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Old 09-20-2017, 04:53 PM
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Default 1993 Johnson 48 SPL lower Unit

I have the above motor slipping in drive. I believe it is the clutch dog that is bad. reverse works fine. My plan is to remove the retainer housing and pull shaft & all out inspect and hopefully just replace the the Dog and spring. Of course replace the big seals since nothing is leaking. Any pitfalls or suggestions I need to know about?
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Old 09-20-2017, 08:22 PM
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There is nothing within the lower unit that would fail in such a manner to cause slipping.

What do you mean by "slipping"? What exactly is the engine doing... how does it act?
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Old 09-21-2017, 06:51 AM
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The motor runs strong and is fine in reverse, when put in forward the motor still runs fine but the thrust drops and skips. From what I have researched it is possibly a worn clutch dog at best or bad forward gear worse, Or even worse whole bottom end is bad. I am hoping it is the clutch dog $ 70.00 and replace O ring seal (full seal kit is $30.0). So my plan is to remove retaining screws and pull whole set out inspect forward gear and clutch dog. Replace the dog and spring. Replace o ring seals and reinstall.

What do you think?
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Old 09-21-2017, 11:17 AM
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If it feels like the engine is hitting a submerged object every so often but only at the higher rpms... yes, that would be a clutch dog problem, having the engine jump out of gear and right back in.

BUT... if it is a case of the rpms increasing and the forward motion of the boat slowing down... that is a case of propeller failure, a propeller slipping hub, in which case the propeller would require re-hubbing or replacing.

Which one is happening in your case?
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Old 09-21-2017, 04:52 PM
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Definitely clunky
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Old 09-21-2017, 08:45 PM
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Quote:
Originally Posted by No Clew View Post
Definitely clunky
I have no idea what that means!
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