Mercury 40 Service Manual page 237

Rocker Arm Shaft Assembly
1. Apply engine oil to the rocker shaft and arms.
2. Locate the end of the rocker shaft that gets installed towards driven gear (oil holes will
line-up with the mating oil holes in the cylinder head).
3. Slide the rocker arms onto rocker shaft as shown.
a -
b -
Rocker Arm Shaft Installation
1. Install the rocker arm shaft assembly as shown. Tighten bolts to the specified torque.
NOTE: Leave all adjustment screws loose at this time.
c
b
a
b
c
a -
b -
c -
d -
90-828631R3 MARCH 1999
a
Rocker Shaft
Rocker Arms
Rocker Arm Retainer (1)
Rocker Arm Retainer (2) Arrow Must Point Towards Driven Gear
Rocker Arm Retainer (2)
Mounting Bolts (5)
Rocker Arm Shaft Mounting Bolt Torque
160 lb-in. (18 Nm)
b
53739
d
53740
CYLINDER HEAD
Page 4A-41