honda-power-equipment hht31s ユーザーズマニュアル

Using Blades
Refer to the chart on page 9 for appropriate blade 
applications.

If using a blade on a Honda trimmer equipped 
with a loop handle, also install the optional Honda 
conversion kit that includes a full shoulder 
harness, a barrier bar, and a debris shield for 
blades. Follow the installation instructions and 
safety information that come with the kit.

Metal blades supplied with UNBA models are 
supplied with a cover surrounding the edge of the 
blade. For your safety, and to protect the blade, 
the cover should be installed whenever the 
trimmer is not in use.

Be sure to remove the blade cover before starting 
the engine. Otherwise, the blade cover may fly off 
at high speed.

If the trimmer starts to vibrate after the blade 
strikes an object, stop the engine immediately 
and check the blade for damage. A damaged 
blade may break, and pieces of broken blade can 
become dangerous projectiles. Replace the 
blade if it is broken, cracked, bent, or damaged in 
any way.

Be very careful when operating the trimmer over 
uneven or rough ground, and when the ground is 
wet and slippery. Watch out for hidden obstacles 
that could cause you to stumble. Operate the 
trimmer only under conditions with good visibility. 
Do not operate the trimmer where you cannot 
see what it is cutting.

Thrown Debris
The trimmer will throw debris in the direction of 
blade movement at the point of contact.

The cutting line head or blade on Honda HHT25S 
and HHT31S trimmers rotate counterclockwise, 
as viewed from the operator’s position, so tilting 
the cutting line head to the right will throw debris 
away from you, and tilting to the left will throw 
debris toward you.

If the cutting line head or blade is held parallel to 
the ground, debris will scatter in all directions, 
and there will be greater friction which will wear 
out the cutting line or blade sooner.

When operating the trimmer near a hard surface 
such as a wall, work from an angle where debris 
that strikes the hard surface will ricochet away 
from you.

Gravel, loose stones, etc. can be picked up by 
the nylon cutting lines or blade and thrown many 
feet with enough force to cause serious personal 
injury and/or property damage. Before crossing 
graveled areas, release the throttle trigger to stop 
the cutting line head or blade.



Rotating cutting lines can cause serious 
abrasions and cuts, and blades can cut deeply.

Keep away from the cutting lines or blade 
whenever the engine is running.

Always stop the engine, and be sure the 
cutting line head has stopped turning, 
before inspecting or handling the cutting 
lines or blade.