Sorry if the title isn't clear. I'm wondering if there's any place to find a list or chart of sorts, to find compatible parts that fit on different chainsaws. The specific thing I'm looking for, is a muffler for my dinky Husqvarna 240. I want to do a MM, and am wondering if there is another muffler that would fit, from a different brand/saw that might be easier to work on. They say a 240 isn't a real husky, that it's a Poulan in orange clothing, so is there a Poulan muffler that might unbolt, rather than uncrimp? Or a made in China replacement that's less restrictive? Any thoughts appreciated.
The 240 muffler is 545180843. You can go to Kit Muffler Complete [545180843] for Lawn Equipment | eReplacement Parts and see what models it says. Only shows 240 and 235. But muffler looks a lot like 42cc strato Poulan (2006 and newer) mufflers. One of those MAY fit.
No list that I know of. Just have to know your saw families. I would pull parts lists off ereplacement onnpoulans of same size and your saw and see if the #s are same
Thanks guys, at least I have a place to start now. Maybe I can free up an extra 1/10th horsepower or more on the mule.
Ask your dealer if he is good man he help you ............. if not he tell bring the saw here ........... just saying
If those mufflers are the same as the Craftsman/Poulan models, then they really aren't that restrictive. You could carve up the baffle a bit and then open up the exit slots some but not much really to 'em. Empty cans with a baffle box and a deflector.
Tried to capture the essence, with varying success. The first photo is looking into the muffler (from the rear), showing factory holes top left/right. The next photo is obviously the front, and the last one not a very good photo of the bottom left/right from the back. The holes appear to be about .2 diameter. Is hogging out a bit of the existing holes enough to unleash gobs of horsepower?
You can certainly open up the holes in the baffle but there is an even bigger restriction in these. Look straight in the exit slots on the front, see that flange that partially obstructs both of them? Grind that clear and enlarge each exit slightly. (See areas highlighted on your photo.) Then pound the front of the deflector slightly convex to open it up a tad.
I'll start right there. I don't have the right attachment for my dremel, but I think a few holes and a small file should get me where I need to go. I never even thought about the how choked up the deflector is making everything.
MM complete, except for some tinkering to do on the front plate.. I didn't test it on wood, as it's kind of dark and apparently I have bar oiling problems crop up tonight. Seems more responsive blipping the throttle though, and holy cow.....did this little beast get noisy. Did I mention noisy? So what kind of actual power increase might one expect percentage wise, worst case to best case?
