Removing powerhead from motor leg on 1984 50HP

[tman75007]

Hi All,

Orig I thought this was a 85, but its an 84 per the model #. I have to reseat the copper tubing for the water pump into the bottom of the powerhead. Fell out while checking the impeller. I want to also change the grommet which this is supposed to seal the tubing to the motor. Side note: was told its a grommet, but parts diagrams say its an o-ring. dont want to order wrong part. Anyways.....I've removed the 8 bolts from under the plate and loosened the 2 motor mount bolts just to see if it would move any....it wont. I think the motor is stuck to the plate due to the gasket seal. I dont want to struggle with it if I've missed something else that needs to be removed. Have I removed all the bolts I need to and just need to pry the motor away from the plate? Manuals are in the mail, but wanted to work on this sooner than later.

First time doing this impeller check.....and I have branded in my brain never to let the copper tubing fall out ever again. What a pain.

Learned alot from this forum and tinkering with this motor myself. Appreciate the guidance.

 

[Frank Acampora]

Re: Removing powerhead from motor leg on 1984 50HP

I have done a couple of them and it is a miserable job. Even with all the bolts loose it just wants to stay attached. You need to use a lot of force and the correct words. And even then it is difficult. last one I did, I damn near disassembled the whole engine before it released. I had the cowling off, the motor mounts detached I was working from the bottom, the top, the sides-- Finally it released with a pop

Just don't pry on the plate itself It is thin and will snap.

 

[Nordin]

Re: Removing powerhead from motor leg on 1984 50HP

There are 8 bolts attached from the plate to the midleg. Then 2 bolts holding the block through a shockmount just under the carb and finally a long bolt under the exhaustsnout. You have to remove the snout to remove long bolt.

 

[Boatdoc58]

Re: Removing powerhead from motor leg on 1984 50HP

So true Frank ! I think they use JB Weld as sealant on some of them !! Proceed slowly and carefully and as Nordin said make sure ALL the bolts are out. I had a guy bring me one he tried to "pry" the powerhead off without getting the hidden bolt out of the front. He quite when he heard a "crack".....that "crack" was a very expensive sound he found out.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Thanks guys. Thinking to get a mini-cam up in the motor leg to help guide the tubing back in the block and by-pass the motor removal. Really wanted to check that grommet though.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Nordin, where is the ExhaustSnout you are mentioning? All the diagrams I've look at point me to the lower unit. Are you speaking about the exhaust port cover?

 

[Frank Acampora]

Re: Removing powerhead from motor leg on 1984 50HP

At the rear of Chrysler and early Force engines, there was a water outlet inside the clamshell rear shroud and held with a rubber ring. You remove the six bolts holding the shroud in place and the two bolts holding the water outlet in place. THEN, the long screw which goes up into the block is accessible.

Later Force engines did NOT have a shroud and the water exited directly from the midleg. If the shift rods are outside the midleg and accessible and if the engine is black, then there is no rear shroud or hidden bolt.

 

[Nordin]

Re: Removing powerhead from motor leg on 1984 50HP

Sorry if I use the wrong word for what I actually mean. An 1984 50Hp Force is a rebanded 45Hp Chrysler and it has as Frank says a legcover that is bolted together with 6 bolts. Under this cover there is a motor exhaust leg cover part # FA 613832 that I by mistake called exhaustsnout.
Under/behind this cover there is a long bolt that is screwed into the powerhead. You have to unscrew 2 bolts holding the motor exhaust leg cover to the midleg. Then this long bolt is accessible.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

cool, this makes sense. I had already removed the leg cover to disconnect the shift rod when I was dropping the lower unit. I know where to find the long bolt! Thanks. If the motor gives me just a little bit of a pain when I try to lift it, I'll go the mini-cam route to help guide the copper tubing back up in it. I've already ordered it from ebay for $30. But, still gonna give this a try because I'd like to put a new grommet or o-ring under there. Really appreciate all the guidance!!

 

[Frank Acampora]

Re: Removing powerhead from motor leg on 1984 50HP

Those engine blocks are not as difficult to remove as the newer Force ones. Once all the bolts are out, the block should pop right off with just a little prying. In all likelihood you will destroy the gasket between the block and midleg, so either order one or make your own--it is not difficult. Use 1/32 thick grey gasket paper.

 

[gregmsr]

Re: Removing powerhead from motor leg on 1984 50HP

What I did (probably not the best idea) when the head was stuck solid on the leg, I put some up pressure with the hoist , sat up on the side and took both my feet and gave a swift kick and it popped loose. Like I said, probably not the best method but I tried prying and the choice words first......didn't break anything....

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

removed the screw and I may have wasted my money on the mini-cam cause its moving pretty freely. i have to disconnect the throttle cables which is the only thing I can tell keeping the motor from easily coming off now. Guess I can check that grommet after all. Yes, I'll just make my own gasket...and heck...I still have to order the impeller and maybe the grommet. Feeling pretty good now! Thanks!!!

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

almost there, motor can be lifted up in the back and can wobble it left to right, but it will not lift up in the front. I wobbled it to make sure the seal wasnt still on the front end. But that isnt the issue. Is there something else? What else under the carb area is keep it from lifting? Shift rod is disconnected. Wires are disconnected. I've come so far and dont want to break anything.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Got it off. I had orig removed the screws from the to side mount under the motor on each side. These didnt need to be removed. What was holding it in the front was to bolts under the carb which was another rubber motor mount. This is the almost square one. Its off!!! Opening another thread, as the place where the copper tubing goes there is no grommet, actually doesnt look like a gromment goes there or was there. One or the other.The tubing will go deep inside where this initial hole is. Wondering if the place it goes is further up into this small hole. Thanks again guys!

 

[Nordin]

Re: Removing powerhead from motor leg on 1984 50HP

I have checked at ishopmarine.com and there is no grommet. There should be a seal part # F40342 and a plainwasher part# F8042 at the top of the coppertube. Seams these are N/A but check with Franz Marine he may have them if they are N/A.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Thanks. I've found the parts online as well. But, I just dont see how its gonna fit snug in the hole I see. I see references to this "seal" part along with equiv parts which they say are o-rings. There's no way an o-ring is going to seal that snug. The port where this tubbing fits into the motor isnt facing straight down, its on an angle and some of the area around the opening isnt level. Guess I will order this "seal" anyways. Just unsure about how some descriptions say its an o-ring. Gonna order it anyways. Then the next challenge will be how to get the tubing into the motor AND deal with that angled copper tubing in the leg. Oh yeah, one more thing.....I have not even seen the ones that were supposed to already be in there. All this adds to the confusion.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Just got off the phone with Franz. Great guy! Guess the seal is indeed and o-ring and the tightness of the seal isnt airtight. I dont think this motor had one, or the washer. I didnt see it laying on the ground when I took the lower unit off. But, it could have rolled under my benches. He also gave me advise how to get it all back together. Thanks again so much. Everyone has been very helpful. I look forward to being able to contribute to helping someone if I can. My knowledge is limited, but feel I've learned alot.

 

[tman75007]

Re: Removing powerhead from motor leg on 1984 50HP

Once I removed the spacer plate I could plainly see the o-ring and washer. I see where the tubing goes. Removing the spacer plate was the final needed step I didnt take.