Mercury 25 EFI Service Manual page 231

4. Install the ECM mounting bracket to the intake manifold. Secure the ECM mounting bracket to the intake manifold with
three bolts and washers. Tighten the bolts to the specified toque.
a
Description
Bolts securing the ECM mounting bracket (3)
5. Install 6 (three per side) O‑ring seals onto the intake manifold insulator.
6. Install the intake manifold insulator onto the cylinder head intake manifold mounting studs.
7. Install the intake manifold onto the cylinder head intake manifold mounting studs.
8. Secure the intake manifold to the cylinder head with three washers and nuts. Do not tighten the nuts at this time.
9. Secure the intake manifold to the cylinder head and cylinder block with six bolts.
10. Tighten the 6 bolts and three nuts in sequence to the specified torque.
5
3
1
2
4
6
Description
Nuts and bolts securing the intake manifold ( 6 bolts, three nuts,)
11. Install the fuel rail. Refer to Section 3C ‑ Fuel Rail.
12. Install the IAC. Refer to Section 3C ‑ Idle Air Control (IAC).
90-8M0105568 eng MARCH 2016
a - Bolts securing the ECM mounting bracket (3)
11168
© 2016 Mercury Marine
Service Procedures
Nm lb. in. lb. ft.
6 53
11187
9
7
8
11469
Nm lb. in. lb. ft.
9 80
Page 3C-47