Installing The Valve Lifters - Yamaha XV19SW Service Manual

ECA14650
CAUTION:
Be sure to install the valve lifter in its appro-
priate position.
c. Start the engine and warm it up.
d. Stop the engine.
e. Remove the camshaft sprocket cover.
f. Rotate the camshaft until the punch mark "1"
on the camshaft driven gear aligns with the
punch mark on the camshaft drive gear as
shown. This is the condition in which piston
#1 is at top dead center (TDC).
NOTE:
The crankshaft can be rotated smoothly when
the spark plugs are removed.
EWA12880
WARNING
Be careful since the engine is hot.
g. With piston #1 at TDC, count the indicated
number of gear teeth and place marks "2"
through "5" on the camshaft driven gear as
shown. When these marks align between the
centers of the camshaft drive and driven
gears, the corresponding valve lifter is at its
highest point.
18 17
19 16
19
18
17
4
16
15
14
13
3
12
11
10
2
9
8
7
6
5 2 1
4 3
1. Piston #1 TDC punch mark
2. Cylinder #2 intake valve at its highest point
3. Cylinder #1 exhaust valve at its highest point
4. Cylinder #1 intake valve at its highest point
5. Cylinder #2 exhaust valve at its highest point
15
14
13
12
11
10
9
8
7
5
6
5
1
4
3
2
1
5-30
h. Rotate the crankshaft until the mark (on the
camshaft driven gear) for the valve lifter to be
bled aligns with the camshaft drive gear as
shown.
Example:
For bleeding the cylinder #2 intake valve lift-
er, align mark "2" as shown.
1. Piston #1 TDC punch mark
2. Cylinder #2 intake valve at its highest point
i. Leave the camshaft drive and driven gears
aligned for five minutes to allow the valve lift-
er to bleed.
j. If necessary, repeat steps (h) and (i) to bleed
other valve lifters.
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EAS24060

INSTALLING THE VALVE LIFTERS

1. Install:
• Front valve lifter case
• Rear valve lifter case
• Valve lifters
Valve lifter case bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
®
LOCTITE
NOTE:
• Install the valve lifter in the correct place.
• After installing the valve lifters, fill the tops of
them with engine oil.
CAMSHAFTS
1
2
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