Mercury F5RZ-6K318-A Crankshaft Oil Seal Retainer

The timing belt needs to be removed, the crankshaft sprocket should be pulled off, though a two jaw puller might be necessary if it is on very tight. After that, remove the dished washer from the crankshaft but the best side of it should be placed against the oil seal. With a suitable hooked tool, prise out the oil seal from the oil pump housing. Coat the lips of the new seal in oil and then fit it in place around the pulley bolt the large washer and a piece of pipe as space washer. Next, set the dished washer in such a manner that the concave side is in contact with the oil seal, then the belt sprocket is placed over the crankshaft and followed by the pulley. Last, but not the least, set the car timing belt as hitherto elucidated should do the trick.

Lightly coat the inside lip of the new seal with clean engine oil. Then, use a thin (but durable) two-inch wide plastic strip or a two-liter plastic beverage bottle cut to size around the inside circumference of the seal to act as a liner for installation.

Remove the timing belt pulley and guide from the crankshaft.