For a 1975 Johnson 25hp Tiller Engine, it's recommended to use a high-quality gear lube specifically formulated for marine outboards. Typically, a 90-weight gear oil, such as a TC-W3 rated oil, is suitable for the lower unit. Always check the owner's manual for any specific requirements or recommendations. Regular maintenance and using the correct lube will help ensure optimal performance and longevity of the engine.
Johnson commercial engine AJ25RPJ is a 1982 25HP.
Everything I've seen about the OMC engines smaller than 25hp says they were all shipped with tillers on them. They could be converted to remote steer but the manufacturer told you to leave the tiller on it. If you don't have one, the person who did the conversion removed the tiller. And since he probably threw it away...try eBay for a tiller for a Johnson or Evinrude engine. Once you get it, put it on and be happy.
1992
1985
25hp 1972
50:1
50:1
Model number J25REDR, is a 1996, 25hp Johnson.
50:1 even if your cowl has a sticker showing 100:1, Johnson later released a notice to change mixture to 50:1
50:1
Model number E25TELCSA, is a tiller electric start, 20" shaft, 1980 year model, 25hp Evinrude outboard.
freeze plug on top of engine.