How To Repair An Echo PB770H Blower That Won't Start Part 1

This video shows the process of inspecting, diagnosing, and repairing the first of two Echo PB-770H backpack blowers. Both are in heavy commercial use. Neither machine starts, and both are in unknown condition. This will be a 2 part video, since there are 2 machines. Tune up part numbers: Tune-up Kit: 90122Y Fuel Filter: Walbro 125-528 Spark Plub: NGK BPM8Y Air Filter: A226000410 Pre Filter: A226000480