Lower Unit Drain Plug

[danbrob]

Hi, I have a Four Winns with a 190 I/O. I want to change the oil in the lower unit but the plug is being very stubborn.

Are there any solutions to loosening this screw. Brute force has not worked so far and I am reluctant to use heat on the lower unit itself in an attempt to unscrew the plug.

Thanks in advance for your help and assistance.

 

[Bondo]

Re: Lower Unit Drain Plug

I have a Four Winns with a 190 I/O.

Ayuh,... I've never heard of a Four Winns Outdrive,..?? Muchless a Four Winns 190hp Motor,...

Stubborns screws are removed with an Impact Driver,.... Sears carries them...

 

[NW Redneck]

Re: Lower Unit Drain Plug

What year is your drive, and is it white or black? OMC (white) used a ford 302 motor rated at either 175 or 190hp. I agree with Mr B, get an impact driver.

 

[dontask]

Re: Lower Unit Drain Plug

Try taking a hand held punch and catch the edge of where a slotted screw driver would go on the drain plug and give it a strike with a ball peen hammer. Obviously driving the loosening direction for the plug. Stay on the plug as not to do damage to the lower unit casting.

 

[danbrob]

Re: Lower Unit Drain Plug

Folks, sorry for the confusion.

It is a Four Winns boat with a 190 hp Volvo Penta I/O. I will give the hand held punch a try.

Thanks for your replies.

 

[Haut Medoc]

Re: Lower Unit Drain Plug

Don't waste your time with that punch, it most likely will not work....
You can get an impct driver for $20 & do it right....
You will be surprised at how easy it will work WITHOUT buggering the screw.....

 

[dontask]

Re: Lower Unit Drain Plug

Don't waste your time with that punch, it most likely will not work....
You can get an impct driver for $20 & do it right....
You will be surprised at how easy it will work WITHOUT buggering the screw.....

35 years as a trained mechanic and I have impact drivers. Both hand held and pneumatic. It is one of the ways that have worked (many times) in my SHORT career without "buggering" up the threads of the casting that can't be easily repaired. Its also a way of directing the most amount of force in the direction that is needed which is something a impact tool does not do. If the drain screw will not work with a screw diver its time to throw it away.

 

[Haut Medoc]

Re: Lower Unit Drain Plug

35 years as a trained mechanic and I have impacts. Both hand held and pneumatic. It is one of the ways that have worked (many times) in my SHORT career.

Good for you......
At least you mentioned that there was a possibility of damage using the hacker method, kudos...

 

[dontask]

Re: Lower Unit Drain Plug

Good for you......
At least you mentioned that there was a possibility of damage using the hacker method, kudos...

I like reading your profile and all your marine & mechanic experience, it takes no time.

 

[Haut Medoc]

Re: Lower Unit Drain Plug

I like reading your profile and all your marine & mechanic experience, it takes no time.

It doesn't take a rocket scientist to know that using the correct tool makes sense.....

 

[dontask]

Re: Lower Unit Drain Plug

It doesn't take a rocket scientist to know that using the correct tool makes sense.....

I see that by the lack of your occupation profile you are neither a rocket scientist, a mechanic and very little marine experience. Now if you go back to my FIRST post concerning the question you will see the statement "as not to damage the lower unit casting". Re read it till it soaks in.

 

[Haut Medoc]

Re: Lower Unit Drain Plug

I saw that...
However, the fact that using your method, you have to caution against damage tells me there is a better option.....
The correct tool is available that has NO possibility of causing damage, what would you use?....
Oh, you all ready answered that didn't ya?.....
I guess you have been doing it wrong for thirty five years....
Thanks for playing.....

 

[Haut Medoc]

Re: Lower Unit Drain Plug

I could post a pic of the correct tool & the technique, if you think it will be helpful.....

 

[Bondo]

Re: Lower Unit Drain Plug

Originally Posted by dontask
Now if you go back to my FIRST post concerning the question you will see the statement "as not to damage the lower unit casting". Re read it till it soaks in.

Ayuh,.... I just read the Whole thread,.....
Your way will either bugger the Screw, or the Housing,.... Period....
We are advising your basic DIYers here at iboats,... Not trained Mechanics like Us....

I too am a lifelong Wrench,.... I've got Tons of them,... Literally...
Impact drivers of All shapes, sizes,+ power.... Air, electric,+ Hand Held.....
For the situation above,... A 3/8" drive Hand Held would be the Most logical Tool to reach for....
It'll remove the plug,..
Without buggering up the Screw,.. Or the Housing...

A hammer,+ punch are at Best,...
An Emergency technique to fall back on in,.. Well,.. An Emergency....

 

[1980Galaxy]

Re: Lower Unit Drain Plug

children, children... can't we all just get along?

hey bondo, i just read this whole thread as well and, quite frankly, im sorry i wasted my time reading this peeing contest haha

 

[skargo]

Re: Lower Unit Drain Plug

Calm down guys, we all do things differently.

Do you guys use perfect seal on the plugs?

 

[Haut Medoc]

Re: Lower Unit Drain Plug

Calm down guys, we all do things differently.

Do you guys use perfect seal on the plugs?

What plugs?.....

 

[skargo]

Re: Lower Unit Drain Plug

What plugs?.....

The drain and fill plugs.

 

[Haut Medoc]

Re: Lower Unit Drain Plug

The drain and fill plugs.

Sorry, I though you were funnin'....:redface:
No, they don't need it, but you should change the o rings every time....

 

[skargo]

Re: Lower Unit Drain Plug

Sorry, I though you were funnin'....:redface:
No, they don't need it, but you should change the o rings every time....

I use perfect seal in addition to new o-rings. Probably overkill.