Chris J.
Addicted to ArboristSite
I was digging around in my utility room and came across a 3400 that definately wasn't a shelf queen. At some point somebody had done the "keep drilling holes" muffler mod.
Nik's Poulan Thread
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I was digging around in my utility room and came across a 3400 that definately wasn't a shelf queen. At some point somebody had done the "keep drilling holes" muffler mod.
blk05crew
I like 'em green
Yeah that is the only way I do them. My 3400, 3700, and both red 3.7's have the side exit just like the 4000 stock muffler. They look stock with that mod, sound good and wakes the saw up a bit. Plus you can do that mod in about 20 minutes.
ChipsFlyin
ArboristSite Guru
I muff modded most of my saws that have restrictive mufflers. Even with a saw adjusted to an optimum tune those mufflers hold in excess exhaust, heat up and are a recipe for carbon buildup and scored pistons.
With a regular torch, small chisel and small hammer you can get the mod straight on the outer edge.
blk05crew
I like 'em green
I muff modded most of my saws that have restrictive mufflers. Even with a saw adjusted to an optimum tune those mufflers hold in excess exhaust, heat up and are a recipe for carbon buildup and scored pistons.
With a regular torch, small chisel and small hammer you can get the mod straight on the outer edge.
That looks really good, almost factory.
Key lime?I muff modded most of my saws that have restrictive mufflers. Even with a saw adjusted to an optimum tune those mufflers hold in excess exhaust, heat up and are a recipe for carbon buildup and scored pistons.
With a regular torch, small chisel and small hammer you can get the mod straight on the outer edge.
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ChipsFlyin
ArboristSite Guru
Thanks. That was the 3400 and muff mod that I did before joining AS. Pulled the pick from my 1st post on the Poulan thread almost 400 pages ago - page 1584.
Yup.
blk05crew
I like 'em green
Do you guys that do this same muff mod put the spark screen back in or leave it out after you drill out the diffuser? I leave mine out.
ChipsFlyin
ArboristSite Guru
I leave them out. Here's the way I look at it, if the saw is running right with no carbon buildup, the filters are good and have a good seal not taking any dirt into the piston the saw really should not be producing any sparks unless there is a major problem. I have only seen sparks from a chain that is being pushed on too hard, running really dirty or way to dry.
Another factor that plays into the equation is where I cut is usually not that dry. If there is something like drought conditions or I lived in a place that was dry all the time I would probably reinstall for a period of time or leave in all the time. That's just my 2 cents.
ChipsFlyin
ArboristSite Guru
pghsteelworker
ArboristSite Lurker
Picked up a few carb kits from a local shop and they start to add up quick.
ChipsFlyin
ArboristSite Guru
5 bucks for an actual Walbro carb kit is a good price. After picking up your parts you can run right down the street and get a bite to eat at the Bonfire.
pghsteelworker
ArboristSite Lurker
They treat me good there. The Bonfire is only a couple miles from home. We eat there often. Best fish in the valley.
ChipsFlyin
ArboristSite Guru
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