Mercury 225 EFI, Service Manual

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POWERHEAD
90-884294 OCTOBER 2001 Page 4A-59
10. Install oil seal into upper bearing carrier as follows:
a. Apply a light film of 2-4-C Marine Lubricant with Teflon to outer diameter of upper end
cap oil seal. This will ease seal installation into carrier.
b. Lubricate oil seal lip with 2-4-C Marine Lubricant with Teflon.
c. Use a suitable mandrel, press oil seal into bearing carrier (lip facing down) until bot-
tomed out on shoulder of carrier.
d. Lubricate O-ring seal surface on end cap with 2-4-C Marine Lubricant with Teflon
and install on carrier.
95 2-4-C With Teflon
95
51473
c
b
95
a
a - Oil Seal
b - Bearing Carrier
c - O-ring
Crankshaft Installation
SPECIAL INFORMATION
Installing A New Crankshaft Assembly Into Cylinder Block
Check the crankshaft sealing ring mating surfaces in the cylinder block and crankcase cover
for wear grooves that were caused by the crankshaft sealing rings from the previous crank-
shaft. If wear grooves are present, the sealing rings on the new crankshaft will have to fit
into the grooves without binding the crankshaft.
Before installing crankshaft, remove any burrs that may exist on groove edges.
Lubricate sealing rings with light oil and install new crankshaft as instructed.
Install upper and lower end caps and then inspect fit between sealing rings and grooves.
Temporarily install crankcase cover and rotate crankshaft several times to check if sealing
rings are binding against crankshaft. (You will feel a drag on the crankshaft.) If sealing rings
are binding, recheck grooves for burrs. If this does not correct the problem, it is recom-
mended that the cylinder block be replaced.