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Jan 23rd, 2013
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2017 250 ProXs impeller change #14467559 09/03/22 11:38 PM
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IKELEVI Offline OP
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Changing my impeller on Monday. Watched a couple of videos and doesn't seem too hard. You guys have any tips or tricks to doing this? Do you guys lube the impeller with anything etc? Thank you!


17 LEGEND V20
17 MERCURY 250 Optimax ProXs
Simply Texas Real Estate-Tracy Lorance
Norman Agency, Farmers Insurance Princeton TX
Studio 78 Salon and Boutique Wylie
Moritz Chevrolet - 9101 Camp Bowie W Blvd, Fort Worth, TX - Monte Coon (817) 696-2003
Re: 2017 250 ProXs impeller change [Re: IKELEVI] #14467594 09/04/22 12:31 AM
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SteezMacQueen Online Happy
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I recently changed mine. It was 95% easy with 5% you gotta be joking. The woodruff key would not come out. I worked on that part for an hour.

It really helps to have a very stable surface to work on. I cut a piece of 1” mdf with a slot in it to hold the lower unit. I put a little vasoline on the impeller to help slide it into the housing.


Eat. Sleep. Fish.
Re: 2017 250 ProXs impeller change [Re: IKELEVI] #14467604 09/04/22 01:04 AM
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I use superlube when I change em , I am working Monday if you want to drag it down to NAPA I make sure you get it done correctly I done a few over the years.

Re: 2017 250 ProXs impeller change [Re: IKELEVI] #14467716 09/04/22 03:16 AM
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angleiron Offline
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Re: 2017 250 ProXs impeller change [Re: IKELEVI] #14467761 09/04/22 11:52 AM
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I always use dawn dish soap to lube the impeller for reassembly. Get a couple of 3" bolts (I think they are M6x1.00) and cut the heads off them to make guide pins, makes assembly much easier.

Steez: Not sure why the key wouldn't come out. I've never had one that didn't just fall off the driveshaft when I took the impeller off.

Re: 2017 250 ProXs impeller change [Re: Bryanmc57] #14468106 09/04/22 08:07 PM
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Originally Posted by Bryanmc57
I always use dawn dish soap to lube the impeller for reassembly. Get a couple of 3" bolts (I think they are M6x1.00) and cut the heads off them to make guide pins, makes assembly much easier.

Steez: Not sure why the key wouldn't come out. I've never had one that didn't just fall off the driveshaft when I took the impeller off.

One word….YAMAHA!


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