Powerhead
90-8M0050731 MAY 2011 Page 4A-49
Tube Ref No. Description Where Used Part No.
95
2-4-C with Teflon Oil seal and O-ring surfaces as shown 92-802859A 1
14
2-cycle Premium
Outboard Oil
Roller bearing 92-858021K01
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. Description Where Used Part No.
14
2-cycle Premium
Outboard Oil
Crankshaft sealing rings 92-858021K01
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.
a - Center pins
3. Position all crankshaft seal ring gaps straight up.
4. Align the hole in each center main bearing race with a center pin.
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