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and OSi models
If seepage occurs
Locate the exhaust Y-pipe where the old shutters are situated
688-12411-10-00 Yamaha 130B 130 2-Stroke 1989–2001 688-12411-11-00 Replaces 688-12411-00-00
Thread the new plugs into the ports and hand-tighten only until snug
26-88397A1 Upper Gearcase Seal Kit for Mercruiser Alpha One Gen II | JLM Marine family-yamaha-4mlhr and OSi modelsUpper Gearcase Seal Kit for Mercruiser Alpha One Gen II 26 88397A1 This comprehensive upper gearcase seal kit is engineered to fit Mercruiser Alpha One Gen II stern drives from 1991 and up. Designed to restore proper sealing and prevent gear oil leaks, this kit provides all the essential seals, o rings, and gaskets needed for a complete upper gearcase service. This aftermarket replacement kit directly replaces OEM part number 26 88397A1 and cross
