92 Force 90HP water inLowerUnit

pneitzer

Cadet
Joined
Dec 22, 2005
Messages
10
I'm looking at a boat with a 1992 Force 90HP. The engine runs fine but the lower unit is slowly taking In water. Is this a common problem? POSSIBLE FIXES?
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: 92 Force 90HP water inLowerUnit

Speaking genericly <br />this occurs on most motors over time.Usually replacing the prop shaft,drive shaft and shift shaft seals will solve the problem.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,754
Re: 92 Force 90HP water inLowerUnit

You might get luckey and fix it by replacing the gasket/washers on the fill and drain screws.<br /><br />Cost, $1 for the washers, plus $5 for a couple quarts of lube.
 

12Footer

Fleet Admiral
Joined
Mar 25, 2001
Messages
8,217
Re: 92 Force 90HP water inLowerUnit

L/U's should be checked after each outing (if possible), for just this reason.<br />It's not only common, but inevitable for a L/U to develope a leak over time. And runtime hours are not the only thing that causes leaks.<br />Not so much of a problem down here in Florida as up north, just sitting on a trailer can destroy the L/U as the water inside freezes and expands.<br />Running a motor with comtaminated lube usually ends-up in a grenaded L/U.<br />But to answer your question, it is common and routine.<br />However, with the motor in neutral, rotate the prop by hand while watching the porop shaft, or prop's center, for any wobble or out-of-true -- This could mean a bent prop shaft, and is a VERY expensive fix.<br />If the prop has any chips or pieces missing from any of it's blades, it may be running out of ballance, causing the seal to wear prematurely.<br /><br />Not that having new seals installed is cheap, but it will be by comparison.<br />If you are handy, get the manual, tools,L/U seal kit and a new impeller, and go for it.<br />Otherwise, expect about a 250dollar repair bill for the job. Add an additional 100-200, if the drive or prop shaft is bent.<br />Ah yes....Just one of the many "ca-chings" to boat ownership. :)
 
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