What are the foam filter inserts for?

[Cord]

With the HD and HD2 filters there is a coarse foam insert that goes inside of the filter. What’s it’s purpose? Debating if I need to buy some as they’re missing.

 

[Stump Shot]

With the HD and HD2 filters there is a coarse foam insert that goes inside of the filter. What’s it’s purpose? Debating if I need to buy some as they’re missing.

Spitback

 

[maulhead]

Not all saws used the foam insert, 046, 460, 461, for example have a hard plastic piece that snaps on the air horn to prevent spit back, pretty sure late 066 & ms660 do also IIRC.

 

[Nutball]

A 046 I saw had an aluminum funnel that bolted onto the intake, so the foam wouldn't fit.

 

[maulhead]

A 046 I saw had an aluminum funnel that bolted onto the intake, so the foam wouldn't fit.

The part I was referring to is #12, often times it seems people remove them thinking they are not a necessary part.

I have more 046/460/461 that came to me with them MIA, then ones that still had them present.

 

[Nutball]

I've never seen #12. What's with #22 and 23? I don't think I've seen them either, or thought it was some max flow aftermarket thing.

 

[jacob j.]

I've never seen #12. What's with #22 and 23? I don't think I've seen them either, or thought it was some max flow aftermarket thing.

I believe those were an option available in Australia.

 

[Woodslasher]

I believe those were an option available in Australia.

Maybe, but wouldn't an Australian ipl look more like this?

 

[maulhead]

I believe those were an option available in Australia.

That explains that, I tried ordering those two items, a few years back at different dealers in the USA, I was told they did not even show those numbers in their system. I saw them on eBay once down under, but someone beat me to the buy it now.

It's odd you can get the Australia 460/046 muffler in the states, but not that filter.

 

[maulhead]

Maybe, but wouldn't an Australian ipl look more like this?
View attachment 353677

Technically speaking I think you are on to something.....