Yanmar marine diesel engine start button adapter bushing
thingiverse
This is a bushing and washer set to adapt this or similar: https://a.co/d/i04TfvH to be used to replace Yanmar part 124070-91300 (engine start button) on the Yanmar type B engine control panel, Yanmar Part #: 128170-91002. Since the hole is bigger on the control panel that on these start buttons. This can be found on 3GM and other similar Yanmar marine diesel control panels. Inside hole diameter is 16mm to fit the Amazon switch, outside bushing diameter is 21mm to fit the Yanmar control panel, outer diameter of the entire piece is 30mm to match the footprint of the original switch. keep water out with some sealant or I used a thin neoprene washer behind the bushing and the control panel. works a treat and you spend ~$8 compared to the $37 + shipping OEM part.
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