Yamaha F75F - Page 300

PTT cylinder
9-40
Disassembling the trim cylinder
1. Loosen:
• Trim cylinder end screw “1”
2. Drain:
• PTT fluid
Disassembling the tilt cylinder
1. Loosen:
• Tilt cylinder end screw “1”
When loosening the tilt cylinder end screw,
be careful not to damage the check valve
“3”.
Disassembling the trim and tilt ram
assembly
1. Remove:
• Tilt piston “1”
Checking the PTT cylinder and piston
1. Check:
• PTT body
Corroded/cracked  Replace.
• Inner surface
of the PTT body
Scratched  Replace.
2. Check:
• Outer
surface of the tilt piston
• Outer
surface of the free piston
Scratched  Replace.
3. Check:
• Trim and ti
lt ram
Rust  Clean using 400–60
0-grit sandpa-
per.
Bent/corroded  Replace.
4. Check:
• Check valve of the tilt cylinder end screw
Dirt/residue  Clean.
Checking the absorber valve
1. Check:
• Absorber val
ve
Dirt/residue  Clean.
Cylinder end screw wrench “2”
90890-06591
Cylinder end screw wrench “2”
90890-06591
1
2
1
2
3
Tilt rod wrench “2”
90890-06569
PTT piston vice attachment “3”
90890-06572
1
2
3