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How to replace water pump impeller 1989 20hp mercury outboard model # 1-020211G serial # 0C111937

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: how to remove shift rod linkage to pull lower unit

goto local library get book on unit!!! :)

Posted on Jul 07, 2009

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SOURCE: MERCURY OUTBOARD HAS BEEN SITTING (BY SALT WATER)

hi either that or remove the power head so it is easier to work on you will have to replace the water pump impellor anyway
i have done the following with seized motors and" most" of the time it works
use heat on all the bolts before you try and undo them heat the head of the bolt up then allow to cool then use a socket or ring spanner the heat will travel down the bolt ,transfer into the ally casting expand it and you will get the bolt out without shearing it
pistons /this sounds harsh but the motor is goosed at the moment anyway make shure power head is very sequre /socket or ring on flywheel nut 4/5 ft piece pipe over socket bar heat up engine oil OUTSIDE to almost boiling pour down plug holes until full leave 10 min pour oil out reheat it pour it in again 5 min try the pipe/socket clockwise GENTLY you are using a lot of leverage here just move it back and to a bit /then a bit more /then a bit more until it is free now strip it clean the bores up renew what you have to /put it back together
if that didn't work /i presume all the ancillerey's are off the motor /carbs ,elecrics etc plugs out /put p/head in a bucket full of diesel oil( cheaper than penertrating oil and better) leave it 7 days get ALLthe oil out send wife/partner /g/friend out for the day put the oven on max heat 300 degput motor in oven 2 hours max quick as you can /leather gloves or what ever hot oil in cylinders get a socket on the crank shaft and try it
last try you can only do this if a piston is on or near tdc modify a spark plug to take a grease nipple /cut the thread off /long reach plug and braze a grease nipple in it /put as much grease in the bore as you can screw the modified plug in and use a grease gun to force grease in as the grease will not compress it WILLpush the piston down untill it uncoveres a port /messy but at least it has moved it once you have got some movement eventualy the motor will free off best of luck merlin v12

Posted on Aug 29, 2009

saailer
  • 1868 Answers

SOURCE: What year is it and how much is it worth?

Hello! Check the serial # again, The serial# 3134966 isn't a valid number...Also do you mean 220HP? Also the year of the engine should be directly below the serial #...Describe the condition in order to set the retail price...

Guru............saailer

Posted on Feb 04, 2010

seabelow
  • 95 Answers

SOURCE: how do I change the water pump impeller on a

get the kit from boat shop all it takes is four bolts and remove the lower housing.. when you put the impeller in... flex the blade the same way take a photo before you take it apart...inside get a new gasket for between the upper and lower housing too...

Posted on Apr 09, 2010

  • 46404 Answers

SOURCE: Water does not come out of the port hole all of the time.

you might just have dirt in the water view port try a real smal drill bit BY HAND to clean the hole . if the morot doesn't run hot then you really don't have a problem

Posted on Apr 27, 2010

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Check here, you'll need the horsepower and lookup the serial-number range...

http://www.iboats.com/basics/serial_number_year.html#mercury

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The alarm is the overheat horn. It means that your motor isn't pumping water from the bottom of the leg and through the engine cooling ports. You will see water shooting out the side of the motor when it starts getting hot, and if you're not seeing the water shoot out and the horn is on then chances are the pump impeller on the leg is shot. You should never start a boat motor (outboard or any other type of boat motor) without having it sitting in the water or with a water calliper with a garden hose attached on the lower inlets of the leg. If you run it without water you will melt the rubber impeller and damage the engine if it's run too long without water cooling. Take it in to a qualified tech to replace the impeller.

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2000 Mercury 115 ELPTO impeller replacement. The Quicksilver replacement kit comes with various washers / face seal. The water pump housing didn't have a seal on top of the old one. Am I supposed to use...


if you mean a large flat sided 'O' ring then this is to help keep water in the impellor housing !? some housings have gaskets between the base plate and housing , check the impellor in the housing and see if it stands proud as then you need the gasket ! compare with the old one as it mite have been forgotten !! check the seal and tube for the water pipe also ok!

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1977 9.8 hp Mercury Outboard Motor Serrial # 4605112, it's an electric start with a short shaft


put it in forward gear. Drop the lower off by releasing the bolts and nuts holding it holding the lower on. (one is hiding under the back pick up screen)- some models had a plug in the back top of the exhaust/intermediate housing hiding an allen head bolt pointing down.

Once released, put a protector in a vise and clamp the lower to the bench.

2 screws or bolts will hold the water pump cover on. (the drive shaft runs thru it) Clean the carbon and rust off the drive shaft will allow the pump housing and impeller off the lower. Retrieve the funny looking key drive which runs the pump.

Inspect the shaft, the lower unit oil for water. and find all the pieces of the water pump impeller which may have gone places they shouldn't have.- including the outlet tube from the power head. Check this by putting a tube on the end and blowing- you should hear and feel the pressure in the exhaust and tell tale hole.

Now take the model number , the old pump parts to the marina for a replacement. Do a side by side comparison at the marina so you get the right stuff. Check the inside drive of the rubber impeller and see if they are exactly the same.

NOW- put the new wear plate / gaskets and drive key on, hold in place with grease. Slide the impeller on the key and spin the drive in both directions to be sure it has the impeller and will securely turn it.

Put grease in the cup of the pump housing to prevent dry start and help seat the impeller blades. Spin the shaft as you lower the housing in the pump so the blades all face in the right direction (clockwise). Screw in the bolts. Grease up the seal the watertube goes in and the spline end of the drive shaft.

Up the hole it all goes, now you only have to spline the shifter (it hasn't moved has it?) The drive shaft and the water tube all at the same time.

Check the shifter for correct position and bolt it down

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No tell tale.


water pump-
crack in the housing from sitting over the winter with water in it

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Mercury 20Hp impeller/water pump location


It is located inside the lower unit housing. They are fairly easy to replace. Most Mercury authorized service stations will charge around $120 for this task.

Triton72

Mar 26, 2009 | Sport & Outdoor - Others

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