Yamaha MT-09 2021 Service Manual page 250

TIP
• Make sure each camshaft cap is installed in its
original place. Refer to the identification marks
as follows:
"IL": Intake left side camshaft cap mark
"EL": Exhaust left side camshaft cap mark
• Make sure the arrow mark "a" on each cam-
shaft points toward the right side of the engine.
6. Tighten:
• Camshaft cap bolt "1"
Camshaft cap bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
TIP
Tighten the camshaft cap bolts in the tightening
sequence as shown.
ECA17430
NOTICE
• Lubricate the camshaft cap bolts with the
engine oil.
• The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft caps, and camshafts will result.
• Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
8
5
2 3
4 1
7
6
7. Tighten:
• Camshaft cap bolt "1"
Camshaft cap bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
a
IL
EL
a
5-23
TIP
Tighten the camshaft cap bolts in stage and in a
crisscross pattern, working from the inner caps
out.
ECA17430
NOTICE
• Lubricate the camshaft cap bolts with the
engine oil.
• The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft caps, and camshafts will result.
• Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
8. Check:
• Camshaft punch mark "a"
Make sure the camshaft punch mark "a" on
the camshaft is aligned with the camshaft cap
alignment mark "b".
b
a
9. Install:
• Timing chain tensioner gasket
• Timing chain tensioner
a. Using the valve spring compressor "1",
push and insert timing chain tensioner rod
"2" into the timing chain tensioner housing.
TIP
Push the timing chain tensioner rod in direction
"a", and turn the timing chain tensioner body "3"
in direction "b" until the circlip fits into the groove.
CAMSHAFTS
1
1
b
a
New