Mercury Comet KF 3 impeller questions

[diaric]

Re: Mercury Comet KF 3 impeller questions

the picture laddies sent doesn't look like yours, don't see a water intake in front of your prop. the drawing link i sent looks similiar, and shows the impeller inside the leg. how it all comes apart is a different story

 

[freddyray21]

Re: Mercury Comet KF 3 impeller questions

the link you sent seems to indicate it is in the leg, but in any event I don't have all the parts in the pic you sent either and no room to put them if someone had left them out. Figures I would have the oddball one.

 

[Laddies]

Re: Mercury Comet KF 3 impeller questions

Thats a early unit for the KF 3, I ad to dig out a 1955 parts and service manual to get this picture, the assembly is done just like the Quicky lower unit so you don't need to pull the w/pump cartridge, the imp. goes in it and is covered by the nut,

 

[Chinewalker]

Re: Mercury Comet KF 3 impeller questions

Laddies is right. Mercury used essentially the same design on all their direct-drive motors, locating the impeller on the propshaft.

If you should ever need to remove the waterpump cartridge - it pulls out, it is not threaded. Those two holes are for a puller. I find it easier to just pull out the propshaft, which brings the waterpump cartridge with it...

- Scott

 

[freddyray21]

Re: Mercury Comet KF 3 impeller questions

thanks to all.

 

[freddyray21]

Re: Mercury Comet KF 3 impeller questions

reinstalled the impeller and it's got good flow. It just seems to be warmer than I would like. I'm not that familiar with these older motors. Do they run hot?