how to disconect shift linkage on 1970 evinrude 33hp ski twin for impeller replacment

[mlarson29]

hi im looking to replace the impeller but am not sure where on this motor the screw or bolt is to disconnect the shift rod linkage. any help appreciated

 

[jimmbo]

On the midsection about 5 inches or so above the gearcase/midsection separation line, there is an small cover with 2 screws, the connector is behind it.

 

[mlarson29]

On the midsection about 5 inches or so above the gearcase/midsection separation line, there is an small cover with 2 screws, the connector is behind it.

well that did the trick but i still cannot get water to shoot out of the motor. i think it mat be gummed up in the water lines. do you know of a way to clean it out?or how to clean the filter on the bottom.

 

[jimmbo]

What exactly are you trying to do?

 

[mlarson29]

water wont come out of the engine. . replaced impeller and still wont shoot out of the port. there was rubber in the lower unit when i replaced the impeller and still wont shoot water. now i cannot get the thing to shift out of forward.

 

[jimmbo]

Rubber in the lower unit? Shoot water? Are you trying to say the old impeller was broken into pieces? Is the rubber grommet on the water pump outlet intact? How deep in the water are you lowering the motor to test? The stuck in forward... did you take the gearcase apart?

 

[mlarson29]

did not take the gear case apart. rubber may just be dirt from crappy water at lake. im thinking i must have moved the shift rod when installing. impeller was intact and water pump grommet was intact and had a tight seal when i put it back on. but still wont get water out

 

[jimmbo]

when you are testing, did you submerge the water pump at least 4 inches?

 

[jimmbo]

When you disconnected the shift linkage, did you remove the bolt completely from the coupler? It needs to be out so during installation you can see when you inserted the rod far enough

 

[oldboat1]

I'm thinking you didn't get the shift link installed correctly, or you are not manually rotating the prop a little when shifting to get the gears to mesh. I also don't think the '70 has a tell tale -- if so, some water out of the exhaust port is what to expect. But if you aren't getting water up there, pull the l.u. again and try flushing up the water tube (engine off). Rig something to fit over the tube. If you have pieces from an old impeller lodged up there somewhere, or some kind of other debris, you may need to take off the head and exhaust covers to clear passages. Try flushing first.

 

[mlarson29]

OK so should I connect it straight to the copper tube coming from the motor head?

 

[oldboat1]

yup. Rummage around for something to fit -- maybe part of one of those hose quick disconnect units -- something to step down the diameter. Don't blast the water up there, maybe half pressure or so.

 

[mlarson29]

well she worked. i crushed the rubber that connects the copper pipe to the water pump. thanks for all the help.

 

[oldboat1]

Happens. Glad you found it.

 

[mlarson29]

HI there. Boat is pumping water like no tomorrow but I'm out on the lake as we speak and have no gears lm goes forward and that's it. No idea what's wrong.