Now this is a strange one. I volunteer for our small city to maintain equipment. They have all Husqvarna equipment, mowers, blowers, chainsaw, trimmers. They have three 128LD trimmers. One that will start but not stay running. I did normal maintenance on it, changed plug, primer bulb, fuel lines, fuel filter and air filter. When I took the old air filter out, I noticed a small hole in the filter about the size of a pencil. I felt it and it has been burned in. I put a new filter on, started it and it will run only a few moments. I can pump the primer bulb and it will start and run a few moments. I took the new air filter out and it now has a small hole burned in it directly inline with the carb throat. Ok, so we have 3 identical trimmers. I looked at the other two air filters and no hole burned in. So I took the fuel tank, carb and air filter off one running trimmer and put on this one and the same issue. Runs just a few moments, then dies and now this air filter has a hole burned in it! I am totally puzzled. Does anyone have an idea? I'm open to try anything at this point. Thanks!!
p.s. I know, it's probably not worth it to fix it but I'm always up for a challenge and I would really like to figure this puzzle out, having never encountered such before.
I don't see in the parts list a flywheel key. I wonder if it is like my Stihl chainsaw with the key a part of the flywheel? I don't have a puller to check. I changed the coil and it will run but not idle. I ordered a new carb. If that doesn't help, to the dump it goes.
#9
Scrubcadet10
Some "flywheel" keys are actually made into the flywheel... the flywheel has a notch in it that goes into a corresponding divot on the crank.. instead of having a separate key.
