KG4 impeller replacement

[bsplit]

I need to change the impeller on a Mercury KG4. After looking at the parts list, it looks like it’s just forward of the prop and not too difficult to replace. Is there anything special I need to know other than the cover has to be turned clockwise to be removed? Also, where is the best place to purchase the impeller?

Thanks,
Jim

[brian-grigsby]

I found a NOS impeller on eBay awhile back. Its a pretty easy process as long as the cover comes off. May need to use some heat. The job is much easier using the correct Mercury tool. I tried a spanner type wrench on mine, but couldn’t get enough leverage on it. Good luck…

[wedgie]

It was several years ago now, but pretty sure it was Jeff Register who told me to use a short section of pvc pipe ( shaved down on the outside a bit). Clock the impeller into the pipe with some Vaseline and then use the pipe as a guide to get the impeller started into the pump housing. Worked well !

[bill-m]

You may have good luck getting a NOS impeller at Seaway Marine. They bought all of mercury’s old shelf stock years ago. I got 2 impellers from them for my KF5 Super 5 last year. If you want to go to the expense of buying a pump housing tool, you can get one from johnmcintosh.com for about $35.00.

[bsplit]

Thanks all for the help

Jim

[20mercman]

Big Rich on here sells replacement impellers for that motor also. He is often on the classified section, also Brian Wilcox makes or rebuilds them also. I would prefer a rebuilt one or an aftermarket vs. a NOS one as the last NOS one I had, the blades broke off right away. Time is time…..

Steve

[jeff-register]

My last KG7 impeller came from Old Mercs.Com. Made from urthane of some kind & has worked on the kf5,KE7,KF7 & KG7Been out of touch lately so check my sourses.

[bsplit]

I replaced the impeller yesterday, and the motor is pumping water. Apparently the previous owner had the cover off, because it was loose. I made a tool out of a crescent wrench and roll pins. JW in Dixie has posted pictures in the past, and I used his design….Thanks, JW

Next impeller replacement will be on a KF7……hopefully it will be similar.

Jim

[Doug Wilson]

KF7 should be the same set up so your wrench should work great for it too.

Doug

how is it motors multiply when the garage lights get
turned off?

[bsplit]

Thanks, dd

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