torque YAMAHA VX110 2005 User Guide

3-21
E
INSP
ADJ
POWER UNIT
5. Tighten:
Spark plug
NOTE:
Before installing the spark plug, clean the
gasket surface and spark plug surface. Also,
it is suggested to apply a thin film of anti-
seize compound to the spark plug threads to
prevent thread seizure.
If a torque wrench is not available, a good
estimate of the correct tightening torque for a
new spark plug is to finger tighten a
the
spark plug and then tighten it another 1/4 to
1/2 of a turnb
.
T R..
Spark plug:
13 N  m (1.3 kgf  m, 9.4 ft  lb)
6. Install:
Ignition coils
T R..
Ignition coil bolt:
7.6 N  m (0.76 kgf  m, 5.5 ft  lb)
LOCTITE 572
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5-51
EPOWRCAMSHAFTS
Install the exhaust and intake camshaft
caps.
NOTE:
Gradually tighten the intake and exhaust
camshaft cap bolts in 2–3 steps in the
sequence shown.
T R..
Camshaft cap bolt:
10 N  m (1.0 kgf  m, 7.2 ft  lb)
NOTE:
Make sure that the punch marks c
on the
camshafts are aligned with the arrow marks
d
on the camshaft caps.
Out of alignment →
Reinstall.
Remove the wire from the timing chain.
10 1 4 5 8
17 5 1 4 8 15 9 12 149 3 2
7 6
18 7 3 2 6
13 11 10 16
3. Install:
Timing chain tensioner
Installation steps:
While lightly pressing the timing chain
tensioner rod by hand, turn the tensioner
rod fully clockwise with a thin screwdriver
1
.
NOTE:
Make sure that the tensioner rod has been
fully set clockwise.
With the timing chain tensioner rod
turned all the way into the timing chain
tensioner housing (with the thin screw-
driver still installed), install the gasket and
the timing chain tensioner 2
onto the cyl-
inder block.
WARNING
Always use a new gasket.
Tighten the timing chain tensioner bolts
3
to the specified torque.
NOTE:
The “UP” mark on the timing chain ten-
sioner should face up.
33
2
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5-52
EPOWRCAMSHAFTS
T R..
Timing chain tensioner bolt:
10 N  m (1.0 kgf  m, 7.2 ft  lb)
Remove the screwdriver, make sure the
timing chain tensioner rod releases, and
then tighten the cap bolt to the specified
torque.
T R..
Cap bolt:
10 N  m (1.0 kgf  m, 7.2 ft  lb)
4. Turn:
Drive coupling
(several turns counterclockwise)
5. Check:
Turn the drive coupling counterclock-
wise, and then check if cylinder #1 is at
TDC of the compression stroke with a
dial gauge.
Camshaft punch marks a

Make sure that the camshaft punch
marks are aligned with the arrow marks
b
on the camshaft caps.
Out of alignment →
Adjust.
Refer to the installation steps above.
6. Measure:
Valve clearance
Out of specification →
Adjust.
Refer to “POWER UNIT” in Chapter 3.
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5-79
EPOWRCRANKCASE
CAUTION:
Do not use a torque wrench to tighten
the bolt to the specified angle.
Tighten the bolt until it is at the speci-
fied angle.
NOTE:
When using a hexagonal bolt, note that the
angle from one corner to another is 60°.
6. Tighten:
Crankcase bolts A
–J

NOTE:
Tighten the bolts in the order of the numbers
on the crankcase.
7. Tighten:
Oil pan bolts
NOTE:
Tighten the bolts in the order of the numbers
on the oil pan.
T R..
Crankcase bolt
A–
J:
12 N  m (1.2 kgf  m, 8.7 ft  lb)
LOCTITE 572
T R..
Oil pan bolt:
12 N  m (1.2 kgf  m, 8.7 ft  lb)
LOCTITE 572
15397
ICAEG
86240
HFBDJ
106
24812
15
11
7
3 1 5 9
13 14
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5-92
EPOWRCONNECTING RODS AND PISTONS
9. Tighten:
Connecting rod nuts
WARNING
Replace the connecting rod bolts and
nuts with new ones.
Clean the connecting rod bolts and nuts.
NOTE:
The tightening procedure of the connecting rod
nuts is angle controlled, therefore tighten the
nuts using the following procedure.
Tightening steps:
Tighten the connecting rod nuts to the
specified torque.
T R..
Connecting rod nut:
1st:
20 N  m (2.0 kgf  m, 14 ft  lb)
Tighten the connecting rod nuts further to
reach the specified angle 120°.
T R..
Connecting rod nut:
Final:
Specified angle 120
± 5°
WARNING
When the nuts are tightened more than
the specified angle, do not loosen the
nut and then retighten it.
Replace the bolt and nut with a new one
and perform the procedure again.
CAUTION:
Do not use a torque wrench to tighten
the nut to the specified angle.
Tighten the nut until it is at the speci-
fied angle.
NOTE:
When using a hexagonal nut, note that the
angle from one corner to another is 60°.
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