Stihl 034 inlet screen plugs up

[logrunner]

Early model 034 has been fantastic saw for over 30 years. About 3 years ago the carb fuel inlet screen would plug up with I guess saw dust. I would run it for a few hours and then clean it out and go again. Then it got to the point I had to buy a new carb, fuel hose, fuel filter, air filter. Thinking I had it fixed ran it for 30 minutes and it quit running. Inlet screen plugged again. The impulse hose looks ok. The gas tank is clean and the fuel I use is clean. The saw is original except for carb and air filter. I can usually fix anything but this has me baffled. I even thought about taking it somewhere to be fixed but they aren't going to run it for a half hour to see it plug up. Thanks for any help.

 

[CR888]

Well how can a carb screen get plugged up if you have a proper fuel filter doing its job & fuel lines without cracks or holes and a fuel tank that's clean.....there is a weak link in the system I should guess. Are you using a new OEM fuel filter?

 

[ray benson]

Is this possibly your problem?
https://www.arboristsite.com/commun...ng-fried-piston-cylinder.165408/#post-2787644

 

[s sidewall]

Have you tried a felt fuel filter, catch a lot more than these new plastic filters do.

Steve

 

[logrunner]

The last build up looked to be black but could still be saw dust I guess. I doubt the fuel filter is OEM. Never thought about the gas can but I have three saws and use the same can for all. I will buy a new can and felt fuel filter. Thanks for the ideas.