81505M – Ring Stop – Mercury / Mariner

The 81505M Mercury ring stop fits inside the starter assembly on many Mercury and Mariner outboard engines. This small metal ring works with the starter’s coil spring and bushing to help hold parts in place. Marine parts diagrams show this item listed as “RING, STOP” with part number 81505M required once per starter assembly.

This ring stop prevents internal starter parts from moving too far out of alignment. It acts as a physical limit for springs and rotating components in the recoil or electric starter mechanism. Over time, wear or corrosion can change how the ring stop works. When the stop wears, the starter rope may bind or the spring may not retract smoothly.

In many marine parts systems, the 81505M Mercury ring stop has an updated replacement number of 92671M. Some parts catalogs show this alternative number when 81505M is no longer available in stock.

This starter ring stop sits in a high-movement area, so it can wear faster than heavier engine parts. Replacing it during a starter rebuild helps keep the starter reliable. Owners often change the stop ring at the same time as the spring and bushing to restore smooth pull-starting action.

Shop at Arizona Outboard Dismantlers to keep your outboard running strong and ready for the water. Quality parts like the 81505M Mercury ring stop help preserve dependable starting performance for your Mercury outboard.