OMC Cobra water pump

[highrocklake]

Vmax,
I have a 1987 omc cobra 3.0 on which I have replaced circulation pump, thermostat, Impeller twice. My problem is It doesn,t seem to pick up water to impeller. I don't mind doing the work but there is a complete lack of video on Youtube about the process and the Manuel is very vague. Any helpfull hints on removing the foot to inspect the screen or water pickup tube?

 

[Bondo]

Ayuh,..... I gave you a thread of yer own, rather than the 20 year old thread you hy-jacked,....

How are you feeding water to the drive,..??
A big bucket won't work,....
You need a quality set of muffs,.....

 

[Scott Danforth]

welcome aboard.

as indicated, if trying to suck from a bucket, you will just burn up the impeller. you need muffs. if you want to use a bucket, get a bucket big enough to put the whole boat in it so the impeller starts with water 8" above it to prime the pump.

factory manual is a great thing. if you are using a clymer, Haynes or seloc manual, they are not worth the paper they were printed on.

OMC went out of business long before youtube was a thing

 

[highrocklake]

Thank you both, I am putting it in the water tomorrow if not to cold

 

[Scott Danforth]

Thank you both, I am putting it in the water tomorrow if not to cold

I woul replace the impeller if you tried to suck water from a bucket. 10 seconds without water and the impeller is toast