7.5 gamefisher leaking lower unit oil???

[gamefisher84]

Hi i just recently bought a 1984 sear gamefisher model number 217586751. I was very excited to use it. My very first motor. But then i realized there was a milky white liquid leaking from the small holes near the gearbox(not the exhaust holes). It smelled like the lube that was given to me so i assume thats what it is. so i printed out the diagram of the motor, thinking maybe its a bad seal somewhere that needs to be replaced. I start workin on it a little and start trying to remove the bottom part (the gearbox area ...notsure of the right names and terms). i could only get it to slide about half an inch down and i was afraid of forcing it and breaking or bending something so i stopped. can anyone help me with this problem becuase im pretty bummed out that i cant get my very first motor in the water. Here is the link to the diagram of what im talking about.
http://www.searspartsdirect.com/par...00053557/00005?blt=06&prst=0&shdMod=217586751

 

[narwhals]

Re: 7.5 gamefisher leaking lower unit oil???

there are a couple different types of lower ends on your unit, some motors are equipped with a non-shifting lower unit while others are equipped with a full gear shift lower unit or forward neutral lower unit if you let me know which one you have i can walk you through it as i currently just did my 9.9 last fall and they are very similar.you may have a full shift which you have to remove the inspection cover for access to the shift linkage screw which if not disconnected that will give you the hangup you are referring to. be very careful removing the shift linkage screw as not to drop it other than that if everything is disconnected usually a couple of taps with a rubber mallet should free it up for you.

 

[bjbmedic]

Re: 7.5 gamefisher leaking lower unit oil???

Are you trying to take apart the gear case or remove the whole lower unit? In addition to the screws holding the lower unit to the upper I am sure there are some shift arm connections that need to be taken apart before you will get that off. The milky fluid you describe sounds like the gear case fluid to me and would indicate that it has gotten some water into it. In my two motors it always looks like this but it has never caused me any trouble from it. I can understand your disappointment about not getting in the water with it but you should really inspect a motor when you get one, especially a used one. There are a number of things to check before you try it in the water. I myself like to drain the gear case, pull off the lower units and inspect the gears. Obviously if they are in really bad shape you trip to the water will be very short lived and frustrating. I also usually test a motor in a barrel before trying it in a lake. Did you get to see it run before you got and and do you know its history? If its sat a while you will probably need to do a carb rebuild and at the minimum replace the water pump impeller as those are two things that are important but luckily very easy to do. YOu will find that the more you inspect it and try to understand how it works the more you will be able to diagnose problems with it and fix them. Its quite a lot of fun for me actually. Good luck and Im sure you will get much more info from people who are better at this than I am
B

 

[gamefisher84]

Re: 7.5 gamefisher leaking lower unit oil???

i aprecciate all the help.
NARWhals: i have the lower unit that has forward and nuetral. The inspection cover is the little door that has two screws in it and behind it some kind of bolt correct?ok so i have removed that bottom part by undoing the screw behind the little door. what do i do next? and im not really sure of what all needs to be replaced.

 

[gamefisher84]

Re: 7.5 gamefisher leaking lower unit oil???

BJBMEDiC: i am just trying to take apart the gearcase. i dont think i need to remove the whole lower unit. yes you are correct i missed one of the screws that need to be taken out. Yes the motor runs very nicely and kicks into gear fine. The carb has been rebuilt right before i bought it. And yes i think i might as well replace those parts while i have it taken apart and everything. But from what ive been told and have read this motor is air cooled but i believe the lower unit still pumps water to cool down the gear case and everything. so should the impellor be in the same area that im taking apart?

 

[MahtyMaht]

Re: 7.5 gamefisher leaking lower unit oil???

The upper seal of your lower unit is gone. The screw you see under that two screw inspection plate is a shift linkage agjustment, and you have to pull that screw to get the lower off. If you want to change the water pump impeller, you will be taking that lower off. If you want to replace the seals in the lower, it's gotta come off. Take a look here;

http://www.searspartsdirect.com/par...7/1305320/00053557/00005?blt=06&prst=&shdMod=

Then take look here;

http://www.boatsportandtackle.com/servlet/the-ESKA--dsh--Sears--fdsh--Ted-Wms/Categories

Pulling the lower unit is not hard, and if you can get the upper seal out without having to remove the vertical drive shaft, then you won't have to worry about the needles falling out of the two bearings it goes thru. Pulling the propshaft is not difficult either. Don't miss the third snapring between the gear and the clutch dog.

 

[gamefisher84]

Re: 7.5 gamefisher leaking lower unit oil???

so are you talking about number 12 on the diagram? and how do i go about removing it without pulling the driveshaft out?

 

[gamefisher84]

Re: 7.5 gamefisher leaking lower unit oil???

wont let me message u back...
i dont know how to remove the seal on the shift rod thing

 

[MahtyMaht]

Re: 7.5 gamefisher leaking lower unit oil???

That's affirmative on the # 12 That's the seal that's leaking thru the water intake holes. To get it out, ya gotta pull the lower. Take the bolt (#20), out of the linkage under the two bolt inspection plate, pull the bolt at the front of the lower, just above the big flat horizontal fins on either side of the lower, (AKA the anti ventilation plate), and the bolt, (# 28). Lower ought to come off. Then, you'll see rthe water pump housing, (#9), held in by two nuts, (#4), yank'em. Pull the impeller all the way up off the driveshaft, and don't forget to clean it up first. Then pull the bottom part of the impeller hopousing, (#11). The little black ring under that impeller housing is the seal in question. The face of that thing is where you want to punch with an awl. you only want maybe a 1/16" to 3/32" hole in it. Just big enough that a sheet metal screw will start in it. Get a good bite with the screw and a screwdriver, and stop. Clamp the vice-gropes on the head of the screw, with the handle of the vice-gropes horizontal, then shock upward with the hammer on the vice-gropes. You don't need a large hammer. The seal ought to pop right out. Then you lubricate the driveshaft with damned near anything that prevents a dry run down the drive shaft with the new seal, and when the seal hits the top of the lower, you drop a pipe or 1/2" drive socket down over the driveshaft, and either clamp the pipe, or set the jaws of the vice gropes too small to go down over the socket, and hammer it down till it seats. At this point, you could re-install it and run it around an hour or two, then drain the oil, and see what color it is. If it has water in it, snatch the prop shaft, and replace the seal for that, (# 31).