Crankshaft Installation - Mercury 200 OptiMax Jet Drive Service Manual

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Tube Ref No.
2-4-C with Teflon
95
2-cycle Premium
14
Outboard Oil

Crankshaft Installation

Before Installing a New Crankshaft
1.
Check the crankshaft sealing ring mating surfaces in the cylinder block and crankcase cover for wear grooves caused by the
crankshaft sealing rings from the previous crankshaft.
NOTE: If wear grooves are present, the sealing rings on the new crankshaft will have to fit into the grooves without binding
the crankshaft.
2.
Before installing the crankshaft, remove any burrs that may exist on the groove edges.
3.
Lubricate the sealing rings with 2‑Cycle Premium Outboard Oil and install the new crankshaft as instructed.
Tube Ref No.
2-cycle Premium
14
Outboard Oil
4.
Install the upper and lower end caps and inspect the fit between the sealing rings and grooves.
5.
Temporarily install the crankcase cover and rotate the crankshaft several times to check if the sealing rings are binding against
the crankshaft.
NOTE: You will feel a drag on the crankshaft.
6.
If the sealing rings are binding, recheck the grooves for burrs. If this does not correct the problem, replace the cylinder block.
Installing the New Crankshaft
1.
Lubricate the crankshaft sealing rings with 2‑Cycle Premium Outboard Oil.
2.
Check the cylinder block to ensure that the center pins are in place.
3.
Position all crankshaft seal ring gaps straight up.
4.
Align the hole in each center main bearing race with a center pin.
90-8M0050731 MAY 2011
Description
Description
a
Where Used
Oil seal and O-ring surfaces as shown
Roller bearing
Where Used
Crankshaft sealing rings
a -
Center pins
8700
Powerhead
Part No.
92-802859A 1
92-858021K01
Part No.
92-858021K01
Page 4A-49

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