Echo SRM-580, Operator'S Manual

Page: 20 / 172

18
Before you start
Installing blade
Inspect blades before installation. Check for sharpness.
Dull blades increase the risk of blade kickback reactions.
Small cracks can develop into fractures resulting in a piece of
blade flying off during operation.
Discard cracked blades no matter how small the crack.
Blade retainer, blade, lower blade retainer, cup and nut finger
tight.
Insert locking tool into a hole located on the right side of angle
transmission while forcing retainer spring to the left side. Insert
locking tool further into blade retainer fixing slot to fix output shaft.
Tighten the nut (turn anticlockwise) using a socket wrench.
Never fasten while applying your weight. Otherwise the thread of
nut could be broken.
Replace nut and cup with new ones no matter how small the wear
is.
1. Blade retainer fixing slot
2. Blade retainer
3. Blade 4. Lower blade retainer
5. Cup
6. Nut
DANGER
If worn nut and cup for blade are used, there is a danger of
blade getting loose. Replace them with new one.
WARNING
 
Do not attempt to fit the trimmer blade with one hand or
without using the socket spanner. Fit the trimmer blade
accurately using the supplied socket spanner and tight-
en firmly in position.

The trimmer must not be used if the blade vibrates or is
loose.

Wear heavy duty gloves when working with the trimmer
blade. When replacing the trimmer blade during a trim-
ming task, ensure that the engine is switched off and
that the blades have stopped.

Do not use any tools other than the proved socket span-
ner to tighten the blade, a pneumatic or electric tool
may tighten the blade more than necessary and cause
the nut or the output shaft to break.

When turning the product over to replace the trimmer
blade, ensure that the fuel tank cap is securely in place.
‹
Failure to do so could lead to an injury or serious accident,
or cause a fire.
1. Blade 2. Locking tool
CAUTION
Fasten output shaft using locking tool securely in order to
avoid the possibility of output shaft rotating when mount-
ing cutting blade which will prevent the cutting blade fas-
tening nut from being tightened sufficiently.
1. Socket wrench 2. Blade