Removing The Camshaft - Yamaha YZ 2017 Series Owner's Service Manual

REMOVING THE CAMSHAFT

EASB29B211
1. Remove:
• Timing mark accessing screw "1"
• Crankshaft end accessing screw "2"
2. Align:
• Alignment mark
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a. Turn the crankshaft counterclockwise with a
wrench.
b. Align the top dead center (TDC) mark "a" on
the rotor with the alignment mark "b" on the
crankcase cover.
TIP
Align the alignment mark "c" on the exhaust
camshaft sprocket and the alignment mark "d"
on the intake camshaft sprocket with the edge
of the cylinder head.
d
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3. Remove:
• Timing chain tensioner cap bolt "1"
• Timing chain tensioner "2"
• Gaskets
4. Remove:
1
2
TIP
• Remove the bolts (camshaft cap) in a criss-
• In order to prevent the clip from falling into the
ECA
NOTICE
The bolts (camshaft cap) must be removed
evenly to prevent damage to the cylinder
head, camshafts or camshaft caps.
b
a
c
5. Remove:
TIP
Attach a wire "3" to the timing chain to prevent
it from falling into the crankcase.
5-14
• Bolt (camshaft cap) "1"
• Camshaft cap "2"
• Clip "3"
cross pattern, working from the outside in.
crankcase, remove the camshaft cap.
2
3
• Exhaust camshaft "1"
• Intake camshaft "2"
CAMSHAFT
2
1
1