Cylinder Head Assembly Removal; Valve Removal; Cylinder Head Check - Yamaha WaveRunner FX SHO Service Manual

POWR
2
1 5
1
2 6
2
1
2
8
7
Cylinder head
2 2
9 8 4
0 7 3
2 2
1
2
3
4
6
5

Cylinder head assembly removal

1. Remove:
• Cylinder head bolts (M6
• Cylinder head bolts (M12
NOTE:
Loosen the cylinder head bolts 2 in the
sequence shown.

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.
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

Cylinder head check

1. Check:
• Cylinder head
Damage/eroded → Replace the cylinder
head.
• Cylinder head water jacket
Mineral
deposits or rust.
5-69
×
55 mm) 1
×
140 mm) 2
→
deposits/rust
E
Eliminate