BF35 water pump

[Mc Tool]

As previously mentioned in another thread fishing trip cut short when pee stream failed to perform .
I did run it on the muffs but , also previously said , it doesnt go so well on the muffs but works in the water , something I had put down to not much water pressure on the hose and muffs not sealing well and that extra inlet on underside of cavitation plate , so when a bit of water peed out I called it a good un and went fishing .
Started the motor in the lake expecting the thrust from the pee stream to push the boat forward ... but no , all I got was a dribble and some steam followed by the shrill sound of ....... you all thought I was going to say the overheat alert but no , although that did come shortly after , it was Di shrieking about being able to see the bottom which we then contacted ....which then lead to the wet nuts

As you can see the impeller housing is warped , pic doesnt really show but there is nearly 2mm gap in the middle . This impeller housing and the pump base ( also holds drive shaft oil seals ) which are plastic look like they have got very hot at some stage as they are both miss-shaped .
With the benefit of hindsight I think this has been an issue sinse before I owned this motor . I had a pump kit on hand but not the base which is supposed to be here today . Im keen to see the difference with an all new pump .
The thing that pisses me off is that I have twice previously held that impeller housing in my hand and didnt see that it was damaged
Whoo hoo just got the txt the part is in town ..... see ya

 

[Mc Tool]

Well after fitting the new bits , basically the whole pump assy, the bastard thing was no better . 1st pic is the impeller housing with the rubber gromet thing for the tube that takes water from the pump up to the motor , 2nd pic shows it fully home . 2nd pic also shows the impeller housing has got so hot it has started to carbonise the plastic , also shows where the stainless liner has melted into the housing.
After assembling the thing for the 2nd time without success I got to thinkin that when I blow compressed air up that tube I get lots of air out the pee tube and out the t/stat housing....so not blocked . As I checked the end of that tube ( to make sure it couldnt move out of position ) I noticed the end had a big burr around half its circumference , so I gets the impeller housing with the gromet in place and try to push it over the end of the tube .... no go so I puts my palm over the housing and give it a good shove ,it pushed the gromet out against my palm ...................and the gromet folded in on itself and blocked the pump outlet . Problem solved . I give that tube end a wizz with the dremel sanding drum , nice smooth rounded edge where the burr was ,put the thing together noting that it was now easier to seat the gearcase , chucked on the muffs and it pissed like never before . That burr has been there since new and , again with the hindsight this pump has been borderline the whole time I have owned the motor ......probly why the last guy sold it .While running I cracked the t/stat housing and got a good spray of water . Yee ha !