I have a 1996 mariner 150 efi on my classic, my question is how warm shoud the outside of the lower unit be after about a mile and half run, I loaded it on the
trailer and when putting on the transom saver I noticed it was warm, not scalding but warm enought you couldn't leave your hand on it for more than a
minute or 2 left it on there several minutes
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lower unit
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 Stepper |
lower unit |
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Posts: 18 (07/04/09 12:19) |
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PhilAddison |
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Posts: 3645 (07/04/09 02:49) |
I suppose everything turns freely and there is no noise? As long as you don't have water in the lube you should be OK. Drain some lube and if its milky
then change out.
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oldtimer57 |
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Posts: 1230 (07/04/09 04:44) |
remember that 1500 degree + exhaust goes right thru the middle of the thing. It can get quite hot from that, even if there is zero friction internally.
There's a channel thru the lower unit, thru the bearing carrier that is exposed to hot gasses.
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Bass Cat Boats |
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Posts: 15948 (07/04/09 06:43) Registered User |
OT57 hit the head again. The Gearcase will hold heat in warm water for reasons he states. It should only be warm and not hot. Running a heat gauge is a good
idea to verify engine temps, if your concerned. Though the case will be warm.
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Stepper |
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Posts: 19 (07/04/09 11:29) |
thanks for the info, i knew that the exhaust went though the lower unit but i figured that the prop would feel warm too, i just put new fluid in it about 2
months ago, i will check again though. thanks for the info
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