Mercury MerCruiser Service Manual page 244

Engine Inspection and Assembly
IMPORTANT: The oil pan alignment must always be flush or forward no more than 0.3 mm (0.011 in.) from the rear face of
the engine block.
4. Using four guide pins in the front and rear corner holes, install the oil pan onto the engine block. Press the oil pan gasket
into the grooves of the engine front cover and crankshaft rear oil seal housing.
b
Oil Pan Guide Pins
5. Install the oil pan screws, but do not tighten.
6. Measure the pan‑to‑transmission housing clearance using a feeler gauge and a straightedge. Use a feeler gauge to check
the clearance between the oil pan‑to‑housing measurement points. If the clearance exceeds 0.3 mm (0.011 in.) at any of
the three oil pan‑to‑housing measurement points, then repeat the step until the oil pan‑to‑housing clearance is within the
specification. The oil pan must always be forward of the rear face of the engine block.
NOTE: If the clearance is more than 0.3 mm (0.011 in.), powertrain durability may be reduced.
Page 3B-42
a
© 2016 Mercury Marine
a - Gasket
b - Groove in the oil pan
b
59552
a
b b
59553
Obtain locally
90-8M0099748 eng DECEMBER 2015
a - Oil pan
b - Guide pins (2)