1993 9.9 johnson outboard water pump replacement

bunky28 · Sep 16, 2011

how do you get at the shift rod to disconnect it so i can drop the lower unit to replace the water pump impeller?

oldcatamount · Sep 16, 2011

Re: 1993 9.9 johnson outboard water pump replacement

Remove the 6 bolts holding the lower unit to the exhaust housing. The lower unit should pull down about a half inch. Peek inside and you'll see the shift rod connector with 2 screws in it. Remove the bottom screw and the unit will come out.

johnson1959 · Dec 9, 2011

Re: 1993 9.9 johnson outboard water pump replacement

I see the second bolt but hard to access it. Can I remove the top bolt as it is more accessible

oldcatamount · Dec 9, 2011

Re: 1993 9.9 johnson outboard water pump replacement

Put the shifter in reverse, that'll let you access the lower screw. If not, either screw would work. It's just a little easier to re-install it if you work with the lower screw.

raczekp1 · Dec 10, 2011

Re: 1993 9.9 johnson outboard water pump replacement

i remove this upper bolt.
you shouldnt remove this bottom one.

johnson1959 · Dec 10, 2011

Re: 1993 9.9 johnson outboard water pump replacement

raczekp1 said:
i remove this upper bolt.
you shouldnt remove this bottom one.

I already removed the bottom one so I sure hope it is easy to put back together. Now do I just remove the 4 bolts on the black housing to access the impeller? Does it just pull off? Should I replace anything else or just the impeller. On a side note I noticed the gear oil was milky. Are there seals to replace in this area or are they in the prop area and if so is it simple to replace those in the prop area?

HighTrim · Dec 10, 2011

Re: 1993 9.9 johnson outboard water pump replacement

Disconnecting the bottom bolt is fine.

Remove the impeller housing and you will see the impeller. DO not lose the key on the shaft. Hard to say what else needs to be replaced without visual inspection.

WHat caused you to change the impeller in the first place?

Re sealing the gearcase might be a good idea. You may want to invest in a manual, check ebay.

raczekp1 · Dec 10, 2011

Re: 1993 9.9 johnson outboard water pump replacement

read good info at this page
http://www.sschapterpsa.com/ramblings/Ramblings.html
scrol down and look for outboard info

AlTn · Dec 10, 2011

Re: 1993 9.9 johnson outboard water pump replacement

100% agreement with manual purchase suggestion....you can google, Lerroy's Ramblings...go to his writings concerning 9.9 and 15 hp. maintenance and repair as it contains a wealth of info concerning these motors

johnson1959 · Dec 11, 2011

Re: 1993 9.9 johnson outboard water pump replacement

Thanks. The reason I replaced it was the motor did not circulate water when in gear at low idle speed. It shot out a good stream in neutral and at higher than idle speeds which I found strange but was told it likely was the impeller. Do you use a grease to reseal the gear case? Is it worth taking it back apart as I found it tricky to get that linkage connector and bolt back together. That seemed to be the only difficult part.

HighTrim said:
Disconnecting the bottom bolt is fine.

Remove the impeller housing and you will see the impeller. DO not lose the key on the shaft. Hard to say what else needs to be replaced without visual inspection.

WHat caused you to change the impeller in the first place?

Re sealing the gearcase might be a good idea. You may want to invest in a manual, check ebay.

johnson1959 · Dec 11, 2011

Re: 1993 9.9 johnson outboard water pump replacement

AlTn said:
100% agreement with manual purchase suggestion....you can google, Lerroy's Ramblings...go to his writings concerning 9.9 and 15 hp. maintenance and repair as it contains a wealth of info concerning these motors

Thanks. Great Site!

1993 9.9 johnson outboard water pump replacement

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