Echo SRM-2305 - Manual (Page 21)

21 SRM-2305
CHECKING THE NYLON LINE CUTTING
ATTACHMENT
(1) Make sure each periphery of the 2 retaining pawls of
housing spreads almost fully up to the outer periphery
of the respective cover window.
(2) Check mount of cutting head on trimmer and tighten if
it is loose.
(3) Check the cutter head for deflection or abnormal noise
rotating it by hand.
Deflection or abnormal noise can cause abnormal
vibration to occur or mount to trimmer to loosen during
rotation which is dangerous.
(4) Inspect cover and tap knob for wear.
When slot appears on bottom of the tap knob or when
slot appears on cover bottom close to outlet for Nylon
line, replace them with new parts without fail.
(5) Check the cutting head for crack or chip.
Replace parts that show any crack or chip with new
ones without fail.
(1) (3)
(4)
(5)