'78 merc 75 water pump and carb problem

tysonb

Cadet
Joined
Jul 11, 2011
Messages
12
I have a '78 mercury 7.5 hp (merc 75) and is having some carb and water pump problems. When I get
The motor running it is hard to get it to stay running. I have to keep playing with the throttle and when I put it in gear it seems to want to lose power and die after a bouple of seconds. And the motor won't
pee. I back flushed it and water came out by the prop where it is supposed to. How hard is it to change
out the impeller and housing or is there anything else I should look for. Thanks for reading hope you guys can help.
 
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