3 hrs ·
My next door neighbor brought his trimmer over because it wasn't working properly.
His trimmer is a Husqvarna 223L which is a 25cc engine using a clamshell design bottom end. It has a Zama C1Q carb, a Cat muffler, and a foam air filter contained in a bolt on plastic housing/manifold attached to the inlet side of the carb.
I decided that rather than simply "repair" his trimmer, I would mod the muffler and hopefully return it in a much better state of tune that when he first purchased it!
I thought I would include some pictures and the flowbench data for all to see.
Pics to follow.
My next door neighbor brought his trimmer over because it wasn't working properly.
His trimmer is a Husqvarna 223L which is a 25cc engine using a clamshell design bottom end. It has a Zama C1Q carb, a Cat muffler, and a foam air filter contained in a bolt on plastic housing/manifold attached to the inlet side of the carb.
I decided that rather than simply "repair" his trimmer, I would mod the muffler and hopefully return it in a much better state of tune that when he first purchased it!
I thought I would include some pictures and the flowbench data for all to see.
Pics to follow.