Powerhead
90-8M0050731 MAY 2011 Page 4A-47
Piston Ring Expander 91‑24697
5. Lubricate the center main crankshaft roller bearings and races with 2‑Cycle Premium Outboard Oil.
Tube Ref No. Description Where Used Part No.
14
2-cycle Premium
Outboard Oil
Center main crankshaft roller bearings and races 92-858021K01
6. Install the center main crankshaft roller bearing so that the hole is toward the driveshaft end of the crankshaft.
7. Verify that the retaining ring bridges the separating lines of the bearing race.
a - Hole is toward driveshaft end
b - Retaining ring
c - Separating line
Tube Ref No. Description Where Used Part No.
14
2-cycle Premium
Outboard Oil
Center main crankshaft roller bearings and races 92-858021K01
8. Place the center main crankshaft roller bearings on the upper and lower main bearing journals as shown.
9. Install the center main bearing races as shown.
10. Secure the center main bearing races together with the retaining rings. Make sure the retaining ring bridges the separating
lines of the bearing race.
a - Flywheel end
b - Driveshaft end
c - Center main bearing races
11. Install the new oil seals into the lower end cap as follows:
a. Apply a thin bead of Loctite 271 Threadlocker to the outer diameter on the two lower end cap oil seals.
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