Mercury 25 EFI Service Manual page 281

Ref. No. Qty.
1 3 Intake valve
2 3 Exhaust valve
3 3 Intake valve stem seal (black)
4 3 Exhaust valve stem seal (green)
5 6 Seat
6 6 Spring
7 6 Retainer
8 12 Keeper
9 6 Rocker arm
10 6 Adjusting screw
11 6 Nut
12 1 Rocker arm shaft (intake)
13 1 Rocker arm shaft (exhaust)
14 2 Bolt
15 3 Spring
16 6 Washer
17 1 Spacer
18 3 Spring
90-8M0105568 eng MARCH 2016
Intake and Exhaust Valve Components
Description
© 2016 Mercury Marine
Cylinder Head
Torque
Nm lb. in. lb. ft.
7 62
9 80
Page 4B-9