What was found
FLT 6161 - BOS-LGA - UPON GEAR RETRACTION, AURAL WARNING STEADY HORN SOUNDED. GEAR RETRACTED AND EXTENDED NORMALLY. AURAL WARNING WENT OUT AFTER AT 3 MINUTES AFTER 2ND GEAR RETRACTION. ALL RED LIGHTS REMAINED ILLUMINATED ON GEAR RETRACTION. TROUBLESHOT PROBLEM TO ADJUSTMENT OF THE NR 2 ENGINE POWER LEVER/LANDING GEAR SWITCH. ADJUSTED SAME PER MM 31-26-0 AND TESTED OK PER MM 31-26-0 (SEVERAL TIMES). (M)