mercury 200 1968

N

Nicola

Seaman Apprentice
Joined
Sep 30, 2008
Messages
46
Hi I was trying to help out a friend to change oil on crank case lower unit,
because they didn't winterize it properly last year but I notice that vent plug
It has been damaged from trying to remove it...
The opening in the flat head screw where the screwdriver is suppose to fit it is not strait anymore but chewed away from using I guess to small of a flat screwdriver...
How can I get to unscrew the plug without damaging the threads??
Ps I think I have the right year this is the serial number for the engine
Merc 200 2435874
Thank you in advance
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: mercury 200 1968

Use an impact screwdriver to remove it, Nicola. Use a new one when you are done.
 
N

Nicola

Seaman Apprentice
Joined
Sep 30, 2008
Messages
46
Re: mercury 200 1968

TY for the prompt answer I will try...
Was I correct on the year of the outboard???
Peace out!
 
N

Nicola

Seaman Apprentice
Joined
Sep 30, 2008
Messages
46
Re: mercury 200 1968

Well I had no luck on the impact screwdriver now the head of the flat screw half is gone??
What can I do!!!
Did anybody try the easy out kit and how do you do it
 
7

7920hpMercury

Petty Officer 2nd Class
Joined
Mar 13, 2009
Messages
111
Re: mercury 200 1968

These can be a pain, particularly if a 300 gorilla tighten the screw!

Impact screwdriver is great suggestion, try PB blaster, and get a screwdriver blade the full width of the screw head. tap, soak, tap, soak many many times, drilling this out will not be a lot a fun and a last resort for me. You might try a dremel tool with a cutoff wheel to cut a new screw slot too, watch the housing though. A LITTLE heat from a propane torch might help as ss screw and alum with expand differently (I would take the top screw out to vent the housing first).

Good luck!
 
You must log in or register to reply here.
Top