Mitsubishi 4G1 Service Manual page 507

Front Case, Silent Shaft and Oil Pan
(2) Install the front case assembly through a new front case
gasket and temporarily tighten the flange bolts (other than
those for tightening the filter bracket).
FLANGE BOLT INSTALLATION
(1) Insert a Phillips screwdriver into a hole in the left side of the
cylinder block to lock the silent shaft.
(2) Secure the oil pump driven gear onto the left silent shaft by
tightening the flange bolt to specified torque.
(2) Using the special tool, install the plug and tighten to
specified torque.
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