Mercury FourStroke 2.5 Service Manual page 118

3. Install the valve lifters and push rods.
c
4. Install the spring seat, spring, and valve spring retainer.
5. Use a suitable box end wrench to compress the valve spring to install the valve keepers.
NOTE: Hold the valves in place from the cylinder bore end during the assembly procedure.
a
b
c
d
e
6. Install the guide plate and pivot bolts.
7. Install the rocker arms and rocker arm pivots.
8. Install the rocker arm nuts.
90-8M0065421 NOVEMBER 2012
a
b
a - Keepers
b - Retainer
c - Spring
d - Seat
e - Seal
42589
a - Pivot bolt
b - Nut
a
c - Pivot
d - Rocker arm
b
e - Guide plate
c
d
e
26674
a - Intake valve
b - Exhaust valve
c - Valve lifter and push rod
26716
Powerhead
Page 4A-37