Howling lower unit/outdrive

A

Allie B.

Recruit
Joined
Sep 6, 2011
Messages
1
Just replaced the lower unit in a merc 260 with a brand new one! Why would it be making a howling noise? Runs great otherwise just looking for some opinions
 
jigngrub

jigngrub

Fleet Admiral
Joined
Mar 19, 2011
Messages
8,155
Re: Howling lower unit/outdrive

Are you following the break-in instructions?
 
oops!

oops!

Supreme Mariner
Joined
Oct 18, 2007
Messages
12,932
Re: Howling lower unit/outdrive

have you checked the oil?......do you know the condition of the gymbal bearing?
 
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