Reply To: Johnson 15hp

[Don]

I would not use loctite… The screws need retorquing due to the gaskets and sealer setting up, not necessarily because the come loose.   I would use a good sealer (OMC/merc/yamaha) on the gaskets and screw threads.  Be sure to coat the entire shaft of the screws to prevent corrosion and help sealing those areas.  You can remove the rear lower pan easily to get at the lower screws to torque them.  The secret to success here is to retorque the screws several times after the first few outing s with the engine.