2009 mercury 50 hp.

N

nyanll

Recruit
Joined
Sep 24, 2012
Messages
3
my motor makes a high pitched whining noise that comes from the lower unit. it doesn't do it all the time but i'm worried about it. Can only hear it at lower rpm's. Anybody have any help?
 
M

Maxz695

Guest
Re: 2009 mercury 50 hp.

there are several bearing in the lower unit. If they are not well lubed ( low on oil) they will of course whine. If there is water in there then it,s time to check for metal inside the oit of the unit. When was the last time you changed the oil in it?
 
N

nyanll

Recruit
Joined
Sep 24, 2012
Messages
3
Re: 2009 mercury 50 hp.

just changed the lower unit oil in july. was already making noise and still is but thxs for the response, any other ideas?
 
A

aussieflash

Lieutenant Junior Grade
Joined
Feb 5, 2011
Messages
1,004
Re: 2009 mercury 50 hp.

How was the old oil...any water in it?Any metal shavings on fill plug?
Pull the prop and check for debris,check shaft spinning straight.
Drop leg and check shaft,also check water pump for debris or damage.
If ok id be looking at bearings.
 
N

nyanll

Recruit
Joined
Sep 24, 2012
Messages
3
Re: 2009 mercury 50 hp.

aussieflash said:
How was the old oil...any water in it?Any metal shavings on fill plug?
Pull the prop and check for debris,check shaft spinning straight.
Drop leg and check shaft,also check water pump for debris or damage.
If ok id be looking at bearings.
Click to expand...

yea the oil looked fine & I didn't see any shavings. Haven't checked the water pump but that will b my next option. Thxs for your ideas.
 
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