removed lower unit on evinrude, now not pumping? and question about lower hole

[waterpotter]

Just bought an old evinrude 2hp. Started it up and it was misting out the four telltale hole things. but it wasn't running well. noticed a small hole on the side just above and to the side of the propeller. felt some gunk in there so I took the lower unit off and cleaned it out.

Two questions. What does that hole do? It's not the four telltale holes, it's much lower on the leg and just above and to the side of the prop.

And second. I put everything back together but now i'm not getting any mist out of the telltale holes. ran across this page: http://www.fiberglassics.com/fiberg...lace/evinrude-1972-mate-2hp-not-pumping-water

and it says that some of these motors have a little plastic piece that needs to be lined up or else it won't pump. Is that true? The poster didn't actually say that all these old 2hp evinrudes have this plastic piece, just that lots of these old motors have it. I also didn't see any plastic piece.

What could have gone wrong just by taking the lower unit off?

Help!! Thank you.

 

[GA_Boater]

Welcome aboard.

Chinewalker , a member here also, wrote about the plastic piece at FG. Maybe he will see this and reply.

 

[waterpotter]

Thanks! I was actually a member here a few years ago, but I sold my boat and motor and haven't been active for a long time.... long enough to forgot my username! Oh, well. Great to be back!

 

[F_R]

What year is your motor? That spacer goes below the water pump cartridge. Early models did not have it. Did you have the cartridge out? Don't worry yourself about those drain holes (except it is good that you cleaned it out so it can do what it is supposed to do--drain.).

 

[waterpotter]

Hi, thanks for the response. I'm pretty sure it's a 1980 model. I looked at the year chart here on iBoats, but my model and serial numbers didn't actually match anything. The model number is E2RCSM, so I'm guessing I'm supposed to be looking at the CS part of the model number, and I'm not sure what the M is for but it looks like model "2RCS" is from 1980, so I bet that's what I have.

I didn't see anything resembling a cartridge. I literally just took off the pin for the prop, took the prop off, took off the plate right at the bottom of the very bottom unit, which is the drive to turn the prop and then on the back is a metal worm gear thing, and then unbolted the very lower unit and slid it out to clean the drain holes (thanks for that info, by the way).

Nothing looked out of place and it sure seemed like everything lined back up, I didn't see anything that it wasn't extremely clear where it should go and what it should line up with.

Did this 1980 units have the spacer?

Thanks!

 

[Vic.S]

Yes its a 1980 model. The M is a production suffix

Below is the gearcase parts diagram .... no plastic spacer AFAICS But I don't understand your reference to a plate or a" worm gear thing"

 

[waterpotter]

Ah sorry. that's just my bad description. The "plate" i was talking about was part 3, the worm drive thing was part 5.

So all I did was pull part 19 off (the prop) and then unbolt part 3 and pulled part 5. Then I unbolted part 6 (the actual gearcase) and pulled it off to clean the drain holes. reassembled and now it doesn't seem to be pumping.

What is part 10? that's not the spacer he was referring to, right? I don't see any little teeth but maybe. Just from looking at the part diagram there, it looks to me like part 14 is bolted down and then the impeller, as well as part 10 (whatever it is), are contained inside that little housing. I definitely didn't unbolt part 14, so I doubt it could have gotten too messed up if part 10 is indeed the spacer in question.

thanks!

 

[F_R]

Confirming, your motor has neither a cartridge nor a plastic spacer. Part 10 is the driveshaft oil seal, pressed into the gearcase housing. If you didn't remove #14, you didn't monkey with the water pump or oil seal at all. But maybe you should remove 14 and take a look at the impeller. Coincidences happen.

 

[waterpotter]

Hm. Gotcha, thanks for confirming (and for the parts diagram, Vic S)! you're probably right, it must just be a weird coincidence. Bummer.

I'll keep wrenching and post my findings. Thanks to all who contributed!

 

[Vic.S]

Hm. Gotcha, thanks for confirming (and for the parts diagram, Vic S)! you're probably right, it must just be a weird coincidence. Bummer.

I'll keep wrenching and post my findings. Thanks to all who contributed!

You should have unbolted and dropped the gearcase assembly off the leg.

Then unbolted the impeller housing #14 and slipped it up and off the vertical driveshaft #21 to get to the impeller #16 and take that out too. Look out for the impeller drive key #12 .

try not to lift the drive shaft out, but if you do be careful not to damage the lips of the seal.

curl the vanes of the new impeller up the same way as the old one ... but it will sort itself out quickly enough if you get them wrong. It turns clockwise and the vanes trail

be doubly sure you refit the drive key properly ( if you get a new one with the impeller use it)

when you refit the gearcase turn the prop gently to get the splines at the top of the drive shaft to engage in the crankshaft. Make sure you get the water tube located in the grommet #13 in the pump housing,....... Thats what you probably did not do before.