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Lifeisfun Petty Officer 1st Class Joined. Then comes the difficult bit -.
In this case the entire water pump was replaced.
Replacing impeller on mercury outboard. How to service and replace your water pump impeller on a mercury outboard. 75hp 90hp 115hp 125hpLarger Optimax outboards run the same water pump as do M. 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. The maintenance schedule for the 150-hp Mercury outboard motor calls for replacing the water pumps impeller after every 100 hours of operation or once a year.
Unlike many of Mercurys larger motors the lower unit found on this model is equipped with a water pump housing that uses a replaceable cartridge insert. There is a small keyway that drops out as you take off the casing over impeller. This must be back in place as you reassemble.
Stick in place with grease or hold witha bit of string to get impeller case back on. Then comes the difficult bit -. 85 mercury 90 hp in line 6 2 cycle.
I just replaced the impeller and seem to be stuck in gearThere is a clicking sound when I rotate the prop with the motor offThrottle in neutral position prop will. Trying to align lower unit drive shaft on mercury outboard 150 after replacing impeller. There appears to be something blocking the entrance to the upper gear and preventing alignment Mechanics Assistant.
Sometimes boat issues seem like theyll be really complicated but end up being easy to fix. Disconnect the shift rod under the carb port side remove the 4 bolts the hold it to the mid section drop the unit remove the 2 bolts that hold the impeller cup on and change the impeller then rev the process X xjeepguy Recruit Joined Apr 24 2009 Messages 3 Apr 24 2009 3 Re. Mercury 8 hp 2 stroke Impeller Hello Laddies.
Replacing the impeller in your Mercury outboard helps ensure your outboards cooling system works perfectly protecting the motor from overheating. Watch the video above and follow the steps below to replace the water pump in a Mercury 40HP 2-Stroke motor. Home Forum Ask A Member Mercury Mark 2025 Impeller Installation This topic has 7 replies 5 voices and was last updated 6 years 4 months ago by jeff-register.
Currently there are 0 users and 1 guest visiting this topic. How Much Does It Cost to Replace A Water Pump Impeller On A Mercury Outboard. Replacing the impeller is a relatively inexpensive and straightforward repair.
Depending on your model of Mercury outboard you can expect only to pay between 15 35 per impeller. 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. All outboard manufacturers recommend that you at least inspect the impeller every 100 operating hours or once yearly whichever comes first. As an astute boat owner its certain youll realize you might as well replace the impeller – slide it off the driveshaft and slide a new one on – since youve already removed the lower unit and the pump.
SSteps for replacing impeller on 60 HP 4 stroke pretty striaght fwd. Remove the trim tabdissconect the speedo tuberemove 5 bolts 2 on each side and one in the trim tab pocket. Drop the caseremove the 4 pump boltsreplace pump parts as nessasary and reverse the operation.
Leave the shifter in N. Lifeisfun Petty Officer 1st Class Joined. Replacing an impeller on a 15hp Mercury.
I had always heard that outboard impellers are inside the lower unit but had never confirmed that and never knew how it worked. And while there is just about everything else posted up on Youtube Justin had a little more difficulty trying to get a good guide on exactly how to do it. Wont shift into reverse after impeller replacement The prop will spin freely in neutral only one way in reverse and both ways in forward with clicking sounds I believe.
What ever gear your prop is in F N or R then position your throtle lever to match and fasten the splined coupler you should be good to go. Next the damaged impeller is quite visible. To remove the impeller starts by folding down the 2 flags that keep that big nut from spinning.
Then you can get a pair of pliers on that nut and remove it. The nut flap washer and a bunch of other washers then slide off easily. The impeller then can slide off.
It make take a little wiggling.