Honda HHT31S Owner's Manual page 36

SERVICING YOUR HONDA TRIMMER
Removal & Installation
This section shows you how to remove and install
either style trimmer head from your trimmer.
1. Insert the tip of a commercially available
4 mm hex wrench or equivalent fully into the
gear case hole.
2. Turn the trimmer cutting-line head until you
feel the tool drop into the hole in cover plate/
spacer A. Verify the trimmer head does not
turn.
3. All output shafts use left-hand threads. Make
sure the tool remains in the hole, then grasp
the trimmer head and turn in the direction of
the arrow to remove.
4. Remove spacer B and cover plate/spacer A
from the output shaft. Note the order and
orientation of each part as you remove them.
5. Installation is the reverse of removal. Always
clean debris, dirt, loose line, etc. from the
trimmer head and output shaft area before
installation. Tighten the trimmer head
securely.
34
GEAR CASE
4 mm HEX WRENCH
CUTTING-LINE HEAD
SPACER B
COVER PLATE/
SPACER A
REMOVAL
DIRECTION
TRIMMER
HEAD
OUTPUT SHAFT
(left-hand thread)