Reply To: chris craft challenger-Lower Unit-lubrication?

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July 24, 2024 at 7:11 pm #289418
CHUCK
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    I attached a page from the Owners Manual for a Chris Craft Commander;  the 10hp model.  They make mention of “grease” as opposed to “oil” but they make no additional recommendations.

    I think you would be fine using something like Lubriplate 105 or John Deere Corn head grease.  I have had excellent results with either of those two in direct drive (non-shift) gearcases.  The Corn Head grease might be cheaper so I’d probably go with that.

    It can be injected with a squeeze tube or a grease gun.  Pump it into the lower opening until it oozes out the top.  It might push some old grease out first.  That’s good.

     

    PS:  Do you have spark?  I would check spark and compression.  A good way to evaluate the general health of a motor before spending a lot of money.