Sharpening impeller

[BassMaster#1]

For those of you with a jet boat who do you all use close to eureka area to sharpen your impeller? Got some rocks in the impeller while I was out last weekend? Thanks

[grizwilson]

This is my guide....

 

https://fishwithjd.com/2010/05/19/5-tips-to-help-improve-your-outboard-jets-performance/

you have the hard part (disassembly) done

or: 

 

[mikeak]

I always sharpened my own untill they would'nt shim up anymore ,then I would have them rebuilt,much cheaper than a new impeller. Also, you can fix those wear rings on the sleeve your self. In the picture it looks like your impeller isn't shimmed up enough. I lived in Alaska and used to guide on some of the rivers,I've had a lot of experience sucking gravel. I used to carry 3 impellers and two sleeves plus an extra foot. If I can help you in any way just send me a private message

  Mike

[BassMaster#1]

What I'm confused about is what part to sharpen, the top portion or the bottom.  if i have the impeller faceing the the way it goes in boat do i sharpen the top part or bottom part....thanks for the link 

[fishinwrench]

Here ya go....

First measure the amount of material missing from the end of a blade, and take that x3.  If it adds up to more than 1 3/4" then you can go ahead and trim as shown above and continue to use it..... But it is time to buy a new one soon.

[BassMaster#1]

So according to this diagram I would sharpen the underside as if it was installed in the the motor.  Just a file would do it? Thanks

[fishinwrench]

Correct on the side you want to remove material from.

You'll want to remove the impeller, put it in a vise and use an angle grinder.   Doing it with a file would take you all week and make you hate life. 

[grizwilson]

6 hours ago, fishinwrench said:

Correct on the side you want to remove material from.

You'll want to remove the impeller, put it in a vise and use an angle grinder.   Doing it with a file would take you all week and make you hate life. 

True, I take mine down with a grinder then finish with file, just be careful.