Checking spark arrestor screens for carbon buildup

[Alan]

If you've been putting your saw through its paces and it’s starting to cough a bit, it might be time for a little maintenance. Let’s share some handy tips and quick checks to keep those spark arrestor screens clean. This way, your chainsaw can breathe easy and fire up without a hitch every time

 

[STIHLTECH]

Run it wide open and clean the air filter to prevent it.

 

[Alan]

Appreciate the tip. It's definitely a handy trick to keep the saw running smoothly.

 

[kevinj54]

Stihltech, what are your thoughts about 2 cycle oil & plugged screens.

It seems that I had more plugging when I switched to Stihl silver from the orange bottle. I do run rec fuel supposedly no ethanol.

I have ran Amsoil saber for the past 2 years which was recommended by a local repair place & supply.

All my screens were clean when I was doing winter maintenance.

 

[STIHLTECH]

The clogged air filter will cause a rich condition. Without the rich condition, the screen will not clog. This will also include an over rich carburetor, dull chain, etc. If you are mixing the Stihl oil 50 to 1, it will not clog the screen. The exception is a saw (or any 2 stroke equipment) that is ran at less that wide open throttle. See it a lot on small homeowner saws and trimmers.

The exhaust and muffler must get hot enough to keep the carbon from sticking to the screen. This is why pro saws seldom have this issue. Ran all out and all day.

 

[kevinj54]

I guess I can agree on most of what you said as my FS85 trimmer was always the worst offender as they do idle a bit more than a saw.

My little 018 which does not idle much also was plugging up.

The 260 pro never plugged up, nor my old Homelites.

Also all my air filters are kept clean.

Thanks for your insight.

 

[Alan]

Appreciate the great insights, maintenance, oil, and running habits really make a difference.