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Pebbles in muffler-3120

Rosss

Rosss

ArboristSite Operative
Joined
Sep 18, 2017
Messages
200
Age
52
Location
Alberta
Some time ago I bought a used Husky 3120.
I was low on sleep and didn't check it out as well as I might normally.
I got it home and found the muffler was loose. I removed the muffler and found it had a rattle in it when shook. I tipped it and 6 to 8 small pebbles came out. They ranged in from bb size to just smaller than a dime in diameter.

I didn't know what to make of it and put the saw aside to sort out later.

The saw was run as part of buying it.

Do I need to take some preventative action, such as disassemble the saw to make sure nothing has gone into the cylinder?
The saw was also missing the exhaust gasket.

Thanks
 
JeremiahJohnson

JeremiahJohnson

Redneck Chainsaw Repair
Joined
May 11, 2012
Messages
6,752
Location
Ohio
I had a 290 come in that a muffler had come apart inside and the guy had run it for awhile like this. Had these little metal round deals too. None as big as a bb though. Tiny little guys and a bunch of them.

I'll go check and see if I have pic saved on my website.
 
Rosss

Rosss

ArboristSite Operative
Joined
Sep 18, 2017
Messages
200
Age
52
Location
Alberta
They were actual rocks. Round pebbles.

I didn't get a pic, put them aside and can't find them now.

Piston looked ok. I compression tested it at the time I think it tested 150 ish.

I will check on the spark screen to see if it was removed.
 
Bob Hedgecutter

Bob Hedgecutter

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Jul 18, 2019
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Small Town, way down South- New Zealand.
Maybe the saw had been through a flood, picked up some pebbles whilst bouncing around a pickup bed, rolled down a hill face picking up a couple of pebbled on the way, fell off a skidder/tractor/atv.......

Guessing there was no spark arrestor screen and pebbles were free to access through the exhaust port, into the muffler box and sat there to rattle around in a cheap form of rock polisher.
 
Old2stroke

Old2stroke

Never too many toys
Joined
Jan 24, 2016
Messages
580
Age
78
Location
Ottawa, Canada
One of the tricks to clean out a clogged muffler is to heat it up is a barbecue until the gunge turns white, then put some rocks in it and rattle them around to break up the resulting crud, then shake out the rocks and blow the muffler out with compressed air. Is it possible this was attempted and all the rocks weren't completely removed?
 
Rosss

Rosss

ArboristSite Operative
Joined
Sep 18, 2017
Messages
200
Age
52
Location
Alberta
The muffler still has the screen in it.
The muffler was loose and missing the exhaust gasket when I bought it.
 
Bob Hedgecutter

Bob Hedgecutter

Addicted to ArboristSite
Joined
Jul 18, 2019
Messages
1,024
Location
Small Town, way down South- New Zealand.
One of the tricks to clean out a clogged muffler is to heat it up is a barbecue until the gunge turns white, then put some rocks in it and rattle them around to break up the resulting crud, then shake out the rocks and blow the muffler out with compressed air. Is it possible this was attempted and all the rocks weren't completely removed?
Or they were intentionally left in there to rattle around and dislodge any carbon build up as the saw in use.
 
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