Engine Maintenance 9-30
10. Place the engine at top dead center of the compression stroke for the number four cylinder.
a. Rotate the engine again in the normal direction of rotation until the 1-4 timing mark on the flywheel lines up with the index
mark in the access hole.
b.Check the rocker arms on the number four cylinder.
c. If the rocker arms are loose, the engine is at top dead center of the compression stroke for the number four cylinder.
d.If the rocker arms are tight, the engine is at top dead center of the exhaust stroke for the number four cylinder. Rotate the
engine 360 degrees to place the engine at top dead center of the compression stroke for the number four cylinder.
11. Check and adjust both valves for the number four cylinder.
12. Place the engine at top dead center of the compression stroke for the number two cylinder.
a. Rotate the engine again in the normal direction of rotation until the 2-3 timing mark on the flywheel lines up with the index
mark in the access hole.
b.Check the rocker arms on the number two cylinder.
c. If the rocker arms are loose, the engine is at top dead center of the compression stroke for the number two cylinder.
d.If the rocker arms are tight, the engine is at top dead center of the exhaust stroke for the number two cylinder. Rotate the
engine 360 degrees to place the engine at top dead center of the compression stroke for the number two cylinder.
13. Check and adjust both valves for the number two cylinder.
14. Replace the rocker arm cover and the timing mark access hole cover. Tighten the fuel injection lines when finished.
Valve Adjustments – All Engines
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