S&S Cycle Oil Filter Mount for S&S Alternator/Generator, KN-Series, P-Series, SH-Series, 1986-90 Harley-Davidson Sportster models, S&S Superstock and Special Application Crankcases for Sportster and Buell Models - Manual (Page 7)

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20- If present, connect pressure switch wire and tighten nut.
21- Replace any engine oil that was drained during installation
23- Install new oil filter by placing a small coating of oil over the rubber seal and thread the filter onto the filter adapter nut until sung. Rotate the
filter an additional ¼ to ½ turns.
"Air lock" or cavitation can occur if trapped air is not released from the oil pump. It can occur when oil has been removed from feed and
return lines, and interferes with oil circulation. It is installer's responsibility to remove trapped air by priming the pump prior to running
the engine and to confirm correct pump operation with engine running. Models with oil tank below transmission require precautions to
prevent air from entering oil pump during oil changes
24- If necessary re-prime oil pump by loosening the oil feed connection at the pump and starting the engine at idle. Allow a few ounces of oil to
leak out of the line and then tighten.
25- Turn off engine and check oil for correct level in tank.
26- Restart engine and check for leaks, tighten fittings or clamps if necessary.
CAUTION