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Mercury 40 Service Manual

Mercury 40
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CYLINDER HEAD
90-828631R3 MARCH 1999 Page 4A-41
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.
53739
a
b
a-Rocker Shaft
b-Rocker Arms
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.
53740
c
b
a
b
c
d
a-Rocker Arm Retainer (1)
b-Rocker Arm Retainer (2) Arrow Must Point Towards Driven Gear
c-Rocker Arm Retainer (2)
d-Mounting Bolts (5)
Rocker Arm Shaft Mounting Bolt Torque
160 lb-in. (18 Nm)

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Mercury 40 Specifications

General IconGeneral
Horsepower40 hp
Starting SystemElectric
SteeringRemote
Fuel Induction SystemEFI (Electronic Fuel Injection)
Shaft Length20"
Full Throttle RPM Range6000

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