898101901 Mercruiser SPROCKET

Illustration 1 g00582943Note: The rocker arms are different on the Type 1 Engines and the Type 2 Engines. Type 1 Engines have an anvil for the seat of the rocker arm. Type 2 Engines have a floating button for the seat of the rocker arm. (1) Rocker arm Seat ... AnvilBore in rocker arm for shaft ... 24.808 0.200 mm (0.9767 0.0079 inch) (2) Rocker arm shaft Diameter of new shaft ... 24.755 0.010 mm (0.9746 0.0004 inch) (3) Locknut Tighten the locknut to the following torque. ... 25 7 N m (18 5 lb ft) (4) Valve lash Inlet valve ... 0.38 mm (0.015 inch)Exhaust valve ... 0.64 mm (0.025 inch) (5) Rocker arm support Height of the rocker arm support ... 70.60 mm (2.779 inch) (6) Push rod for valve Length of the push rod for the valve ... 231 mm (9.1 inch)Note: The length of the push rod (6) for the valve is a total length. This length is measured from the top of the concave end to the bottom of the ball end. The dimension was measured with a scale. The dimension is only a reference dimension. (7) Lifter arm Bore in lifter arm ... 15.670 0.012 mm (0.6169 0.0005 inch) (8) Shaft for lifter arm Diameter of a new shaft for the lifter arm ... 15.620 0.018 mm (0.6150 0.0007 inch) (9) Bolts for shaft of lifter arm Tighten the bolts for the shaft of the lifter arm to the following torque. ... 13 3 N m (9 2 lb ft)
Illustration 2 g00616871
View A-A
Typical example
(10) Position of the holes in the lifter shaft (11) Apply 9S-3263 Thread Lock Compound. Tighten the bolts that are shown above in a numerical sequence to the following torque. ... 13 3 N m (10 2 lb ft)Type 2 (3114 and 3116 Engines)
Illustration 3 g00582969Note: The rocker arms are different on the Type 1 Engines and the Type 2 Engines. Type 1 Engines have an anvil for the seat of the rocker arm. Type 2 Engines have a floating button for the seat of the rocker arm. (1) Rocker arm Seat ... Floating buttonBore in rocker arm for shaft ... 24.808 0.200 mm (0.9767 0.0079 inch) (2) Rocker arm shaft Diameter of new shaft ... 24.755 0.010 mm (0.9746 0.0004 inch) (3) Locknut Tighten the locknut to the following torque. ... 25 7 N m (18 5 lb ft) (4) Valve lash Inlet valve ... 0.38 mm (0.015 inch)Exhaust valve ... 0.64 mm (0.025 inch) (5) Rocker arm support Height of the rocker arm support ... 70.60 mm (2.779 inch) (6) Push rod for valve Length of the push rod for the valve ... 228 mm (9 inch)Note: The length of the push rod (6) for the valve is a total length. This length is measured from the top of the concave end to the bottom of the ball end. The dimension was measured with a scale. The dimension is only a reference dimension. (7) Lifter arm Bore in lifter arm ... 15.670 0.012 mm (0.6169 0.0005 inch) (8) Shaft for lifter arm Diameter of a new shaft for the lifter arm ... 15.620 0.018 mm (0.6150 0.0007 inch) (9) Bolts for shaft of lifter arm Tighten the bolts for the shaft of the lifter arm to the following torque. ... 13 3 N m (9 2 lb ft)
Illustration 4 g00616871
View A-A
Typical example
(10) Position of the holes in the lifter shaft (11) Apply 9S-3263 Thread Lock Compound. Tighten the bolts that are shown above in a numerical sequence to the following torque. ... 13 3 N m (10 2 lb ft)Type 3 (3126 Engines)
Illustration 5 g00582969 (1) Rocker arm Seat ... Floating buttonBore in rocker arm for shaft ... 24.808 0.200 mm (0.9767 0.0079 inch) (2) Rocker arm shaft Diameter of new shaft ... 24.755 0.010 mm (0.9746 0.0004 inch) (3) Locknut Tighten the locknut to the following torque. ... 25 7 N m (18 5 lb ft) (4) Valve lash Inlet valve ... 0.38 mm (0.015 inch)Exhaust valve ... 0.64 mm (0.025 inch) (5) Rocker arm support Height of the rocker arm support ... 77.20 mm (3.04 inch) (6) Push rod for valve Length of the push rod for the valve ... 235 mm (9.25 inch)Note: The length of the push rod (6) for the valve is a total length. This length is measured from the top of the concave end to the bottom of the ball end. The dimension was measured with a scale. The dimension is only a reference dimension. (7) Lifter arm Bore in lifter arm ... 15.670 0.012 mm (0.6169 0.0005 inch) (8) Shaft for lifter arm Diameter of a new shaft for the lifter arm ... 15.620 0.018 mm (0.6150 0.0007 inch) (9) Bolts for shaft of lifter arm Tighten the bolts for the shaft of the lifter arm to the following torque. ... 13 3 N m (9 2 lb ft)
Illustration 6 g00616871
View A-A
Typical example
(10) Position of the holes in the lifter shaft (11) Apply 9S-3263 Thread Lock Compound. Tighten the bolts that are shown above in a numerical sequence to the following torque. ... 13 3 N m (10 2 lb ft)