How to change impeller on mercury outboard 50 hp

Slide the impeller housing up over the driveshaft and pull the impeller out of the housing to examine it. G231123-G760299 40HP 4 Stroke 21 Ratio.

Make sure the impeller key indexes with the impeller.

How to change impeller on mercury outboard 50 hp. This video is how to change your impeller on a 2012 Mercury Outboard boat motor. 50 HP MERCURY OUTBOARD WATER PUMP IMPELLER REPLACE - YouTube. Locate and remove the four screws holding the impeller housing onto the lower motor housing.

Slide the impeller housing up over the driveshaft and pull the impeller out of the housing to examine it. If the impeller blades do not spring back into position easily or show wear and cracks in the rubber you will need to replace it with the new impeller from your water pump kit. This gasket has a neoprene bead built in so no cement is required or should be used.

Install the new key which sits in the flat on the shaft. Then slide down the new impeller making sure that the key-way in the hub lines up with the key previously fitted. 1993 mariner outboard need to change the water impeller i loosened the bolts to drop the lower unit but cant figure out where to disconnect the shift linkage.

Not getting any play in the lower unit housing either should i try to break loose with a mallet. It has probably never been doneHow to disconnect 50 hp mariner outboard lower unit shift. Usually just the Impeller baseplate a gasket or two are needed but the kit often also includes a new base with new oil and water seals slinger washer and o-ring for the top of the driveshaft and instructions.

Usually its only a few more than the impeller and baseplate alone. 90-10184020 FEBRUARY 2001 Printed in USA. - 2001 Mercury Marine Page 1 of 26 INSTALLATION MANUAL 25 30 40 50 and 60 HP 4-Stroke NOTICE TO INSTALLER.

After completing assembly these instructions should be placed with the product for the owners future use. Remove the housing and pull up on the impeller to remove. Installation is the reverse.

Make sure the impeller key indexes with the impeller. When you go to put the housing back on put a little grease inside the housing. While pushing the housing down over the impeller turn the driveshaft.

Remove the bolts or nuts that are securing the impeller pump housing to the lower drive unit with a wrench. Pull the impeller pump housing up off of the drive shaft. If the housing appears stuck use a screwdriver to gently pry up the housing to loosen it.

Remove the Woodruff key from your pocket dab a bit of white marine grease onto its rear edge and insert it in the keyway on the driveshaft. Slide the pump impeller down the driveshaft aligned so it slips over the Woodruff key. Push the impeller into place.

If you havent changed the impeller when you inspect the water pump as part of the preparations for the winter layup or the spring fitting-out three years is the outer limit. One manufacturers yearly or 100-hour maintenance schedule does not include an inspection of the water pump and impeller but insists you change the impeller at 300 operating hours or three years whichever comes first. I want to replace the impeller on a 5 hp mercury outboard.

I can only get the lower unit to drop down about two inches and it will go no further. I own a 1978 or there about 50 hp Mercury outboard. I took the lower unit off for some water pump repair.

By putting it back on the motor only is in forward gear in op everse or neutral. Water pump impeller repair kit for 30HP-50HP Mercury 2 and 4 stroke outboard motors. Make sure to check your serial numbers and know your motors model year before ordering.

G590000 UP 30HP 2 Cyl. G053314 UP 40HP 2 Cyl. G053314 UP 40HP 4 Stroke Std.

G231123-G760299 40HP 4 Stroke 21 Ratio. This Mercury outboard water pump was run dry briefly and the impeller literally melted within the housing. You can see the imprint of the impeller on the back.

In this case the entire water pump was replaced. When the impeller fails the pump cant pump and the engine will overheat. Ive seen old outboards that got so hot the paint burned.

In most cases you will never need to replace the water pump assembly just the impeller. Sometimes the rubber impeller becomes un-bonded to the metal hub making for an inoperative pump. Check if there is any wear or deformities on the impeller if so then replace it.

Also check for deteriorationscoring of the stainless steel base plate along and the housing cup that the impeller sits. Align the key-way in the impeller with the Woodruff key on the driveshaft and slide the impeller down the driveshaft. Press the impeller into place with the keyway aligned.

Slip the upper fiber washer onto the driveshaft and slide it down on top of the impeller. How to Replace the Propeller on a Mercury Outboard By Will Charpentier Every year or every 100 hours you are supposed to remove the lower unit of the 60-horsepower outboard motor on your boat and inspect the water pump for its condition – and replace it if necessary. I changed the impeller on my 90 Hp Merc and now the motor is stuck in forward gear.

The boat motor started in gear which I did not think it could do. I own a 1978 or there about 50 hp Mercury outboard. I took the lower unit off for some water pump repair.

By putting it back on the motor only is in forward gear in op everse or neutral. I have a 71 or 73 mercury 500 50 hp outboard and i dont believe the water pump is working where should the pump be pumping the water out from with the muffs connected. Charter Captain IS.