Echo PB-620 Operator's Manual page 8

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1. SAFETY DECAL - Lists important safety precautions.
2. SPARK PLUG - Provides spark to ignite fuel mixture.
3. SPARK ARRESTOR - CATALYTIC MUFFLER / MUFFLER - The muffler or catalytic muffler controls
exhaust noise and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the
muffler. Keep exhaust area clear of flammable debris.
4. RECOIL STARTER HANDLE - Pull recoil handle slowly until starter engages, then quickly and firmly. When
engine starts, return handle slowly. DO NOT let handle snap back, or damage to unit will occur.
5. AIR CLEANER - Contains replaceable air filter element.
6. FUEL TANK CAP - Covers and seals fuel tank.
7. SHOULDER HARNESS - Used to support unit on operator's back. The straps are adjustable.
8. CHOKE - Choke is located on the side of the air cleaner. Move choke lever to "COLD START" (
choke for cold starting. Move choke lever to "RUN" (
9. PURGE BULB - Pumping purge bulb before starting engine draws fresh fuel from the fuel tank, purging air from
the carburetor. Pump purge bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump bulb
an additional 4 or 5 times.
10. LOCKING KNOB - Allows operator to adjust handle position for optimum comfort and control.
11. HANDLE - Used by operator to direct and control air flow.
12. COMBINATION THROTTLE POSITION /STOP SWITCH BUTTON - Controls engine speed and turns
ignition on or off. Forward position - STOP. First detent position - IDLE. Move button back to increase speed,
forward to decrease speed. Use Throttle Position Button to set and hold blower speed for continuous operation.
13. THROTTLE TRIGGER - Spring-loaded Throttle Trigger controls engine speed. Releasing Trigger returns
engine to speed setting set by Throttle Position Stop Switch Button. Always release trigger and allow engine to
return to idle before shutting off with Throttle Position Stop Switch Button. Use Throttle Trigger to vary blower
speed settings for intermittent operation.
14. BLOWER PIPES - Exclusive positive locking system.
15. FLEXIBLE PIPE - Allows for full range of movement.
) position to open choke.
) to close