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According to my notes, I ended up using Honda impellers in the two 7.5 hp bail-a-matics
I worked on. I blanked the bailer pump, and just used one impeller in each motor.
I tried other impellers as well that some people said worked, but not for me.
The part number I show was…….. 19210-ZW9-013Some people epoxied a Honda liner into the Scott pump housing, but I was not
able to find where anyone sold “just” the liner, so I added brass sheet
on the walls of the original liner to reduce it’s diameter, so the Honda impeller would pump
nicely.My notes……
Installed a .035 brass liner inside of the
current water pump liner to use the Honda impeller,
and made a new brass cover plate on pump.
Pump cavity ID was originally 1.685, depth .600
Pump cavity ID with brass insert is 1.632,
.053 smaller than original.
Honda impeller specs – OD 1.785 x .585Prepare to be boarded!
Thank you Buccaneer for the great reply! How did you blank out the BOM impeller so you are only down to one impeller?
I blanked off the bailer pump by fitting an aluminum
“hockey puck” like piece in the cavity (not a photo of my motor)
like in the photo.
A photo of my pump with the homemade brass liner on the sidewall of the
pump cavity.
Regarding the O-rings, I measured the size I needed, and found some
very close on EBay……. can’t remember how they worked out,
and I can’t find a part / size number.Prepare to be boarded!
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