Yamaha f40 water pump not pumping. Already replaced water pump impeller kit.

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,092
If you are testing in a bucket the water needs to be 6 or 8" above the impeller.-----I think these pumps are very simple .---Almost impossible to put them together so they do not work !!
 

Daatw

Recruit
Joined
Oct 11, 2020
Messages
2
If you are testing in a bucket the water needs to be 6 or 8" above the impeller.-----I think these pumps are very simple .---Almost impossible to put them together so they do not work !!
The shaft is too big to get on my drill Was useing ears to run.
 

robert graham

Admiral
Joined
Apr 16, 2009
Messages
6,908
Have you checked the pee hole for obstructions?...try a piece of monofilament line like a weedeater line......spiders and bugs love to crawl up in there to build nests that plug them up....
 

mike_i

Ensign
Joined
Jun 28, 2017
Messages
947
is there water coming out from the pisser? If not you have water pump issues. If the motor is pissing have you checked the thermostats? What was the situation before you replaced the pump?

I have replaced the w/p kit already still not pumping out exhaust
 
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