TROUBLESHOOTING
PB-580H/T
40
X7505200705
© 12/2017 ECHO Inc.
Throttle Cable Adjustment
Level 1
If engine idle speed changes when blower pipe is moved, or engine will not
reach full wide open throttle speed, adjust throttle cable.
1.
Loosen handle adjustment
knob (C) and tilt Tube Throttle
handle forward to expose
Adjustment Screw (D).
2.
Turn Adjustment Screw until
Throttle Trigger free play is
4 - 6 mm (3/16-1/4 in.).
3.
After adjustment, squeeze and
release Throttle Trigger several
times to verify Carburetor
Throttle Shaft has full range of
movement from idle to wide
open throttle positions.
TROUBLESHOOTING
Fuel vapors are extremely flammable and may cause fire and/or
explosion. Never test for ignition spark by grounding spark plug
near cylinder plug hole, otherwise serious personal injury may
result.
C
D
4-6 mm
