of the bolts are fully loosened, remove them.
M6  × 125 mm:  “1”, “2”
 M12 ×  185 mm:  “3”–“8”
EAS23P1107
CHECKING THE TIMING CHAIN GUIDE 
(EXHAUST SIDE)
1. Check: Timing chain guide (exhaust side)
Damage/wear Replace.
EAS24170
CHECKING THE CYLINDER HEAD
1. Eliminate: Combustion chamber carbon...

haha CYLINDER HEAD
5-27
WARNING
EWA23P1013
Replace the bolts with new ones.
TIP
Tighten the bolts using the following procedure.
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a. Lubricate the cylinder head bolts with engine 
oil.
b. Install the cylinder head bolts.
c. Tighten the cylinder head bolts in the proper 
tightening sequence as shown.
d. Tighten the cylinder head bolts, and then  tighten them further to reach the specified an-
gle in the proper tightening sequence as 
shown.
TIP
 Tighten each...

haha VALVES AND VALVE SPRINGS
5-28
EAS24270
VALVES AND VALVE SPRINGS Removing the valves and valve springs
Order Job/Parts to remove Q ’ty Remarks
Cylinder head Refer to “CYLINDER HEAD ” on page 5-25.
1 Valve lifter 8
2 Valve pad 8
3 Valve cotter 16
4 Valve spring retainer 8
5 Valve spring 8
6 Exhaust valve 4
7 Intake valve 4
8 Valve stem seal 8
9 Valve spring seat 8
10 Valve guide 8
For installation, reverse the removal proce-
dure.
New
New
New
New
E
E
M
M
M
M
M
M
M
M
8
9
8
10
9
5
12
3
4
10
6 7
2
34
1...

haha VALVES AND VALVE SPRINGS
5-29
EAS24280
REMOVING THE VALVES
The following procedure applies to all of the 
valves and related components.
TIP
Before removing the internal parts of the cylinder 
head (e.g., valves, valve springs, valve seats), 
make sure the valves properly seal.
1. Remove: Valve lifter “1”
 Valve pad  “2”
TIP
Make a note of the position of each valve lifter 
and valve pad so that they can be reinstalled in 
their original place.
2. Check:
Valve sealing
Leakage at the valve seat...

haha VALVES AND VALVE SPRINGS
5-30
1. Measure: Valve-stem-to-valve-guide clearance
Out of specification   Replace the valve 
guide.
2. Replace: Valve guide
TIP
To ease valve guide removal and installation, 
and to maintain the correct fit, heat the cylinder 
head to 100  °C (212  °F) in an oven.
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a. Remove the valve guide with the valve guide 
remover “1”. b. Install the new valve guide with the valve 
guide installer  “2” and valve guide remover 
“1”.
c....

haha VALVES AND VALVE SPRINGS
5-31
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3. Eliminate: Carbon deposits
(from the valve face and valve seat)
4. Check: Valve face
Pitting/wear   Grind the valve face.
 Valve stem end
Mushroom shape or diameter larger than the 
body of the valve stem   Replace the valve.
5. Measure: Valve margin thickness D  “a”
Out of specification   Replace the valve.
6. Measure: Valve stem runout
Out of specification   Replace the valve.
TIP
When installing a new valve,...

haha VALVES AND VALVE SPRINGS
5-32
b. Install the valve into the cylinder head.
c. Press the valve through the valve guide and  onto the valve seat to make a clear impres-
sion.
d. Measure the valve seat width.
TIP
Where the valve seat and valve face contacted 
one another, the blueing will have been re-
moved.
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4. Lap: Valve face
 Valve seat
TIP
After replacing the cylinder head or replacing the 
valve and valve guide, the valve seat and valve 
face should...

haha VALVES AND VALVE SPRINGS
5-33
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.
2. Measure: Compressed valve spring force  “a”
Out of specification   Replace the valve 
spring. 3. Measure:
Valve spring tilt  “a”
Out of specification   Replace the valve 
spring.
EAS24320
CHECKING THE VALVE LIFTERS
The following procedure applies to all of the 
valve lifters....

haha VALVES AND VALVE SPRINGS
5-34
2. Lubricate: Valve stem “1”
 Valve stem end
 Valve stem seal  “2”
(with the recommended lubricant)
3. Install: Valve spring seat “1”
(into the cylinder head)
 Valve stem seal  “2” 
 Valve  “3”
 Valve spring “4”
 Valve spring retainer “5”
TIP
Make sure each valve is installed in its original 
place.
 Install the valve springs with the larger pitch  “a” 
facing up. 4. Install:
Valve cotters
TIP
Install the valve cotters by compressing the 
valve spring with...

haha VALVES AND VALVE SPRINGS
5-35
6. Lubricate: Valve pad
(with the recommended lubricant)
 Valve lifter
(with the recommended lubricant)
7. Install: Valve pad
 Valve lifter
TIP
The valve lifter must move smoothly when ro-
tated with a finger.
 Each valve lifter and valve pad must be rein-
stalled in their original position.
  Recommended lubricant
Molybdenum disulfide oil
  Recommended lubricant
Engine oil