New Muffler for a 1996 MTD 20 Ton Splitter H/V 5 HP

The old one finally developed a hole in it so I want to replace it, they gave me a replacement number of BS 691969, is this the correct one?

I looked at a video of someone changing out a newer style muffler, are there any videos on changing out the old ones.

What can I expect when taking off the old one?
Briggs & Stratton Super Lo-Tone Muffler - 691969

I'll get a picture tomorrow of the one that's on it.

 

IME, those 5 hp horizontal Briggs can take a ton of different muffers. Here's another one for less. B&s brand even.

Briggs and Stratton 496892 Super Lo-Tone Muffler

 

Or this one? This is basically what we have on our old 5 hp Briggs splitter. Pipe thread...

Muffler | Part Number 393010S | 365 DAY RETURN POLICY from Sears PartsDirect

 

So basically you either have a screw in type, with pipe threads, or a 2 bolt flange with a gasket.

Report back and we'll walk you through it.

 

Thanks Horkn, I'll get a picture tomorrow and post it.

 

You may even have both types of mounts.

 

I went in today and bought the muffler from the Wood Chop Shop, I also picked up some Anti-Seize for the new studs.

I sprayed the old studs with some PB Blaster which I'll do again tonight and another shot tomorrow morning.

 

Here's a couple pictures of the old muffler and the new one I bought. In pictures 9822 & 23, it looks like you have your choice of what part you want to put on the face of the muffler.

If I choose the one that shoots the exhaust straight out, is there any other difference in the two, will one make your engine run cooler?

 

Every air flow restriction or change of direction will reduce power a tiny amount because it takes power to move the exhaust though a more convoluted path. If the exhaust is properly "tuned" to the engine at operating speed the effect may be none at all. Exhaust tuning is something we seldom address on things like a chain saw except when you are running a race engine. Ever wonder why those race engines have a large expansion chamber on their exhausts?

 

On a 2 stroke, those expansion chambers are for a little different reason. A 2 stoke will puff back, because it has no real valves in the head. A 4 stroke has intake and exhaust valves that don't allow back flow. It's the whole 4 cycle vs 2 cycle thing.

You won't see expansion chambers on a 4 stroke.


Back to thewoodlands question though, try them both out. There one with the diverter can be used to keep hot exhaust away from the components of whatever the motor is used on. That diverter can also be used to keep water from flowing into the motor or muffler during a rain storm.

 

Well 1 for 2 is good when hitting in baseball, the first bolt broke and the second came out real nice, I have the new muffler on it with the new bolt stuck inside the hole where the bolt broke off and the other one holding down the fort.

It seems fine when running it but the Wood Chop Shop is hunting down a threaded muffler, B & S don't make them any more.

 

Horkn , MasterMech , my model # is 135202, would this fit?
Muffler for Briggs and Stratton 393010S 393010 390249 | 105163

My model number isn't listed but the engine size is.

 

135200 is listed as a fit. It should fit. Just be mindful of carbon in the threads. You could always try removing the broken stud from the head.

I think it's literally just a pipe thread.

 

I even heated it up with a torch, it won't budge.

 

That sucks. At least there's a secondary way to mount a muffler.

 

Try an easy out maybe? But I doubt that will work since its seized