Tighten the bench vise just enough to hold the unit upright while you replace the water pump. Extract the four 1/4-inch bolts that hold the water pump housing to the top of the lower unit, using a 1/4-inch socket. Lift the water pump housing off the driveshaft and pull the impeller drive pin from the driveshaft with your fingers.
Do I need to change the impeller on my water pump?
Steps to follow Remove the lower unit from the boat. Remove the mounting bolts on the water pump. Remove the O-ring from the drive shaft. Remove the water pump case. Check for sand, dirt and debris in the powerhead. Remove the impeller with a screwdriver. Note the position of the plastic key, then remove and replace it.
How much does it cost to replace an outboard water pump?
Mar 21, 2013 · Re: Replacing water pump on 1987 90 HP Johnson A new impeller is quite stiff at first. I always use a little Vaseline (or grease) and wipe it inside the impeller cup before installing the impeller itself. Be sure you have the vanes turnung clockwise. It souldn't matter where the shift lever is although, reverse seems to be the most convieniant.
How do outboard water pumps work?
How often should you change your boat’s water pump?
How do you change the impeller on a Johnson 90?
1:198:30How to Replace the Water Pump on a Johnson Evinrude 85-300hp ...YouTubeStart of suggested clipEnd of suggested clipRemove the pump housing by pulling straight up inspect the stainless pump housing for grooves orMoreRemove the pump housing by pulling straight up inspect the stainless pump housing for grooves or other signs of wear. If. You see grooves like these it needs to be replaced. Pry up on the impeller.
How do I know if my outboard water pump is bad?
Signs of a bad boat impeller are either boat engine overheats when you try to accelerate, loss in impeller vanes flexibility, physical wear & tear like cracks in impeller vane roots, melted or worn of vanes. Even if you see less or no water coming out of tell-tale, it might be due to a bad impeller.
How do you change a 90 water pump?
0:017:52how to replace waterpump " 90 hp mercury outboard - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou have one boat underneath right here. So when you get to five bolts loose you can take it out putMoreYou have one boat underneath right here. So when you get to five bolts loose you can take it out put it in forward gear.
How do I know if I need to replace my impeller?
Ignore the symptoms of an impeller in need of replacement only if you wish to purchase a new motor.The Maintenance Schedule. ... When the Outboard Shows Signs of Overheating. ... A Reduced Stream of Water at the Cooling Water Outlet. ... The Impeller Has Been In Service for Three Years.
How do you test an outboard water pump?
How Do You Test an Outboard Water Pump? On many outboards, you can simply put on the muffs and start the engine. You should see a steady stream of water coming out of the holes on the top of the engine. However, some brands do pump out a stream, but it might not look steady.
How do you test an engine water pump?
5:0210:50HOW TO CHECK IF YOUR WATER PUMP WORKS & CIRCULATES ...YouTubeStart of suggested clipEnd of suggested clipCut the top off fill it up let it hang right here. Start the engine until the bubbles come out revMoreCut the top off fill it up let it hang right here. Start the engine until the bubbles come out rev it up turn on turn up the heater.
When should I replace my outboard water pump?
Salt, sand, mud, sticks, and other debris take their toll on the pump impeller, housing, and related parts. That's why most outboard technicians recommend replacement every season, or at worst every other season.
How do you change the impeller on a 90 hp Yamaha?
4:5312:50Yamaha 90 Water Pump Replacement | Yamaha B90TLRX | Boats.netYouTubeStart of suggested clipEnd of suggested clipSimple. Just like that alright the next thing we want to do is actually remove the impeller. ItselfMoreSimple. Just like that alright the next thing we want to do is actually remove the impeller. Itself do that I'm taking you a little flat-head screwdriver.
How do you change a water pump impeller on a 60 hp Mercury outboard?
0:428:09Mercury 2010 EFI 60hp 4 Stroke Waterpump impeller ServiceYouTubeStart of suggested clipEnd of suggested clipSo we'll remove the prop first I always make sure you carefully bend these cards. Down. Okay thatMoreSo we'll remove the prop first I always make sure you carefully bend these cards. Down. Okay that stops the locknut.
Is a water pump and impeller the same thing?
The heart of the cooling system of your vehicle is the water pump, and as a key part among its components to carry out its function, there is the impeller.Jun 23, 2021
How long does it take to change an impeller?
Changing an impeller is not a daunting task and it's one that every boater should consider adding to their arsenal of DIY maintenance. Changing an impeller, on many engines, usually takes less than 20 minutes even if you are fairly slow.
Where is a boat impeller located?
0:007:28How to Change Out Your Impeller on Your Boat - YouTubeYouTubeStart of suggested clipEnd of suggested clipI'm looking at the back side of the driver's seat and then we look at the side of the engine blockMoreI'm looking at the back side of the driver's seat and then we look at the side of the engine block right here then Peller is located right here.