This MTD Genuine Factory Part replaces worn out or broken inner real springs on gas Non-Brushcutter trimmer cutting heads. It is installed between the inner reel and the outer spool assembly. Its purpose is to keep pressure on the Bump Head Knob Assembly.
Consult trimmer owners manual for proper part number identification and proper installation
Genuine OEM replacement part # 791-610317B
791-610317B replaces part # 791-610317A, 791-610317 and 791-BQ01642
Inner reel spring
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