1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 188Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 188

POWERHEAD
Cylinder Block
1Lubricate piston rings, piston and cylinder wall with light oilIMPORTANT: DO NOT seat crankshaft fully into block until center main sleeve and bearing half are installed2Keeping crankshaft horizontal, guide pistons into cylinder bores
31994 Model 9.9 and all Model 68: Install 12 of center main bearing sleeve and bearing into cylinder block

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