🚨 Stihl Trimmer Bogs Down and Dies!? 🔧 (FS80R Carb Diaphragm Fix & High and Low Tuning)

​Is your Stihl string trimmer bogging down when you hit the throttle, dying at full revs, or refusing to start? In this episode, we diagnose and fix a Stihl FS 80R trimmer that lost power due to a worn-out carburetor diaphragm. ​We do a step-by-step teardown of the Zama carburetor, replace the stiff fuel pump metering diaphragm kit, reinstall the carb, and properly adjust the High (H) and Low (L) speed tuning screws to get it screaming like new. ​⏱️ CHAPTERS / TIMESTAMPS: 0:00 - Stihl FS 80R Diagnostics & Troubleshooting 1:15 - Removing the Air Filter & Carburetor 3:30 - Carb Disassembly & Diaphragm Replacement 6:45 - Reinstalling Carburetor & Fuel Lines 8:20 - Initial Start & Tuning High/Low Screws 10:15 - Final Test Run on Grass ​🛠️ TOOLS & PARTS USED IN THIS VIDEO: ​Stihl FS 80R / FS 85 Trimmer ​Zama Carburetor Diaphragm / Rebuild Kit (RB-161) ​Carburetor Adjustment Screwdriver Tool ​Carburetor Cleaner Spray ​If this DIY small engine repair guide helped you fix your weed eater, hit the LIKE button and SUBSCRIBE for more weekly power equipment repairs, restorations, and mechanical troubleshooting guides! ​#Stihl #SmallEngineRepair #StringTrimmer #CarburetorFix #DIYMechanic #FS80R