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2. Disassembly, Inspection and Reassembly of Engine Main Parts
★ Cautions before start
1) Check the cylinder block and cylinder head for wear, leakage and damage.
2) Remove deposit in oil holes of each part with air and check for clogging.
3) Wash each part well to remove dust, contaminated oil, carbon, and other foreign matter.
4) Remove carbon deposite on the piston, cylinder head, valves, etc. carefully not to damage parts. (Great care is
necessary specifically for aluminum alloy parts.)
5) Valves, pistons, connecting rods, metals and other parts which are to be combined as specified should be
attached match marks beforehand to prevent confusion.
1) Rocker arm ass’y
Disassembly
(1) Extract the screw from the rocker arm bracket.
(2) Screw in a M8 bolt from the front side of the rocker
arm bracket and extract the rocker arm shaft.
(3) Take out the spring and rocker arm from the rocker
arm bracket.
1. Screw
2. Rocker arm shaft
3. Rocker arm
4. Spring
5. Shim
Inspection and service
(1) Rocker arm shaft
Measure the outside diameter of the rocker arm shaft
with a micrometer and replace if the result is bellow
the service limit.
Rocker arm shaft diameter (ø)
Standard assembling value Service limit
J843 11.65 – 11.67 11.57
N843L 14.95 – 14.97 14.87
009X
010X
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