What does it mean when 4 LEDs flash red on a Stihl HLA 66?
- LLinda BartlettAug 31, 2025
If 4 LEDs flash red on your Stihl Trimmer, there may be a battery malfunction, poor electrical contact, or the trimmer/battery is damp. Try removing and reinserting the battery. Also, clean the contacts in the battery compartment and ensure both the trimmer and battery are dry.
 











