Honda HHT25S Owner'S Manual Download Page 20

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Blades

If installing a metal blade on a Honda trimmer equipped with a loop
handle, also install the optional

Barrier Kit

that includes a full

shoulder harness, a barrier bar, and two different debris shields for
metal blades. Follow the safety information and installation
instructions that come with the kit.

Grass/Weed Blades

Grass/weed blades, which may be
plastic or metal, are used as an
alternative to nylon monofilament line
for cutting grass and ordinary weeds.
However, blades should never be used
for edging against solid surfaces.

Weed/Brush Blades

These metal blades have
chisel-shaped teeth that are used for
cutting through field grass, thick weeds,
and light brush. They are not designed
for sawing woody material. The teeth
must be sharp for good results.

Brush/Wood Blades

These metal saw-tooth blades are used
for sawing through saplings, shrubs
and woody brush. The teeth must be
sharp for good results. Brush/wood
blades will also cut grass and weeds,
but they are not efficient for that
purpose.

Blade Cover

Use the blade cover to protect yourself
from injury while installing or removing
the blade and to protect the blade from
damage during storage.

Blade Inspection

Always wear gloves when working
around the blade. Before each use,
check the blade for wear and damage,
and check the tightness of the blade lock nut. Examine the entire
head area, including the debris shield, and clear or clean it free from
dirt, debris, loose string, wire, or any other foreign materials.

A dull blade can be sharpened, but a blade that is worn out, bent,
cracked, chipped, or otherwise damaged must be replaced.
When a blade needs sharping or replacement, take the trimmer to a
Honda trimmer servicing dealer. Or, if you have a torque wrench, you
can remove and install a blade yourself.

Blade Removal and Installation

Always wear gloves and install the blade cover on the blade when
working around the blade.
A torque wrench is required to install the blade. If you do not have a
torque wrench, have a Honda trimmer servicing dealer tighten the
blade lock nut for you before using the trimmer.
If the blade lock nut is tightened too much, the output shaft can break.
If the blade lock nut is not tightened enough, the blade could come off.
In either case, it would be possible for the blade to fly off while you are
operating the trimmer.
The blade lock nut is specially designed for this application. When
replacing the lock nut, use only a Honda Genuine replacement lock
nut.
BLADE SHARPENING: To avoid weakening the blade or causing
imbalance or poor cutting, the blade should be sharpened by trained
staff at a Honda trimmer servicing dealer.
BLADE REPLACEMENT: Your Honda trimmer servicing dealer has
cutting attachments that have been designed and approved for your
trimmer and are covered by a warranty. Non-Honda attachments are
usually designed for universal applications. Although aftermarket
attachments may fit on your trimmer, they may not meet factory
specifications and could make your trimmer unsafe.
1. Install the protective plastic cover that came with the blade (U-type

brush/wood blade only).

2. Insert a commercially available 4 mm hex tool or equivalent fully

into the gear case hole.

3. Turn the blade until you feel the tool drop into the hole in cover

plate/spacer A. Verify the blade does not turn. The output shaft and
blade lock nut have a left-hand thread. Make sure the tool remains
in the hole, then loosen the blade nut as shown. Pay attention to
the order and orientation of the parts as they are removed.

4. Installation is the reverse of removal. Make sure you install the

blade with the cutting edges in the direction of rotation (

page 23

Be sure to align the hole in the blade with the shoulder on cover
plate/ spacer A. Tighten the blade nut to the specified torque.

TORQUE: 180 in•lb (20 N

•



WARNING

A worn, damaged or cracked blade can break, and pieces
of the damaged blade can become dangerous projectiles.

A dull blade is more likely to snag and thrust (kickback).

Inspect the blade regularly, and do not operate the trimmer
with a dull, worn, or damaged blade.

NORMAL