Yamaha MT-09 2021, Service Manual

Page: 246 / 752

5-19
CAMSHAFTS
EAS30256
REMOVING THE CAMSHAFTS
1. Remove:
• Timing mark accessing bolt “1”
• Crankshaft end cover “2”
2. Align:
• Mark “a” on the generator rotor
(with the generator rotor cover mark “b”)
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at BTDC125
°
on the
compression stroke, align the BTDC125
°
mark “a” on the generator rotor with the
generator rotor cover mark “b”.
TIP
BTDC125
°
on the compression stroke can be
found when the camshaft lobes are turned away
from each other.
3. Remove:
• Timing chain tensioner “1”
• Timing chain tensioner gasket
4. Remove:
• Camshaft cap
• Intake camshaft cap
• Exhaust camshaft cap
NOTICE
ECA13720
To prevent damage to the cylinder head,
camshafts or camshaft caps, loosen the
camshaft cap bolts in stages and in a criss-
cross pattern, working from the outside in.
5. Remove:
• Intake camshaft “1”
• Exhaust camshaft “2”
TIP
To prevent the timing chain from falling into the
crankcase, fasten it with a wire “3”.
6. Remove:
• Camshaft sprocket “1”
TIP
Use the camshaft wrench “2” and loosen the
camshaft sprocket bolt.
1
2
a
b
1
Camshaft wrench
90890-04162
Camshaft wrench
YM-04162
1
2
3