Anybody work on small Honda 4 stroke engines?

[bigcaddy]

I've got a small Honda WT20X trash pump at my office and its mechanical seal is leaking. I have no idea on how to remove the impeller so i can replace the seal.

There is no manual with the pump and the web has been generally useless.

Normally it would be a bolt with left hand threads but this unit has a cast 15/16 nut on the face of the impeller with no visible method of removal. No set screws to loosen and the impeller just spins with the wrench or socket if you attempt that route.

Any help would be great since i plan on tackling this tomorrow morning

Ive provided so pictures of the impeller so you can see what i'm working with. I'm pretty much stumped on this one.

 

[Andybcumming112]

Take out spark plug and look inside to see piston go down to bottom of cylinder. Stuff in some rope like starter rope and turn so piston will bind with rope on way back up to top. Helps so won't move.

 

[Red_Bull]

Take the pull rope off and put a wrench/socket on the shaft to hold it while you turn the impeller

 

[bigcaddy]

Thanks, I'll see what I can get done tomorrow

 

[DieselRiver]

Yeah, I work on my small 4 stroke Honda all the time

 

[zkling]

Take the pull rope off and put a wrench/socket on the shaft to hold it while you turn the impeller

Most of the ones I've fooled with were both standard right hand threads. Usually the rope or a dedicated piston stop is the factory recommended method.

 

[bigcaddy]

Most of the ones I've fooled with were both standard right hand threads. Usually the rope or a dedicated piston stop is the factory recommended method.

That's a distinct possibility. I'm kinda running blind here with o manual, like it would help, and the fact that the part I need is discontinued and costs about 90.00.

I'll stop the cylinder and see what I can do. I might even be so busy that it will get put on the back burner until next week

 

[Outlawmws]

The threads will be so it tightens in use, so which way does the impeller go? Use an impact going the opposite way.