By Bruce on Unrecorded Date: Edit

I am going to replace my oil drain plug on my briggs Vanguard (18 horse power) with a petcock style valve. Since I want to do this all as one process (ie. pull plug, change oil, replace with new plug) I would like to know if anyone can tell me the size and thread pattern of the drain plug. That way I can purchase the correct size and do this in one operation. Is it pipe thread and is it 1/2 inch, 7/16, etc...???? Thanks all.

By david berger (Davidrrrd) on Unrecorded Date: Edit

some folks on rt6x6 have done this mod,
it's a great idea.
and now beleve it or not the factory has what you need.
call them, or reserch the archives,

By Bruce on Unrecorded Date: Edit

Hi David,

thanks, I did search the archives and could not find the information that I needed. I don't want to order it as I can go to the parts store and pick it up and change the plug today...rather than wait for the parts to arrive. I just need to know what size and thread pattern are on the drain plug so I can purchase the correct replacement.

thanks again for your response.

By briggsman on Unrecorded Date: Edit

Bruce,
3/8-18 NPT

By newmax on Unrecorded Date: Edit

any ideas of how to get a striped oil drain plug out of a 18 hp briggs

By argogeru on Unrecorded Date: Edit

newmax,
drill it and then use an easy out to remove it. Most hardware stores with tools sell easy outs. good luck.

By bruce on Unrecorded Date: Edit

briggsman, thank you!! That is the information that I needed.

Bruce