POWERHEAD
90-855347R1 JANUARY 1999 Page 4A-31
5. If necessary, clean crankshaft surfaces with crocus cloth.
51847
a
b
c
c
a-Crankshaft Journals
b-Crocus Cloth
c-Work Cloth “Back-and-Forth”
WARNING
DO NOT spin-dry crankshaft ball bearing with compressed air.
6. Thoroughly clean (with solvent) and dry crankshaft and crankshaft ball bearing. Re-
check surfaces of crankshaft. Replace crankshaft, if surfaces cannot be properly
“cleaned up.” If crankshaft will be re-used, lubricate surfaces of crankshaft with light
oil to prevent rust. DO NOT lubricate crankshaft ball bearing at this time.
Crankshaft (and End Cap) Bearings
1. After cleaning crankshaft, grasp outer race of crankshaft ball bearing (installed on low-
er end of crankshaft) and attempt to work race back-and-forth. There should not be
excessive play.
2. Lubricate ball bearing with light oil. Rotate outer bearing race. Bearing should have
smooth action and no rust stains. If ball bearing sounds or feels “rough” or has
“catches,” remove and discard bearing. (Refer to “Powerhead Removal and Disas-
sembly - Crankshaft Removal and Disassembly”.)
Lower Ball Bearing
3. Thoroughly clean (with solvent) and dry crankshaft center main roller bearings. Lubri-
cate bearings with 2-Cycle Outboard Oil.
CAUTION
DO NOT intermix halves of upper and lower crankshaft center main roller bear-
ings. Replace bearings in pairs only.
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