water pump on 1971 6hp evinrude

[rkaib]

I have what the marine shop told me was a 1971 evinrude fisherman. I can not locate where to disconnect the shift rod so I can drop the lower unit to replace the water pump. Do I have to remove the powerhead? There is no exhaust housing plate to remove. The only numbers I can find is on the S/N plate which reads 6102G-J15131. Is this really a 1971? Thanks in advance for the help.<br /><br />Rob

 

[ranger69dv]

Re: water pump on 1971 6hp evinrude

I dont think the marina was straight with you. By my figures thats a 1973 sea king. good motor but not a fisherman. Usualy when they get that okd its about time to use it as an anchor.

 

[rkaib]

Re: water pump on 1971 6hp evinrude

Maybe I should have mentioned that the S/N plate does say evinrude and it has the fisherman hood as well. The marine shop used the S/N # to ID the year.

 

[sandquino]

Re: water pump on 1971 6hp evinrude

I'm having probs with the pump on my own motor but I know how to get to it.undo 4 bolts on lower unit (water pump is down in here) pull lower unit down.it only drops about 12mm. Moving gear lever some times helps it drop.There should be just enough room to get a screwdriver in to loosen screw on brass connector rod. pulling lower unit down it should come off and water pump will be revealed

 

[Boatdood]

Re: water pump on 1971 6hp evinrude

You will need to pull the power head to get to the gear shift connection. It's really not much to it though. You'll need a base gasket for the power head though. When you get it off the shaft will be easy to get to and have two jamb nuts on top of it. Your model number does tell you it's a '71 6hp.

 

[Bear 45/70]

Re: water pump on 1971 6hp evinrude

Yeah, for a few years there John-rude had some real smart engineers who thought their motors would never break or wear anything out. Hence the power head removal to drop the lower unit.

 

[jay_merrill]

Re: water pump on 1971 6hp evinrude

If the motor is a 1971, you do not need to pull the powerhead. This is why having a factory manual is so important, if you don't know the motor you are working on intimately. If you don't have one, I suggest getting one asap. They can be purchased here at iboats, or through other web sites.

There is a standard shift rod connector (Part #303794) in your motor but there is no access plate, as is found in the larger OMC motors. To get to the connector, remove the four bolts that secure the gear case to the exhaust housing. You will then be able pull down on the gearcase, separating the two by a half inch or so. As Sandquino correctly stated, that will be just enough to get a screwdriver or 1/4" drive socket (you can use either) into the space, for removal of the screw. Remove the screw completely because the rod has an indented end, which the screws enters. I usually remove the lower screw.

If the gearcase does not want to drop, it may be because of the pin the is located at the top of the driveshaft - you will not be able to see this pin, which is there to hold the driveshaft seals in place. If the pin is not lined up with a slot that is molded into the top of the exhaust housing, it won't drop, so you will have to rotate the driveshaft until it does.

 

[jay_merrill]

Re: water pump on 1971 6hp evinrude

Duplicate Entry - Mods Please Remove.

 

[Boatdood]

Re: water pump on 1971 6hp evinrude

Since Sandquino just removed his gearcase and it's been years since I've done so I'd bet his memory is better than mine. I simply cannot remember any year model six hp OMC engine having the disconnect down there though. I know the 9.9 and 15hp's did. Oh well. That is a great little engine though. I've still got a 5 1/2 hp Johnson that runs like a top. I pulled the power head on that little rascal just a couple of years ago to replace the water pump, but I think it's a '64 or so. If you use it in salt water or sand though pulling the power head isn't such a bad idea. Those little water passages have a tendency to get stopped up and fool you into thinking it's a water pump problem.

 

[jay_merrill]

Re: water pump on 1971 6hp evinrude

OMC went to the 6hp in '65. It still used the gearcase from the 5.5hp models, but went to the split gearshft rod. The '65 is sort of an oddball, because of the older style gearcase. It used the pin drive with the shearpin at the aft end of the prop, right next to the cotter key, and the spring recoil shock relief system between the driveshaft and the pinion gear.

Your 5,5hp motor does require powerhead removal to drop the gearcase. While kind of annoying, doing so really isn't all that big of a deal unless the bolts are frozen.

 

[jay_merrill]

Re: water pump on 1971 6hp evinrude

IThe only numbers I can find is on the S/N plate which reads 6102G-J15131. Is this really a 1971?<br /><br />Rob

6102G is a 1971 Evinrude model number. The model numbers for that year were 6102E, 6102G, 6103E & 6103G.

J15131 is most likely a serial number for a Johnson 6hp. If you got that number off of the welsh plug on the starboard, rear side of the powerhead, it indicates that someone replaced the original powerhead with one off of a Johnson motor. This would also be evidenced by an original paint color on the powerhead of either white or forest green. If this is the case, however, it really doesn't matter because the two powerheads are mechanically identical.