Stihl 039 air filter

[DBCriss]

I'm replacing my air filter on a Stihl 039. The new filter comes with an air scoop on the back. My Stihl carb does not have a place for this air scoop. Do I have to buy the new style carb, or can I block off the scoop with tape?

 

[Bob Hedgecutter]

Well, it depends on which carb you have as to which filter you need- your original filter (which looks like it would wash up just fine) is for the carb with the flat top cover (HD-5) and your replacement filter is for the carb with the compensator top cover (HD-18 or 19).
Where did the new filter come from? Your local Stihl dealer- or cheapest on Amazon?

 

[DBCriss]

Amazon. The last time I bought an air filter for my MS250 at the Stihl dealer it was $20 each. Later I learned they were 6 for $10 on Amazon. So, I just can't afford the dealer. I will go tomorrow and at least ask them if they have it and how much does it cost.

But regarding this 039, I'd wash the old filter if I knew how. How do you wash filters? And if I could buy a new one, are these filters without the additional air scoop for the HD-5 still available for sale? I've looked at many websites selling Stihl parts and can't find one. I'll search using your HD-5 reference number and see how that goes. That's good info, the HD-5, didn't know that. Thanks!

 

[Bob Hedgecutter]

Sellers of aftermarket parts do not really care or get too precise on your product descriptions- the filter fits 039/390- but they neglect to mention there are different types and different eras of 039's.
Its the whole "we don't really care- we just want your money" type of thing.

You can wash bad gunk off an air filter with gas- but be aware this can dissolve some types of flocking used on some filters.
Warm water and strong solution dish soap work, soak and wash well-rince- blow off with compressed air and allow to dry before refitting.
Some filters separate into two halves and can be washed from the inside.

Generally, genuine filters filter better- often aftermarket ones are bought from suppliers for a fraction of their onselling price and are marked up hugely by the sellers- so they appear half the price- but were cheaply made and were cheap wholesale for a reason.

Oh, no idea if the original filter is still available where you live- I live half a World away and in a different parts region.