This is the DR Trimmer   Model 64020 acquired in July of 2019.   Unlike most of the other power equipment I use this one was purchased.   It uses the same engine as the trash picked push mower we use around the yard.  It has its own story which I will relate in another post.

Had not used it much as I did not have string for it.   Purchased a spool of  (fill this in)  early summer.  The thing worked for a few hours then stopped.   The carb had the white deposits. Cleaned the carb but used one I had cleaned and stored earlier, looked identical.  But this only got another hour out of it.   Cleaned the jet, fuel tank and installed one of the clear plastic filters with the paper filter element.  

That worked up till yesterday.   It just stopped while running but not in use.   Figured it was the fuel filter.  Pulled off the air cleaner and it was solid with green plant dust.  They may have been the cause.   But I had already loosened the nut on the fuel bowl so I swapped out the jet for one I recently clean.

What was wrong?  Most likely the poor thing was starved for air.   Either that or the jet plugged which is possible but unlikely with the paper fuel filter.

Another problem with this machine is that it throws its strings.   The string is installed as shown in the following image.

The strings are supposed to be cut to 23 inches.   I found that making them a bit longer and then tying a knot in the strings where they exit the mow head generally keeps them in place up till everything up to and including the knot is gone.

It could well be that DR Trimmer brand strings/line will work better.