Mercury 25 EFI Service Manual page 397

1. Install a new O‑ring and seal in the outer trim cylinder tube.
b
2. Install two new O‑rings in the base of the power trim assembly.
3. Lightly lubricate the inside of the inner cylinder tube.
IMPORTANT: The trim piston assembly and the memory piston must be installed into the end of the inner cylinder tube
with the inside diameter chamfer.
4. Install a new lubricated O‑ring on the trim piston.
90-8M0105568 eng MARCH 2016
a - Rod seal and O‑ring
b - Outer trim cylinder tube
a
18253
a
b
18251
a
b
© 2016 Mercury Marine
Power Trim
a - O‑rings
b - Power trim assembly base
a - Inner cylinder tube
b - Chamfer on inside
diameter
18288
Page 5B-35