1966 evinrude 33 hp motor

[Dennishazard]

Is there any videos out there for changing the impeller for a 33 hp evinrude motor ?
Thanks

 

[Joe Reeves]

Video not needed... very simple.

DO NOT even think of removing that philips head screw from the lower unit skeg. That is a long pivot bolt for the internal shift lever!

Remove small plate (2 screws) from side of long exhaust housing between powerhead and lower unit.

Remove just "One" 3/8" head bolt from the brass shift connector!

Remove the retaining bolts (7) from the lower unit.... Drop the lower unit.

Use heat applied to the aluminum area surrounding the water pump retaining screws if needed to help loosen them (hand help propane torch).

Use gasket sealer of some kind between the plate and lower unit and also the impeller housing and the plate when reassembling the pump.Bombardier 3M Product #847 is my preference (at your dealership).

It doesn't matter which way you turn the impeller when you install it in the housing... the engine corrects it as soon as it starts to crank over. Apply some grease within the tube grommet of the housing.

When installing the lower unit, have the lower unit in gear so that you can turn the propeller to turn the crankshaft splines to align them with the crankshaft splines.

Make absolutely sure that the groove on the lower unit shift rod is aligned with the threaded hole of the brass shift connector before re-installing that 3/8" connector bolt. Reinstall that small plate... that's it!

 

[Dennishazard]

Removing the 3/8 bolt is it the top one or bottom ? What do you mean by having lower unit in gear ?
thanks dude

 

[racerone]

Either one , it matters not.

 

[Johnson110]

Bottom 3/8 bolt in bottom of brass coupling, shift motor in forward gear so you can turn prop to get the splines on drive shat to go into power head.

 

[Dennishazard]

There are two sets of bolts on two different parts a lower one and top one, which do I remove to get to the impeller

 

[racerone]

The motor has a spacer to make it a long shaft.-------After you do this impeller work you will say " that was easy " ----Do not worry or overthink this project.-----Try the lower set of screws and see what happens !!

 

[hardwater fisherman]

You said in your other post you have a service manual.. It should explain in detail how to change/service the water pump.

 

[Dennishazard]

Got all bolts out, but appears to be something coughs up inside the motor

 

[Joe Reeves]

Removing the 3/8 bolt is it the top one or bottom ? What do you mean by having lower unit in gear ? thanks dude

Remove the bottom bolt... that'll leave the top bolt and the brass shift connector secure and in place.

By "in gear", I mean just that. With the lower unit on your work bench, push down on the shift rod, spin the propeller as you do to align the inner shift dog lobes with the gear lobes. You'll feel it click in. Now if you turn the propeller, you'll notice that the driveshaft will also turn.

With the lower unit in gear, this setup makes it easy to align the driveshaft splines with the crankshaft splines. If you don't do this, the only way you can align the splines is to turn the flywheel.... and that is a PITA when you're at the other end of the engine.

I might mention to be careful to get that water tube aligned so that you're sure it's entering the greased water pump grommet. You'd be surprised how many make that goof and end up bending the water tube.