Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I am trying to help a neighbor with a trimmer problem.  He has a Redmax BC2001DL trimmer.  It has been running fine, but recently will quit while he is trimming.  Last year the spark arrestor became plugged and I cleaned it and everything was fine.  This year it quit running on him.  He had taken the spark arrestor out so that is not an issue.  I pulled the plug and it looked ok,cleaned it and put it back, cleaned the air filter which was fulllllllll of oil and I am not sure how it ran.  Checked the fuel pickup filter and put it all back.  The thing started right up and ran fine.  He has a tendency to baby the trimmer when he runs it.  I told him they do not like to be run at low rpm and slammed shut and that is probably where his blowback in the filter came from.  He came to me the other day and indicated it quit on him again.  I asked him how it was running when it quit, and he said fine.   I haven't looked at it since then, but he told me it has never been serviced.  I am suspecting the carburetor diaphram, but my experience with my own trimmer is that when the diaphram goes, the thing won't even start.  I have seen previous posts about putting a few drops of fuel in the carburetor, but have not had it to run that test.  I don't want to tear into the carb. just to replace the diaphram on a chance althought it couldn't hurt being that old.

Any idea?

Many thanks,

Tailwind