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TMK

01-26-2006, 05:01 PM

Hi guys,
I am having a little trouble here, and I was wondering if one of you guys could help me. The muffler on my Briggs & Stratton 289707 vertical shaft 12hp engine is quite rusted, in particularly near where it "screws" into the engine. I need to get the muffler off, but i cannot get it off. It is not one of the mufflers that bolts on to the engine, but rather is threaded at the end and simply screws into the engine. It there any way to get this off without damaging the muffler and the engine? Thank you :)

Bruceman

01-26-2006, 05:03 PM

Run the engine until it get good and hot, then using a big pair of vise grips or channel locks take it off.

Bruce~

mark777

01-26-2006, 07:00 PM

Ditto on what Bruce said...It is probably a 1" pipe nipple and it took me a medium sized pipe wrench (14") and small 1/8" turns.

glenn27

01-26-2006, 07:42 PM

Yep-these guys are 10/4...but some of the old engines also had a locking/flange nut on the threads (you'd see if if so), to help w/ vibrations..

Douse her down good w/ penetrating oil( NIGHT before) then start up and run, like they said, and as soon as shut off--get on it with the grippers!!

P.S. A good 8" pipe wrench set "just right" (measured B-4 hand) works wonders, too..
Good luck-

Ohioplowboy

01-28-2006, 10:52 AM

I reccommend getting it red hot with a torch and using a candle on it..the wax will follow the threads and it will loosen. Never had it fail me yet..

TMK

01-28-2006, 11:54 AM

Thanks guys, i'm gonna try out those ideas today. :trink39:

Mack Trucks

01-28-2006, 03:15 PM

I reccommend getting it red hot with a torch and using a candle on it..the wax will follow the threads and it will loosen. Never had it fail me yet..

You melt a candle on the bolt and and the wax runs into the threads? Is that what you are saying happens? I have never heard of that before :cool:

Ohioplowboy

01-28-2006, 06:37 PM

Yes, thats what happens, though you actually want to heat the part you are NOT removing in this case, assuming its a cast iron block...

It works particuarly well on rusted fast manifold nuts, that are on studs, etc, where you're able to heat the nut and then apply the wax. It works, try it sometime.