no water pumping

nzfisho · #1 (**permalink**) 12-30-2009, 07:19 PM

Hi there just replaced my impeller on a 2001 30hp, only the hub left on old one, now i cant get any water flow though motor. flushed water though water pickup pipe and though thermostat, key is in drive shaft and have run gearbox on power drill getting a weak flow from pump that way but wont pump though motor

boats.net · #2 (**permalink**) 12-31-2009, 10:07 AM

Look for broken pieces of old impeller blades underneath water pump and pickup holes in gearcase. Remove thermostat and back flush with water to see if can get any pieces come out of water pump that connectes to gearcase. Check that the tell tale hole is not plugged up.

nzfisho · #3 (**permalink**) 12-31-2009, 06:31 PM

Hi
I have done all of the above a few time all seems clear, wonder if i have the right impeller, motor serial number is 0n0 13546, quicksilver part number for impeller i got is 47-16154 1
could it be a blown gasket putting pressure into water system stopping water flow
cheers

boats.net · #4 (**permalink**) 01-02-2010, 11:01 AM

Which model 30 do you have? 2 stroke or 4 stroke, carb or EFI model?

nzfisho · #5 (**permalink**) 01-03-2010, 01:47 PM

not sure on the model number, its a 2 stroke and carb

boats.net · #6 (**permalink**) 01-04-2010, 09:19 AM

30 hp (2 cyl.) 2 stroke serial # 0G760300 thru 0T979999(USA) uses impeller part number 85089 10.
Mercury Outboard Parts 30 (2 CYL.) 0G760300 THRU 0T979999 Gear Housing(Driveshaft)(2.00:1 Gear Ratio) Diagram

nzfisho · #7 (**permalink**) 01-05-2010, 03:33 AM

Thanks for that, food for though now, have been told my outboard is an international model. Water pump in picture does not look the same as mine.
Hm take it into the shop or order the part here, where could i find the inside size of the impellers to check if they are the same
Thanks again for your help

boats.net · #8 (**permalink**) 01-05-2010, 10:15 AM

It should say on serial number tag, it says made in Belgium then it's an international model.

nzfisho · #9 (**permalink**) 01-06-2010, 12:58 AM

Thats shed some light on things, the tag says mariner 30HP, serial number 0n013546, 2001 MA 30 EL, BURNSWICK CORP, MADE IN JAPAN
So going by what you have said i have the wrong impeller, ill check out the part number you gave and see if i can get it here
Thanks again

boats.net · #10 (**permalink**) 01-06-2010, 09:39 AM

That would be the international model, here is link Mercury Mariner Parts 30 (2 CYL.)(International) 0N001875 THRU 0N055504 Gear Housing(Driveshaft) Diagram