5-69
E
POWR
Cylinder head assembly removal
1. Remove:
• Cylinder head bolts (M6
× 55 mm) 1
• Cylinder head bolts (M12
× 140 mm) 2
NOTE:
Loosen the cylinder head bolts 2 in the
sequence shown.
1 95
73
4
0
8
26
22
2
222
1
Valve removal
1. Remove:
• Valve lifter 1
• Valve pad 2
NOTE:
Make a note of the position of each valve lifter
1 and valve pad 2 so that they can be
installed in their original positions.
1
2
2. Remove:
• Valve cotters 1
• Upper spring seat 2
• Valve spring 3
• Lower spring seat 4
• Valve 5
• Valve seal 6
NOTE:
Make a note of the position of each valve,
spring, and other part so that they can be
installed in their original positions.
Valve spring compressor 7:
YM-04019/90890-04019
Compressor adapter 8:
YM-04114
Valve spring compressor attachment
8:
90890-04114
8
7
5
6
4
3
2
1
Cylinder head check
1. Check:
• Cylinder head
Damage/eroded → Replace the cylinder
head.
• Cylinder head water jacket
Mineral deposits/rust → Eliminate
deposits or rust.
Cylinder head
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