Honda HHT31S Owner's Manual page 40

SERVICING YOUR HONDA TRIMMER
Spark Arrester Service
HHT31S
The spark arrester must be serviced every 100
hours to keep it functioning as designed.
If the engine has been running, the muffler will be
very hot. Allow the muffler to cool before
servicing the spark arrester.
1. Remove the four 5 x 18 mm bolts from the
recoil starter, and remove the recoil starter.
2. Disconnect the spark plug cap from the spark
plug. Pull the spark plug wire and the ignition
switch wire out of the retainers in the top
cover.
3. Remove the two 5 x 22 mm bolts from the top
cover, and remove the top cover.
4. Remove the three 5 mm screws from the
muffler cover, and remove the muffler cover.
5. Remove the 4 mm screw from the spark
arrester, and remove the spark arrester.
6. Use a brush to remove carbon deposits from
the spark arrester screen. Be careful to avoid
damaging the screen.
The spark arrester must be free of breaks and
holes. Replace the spark arrester if it is
damaged.
7. Install the spark arrester, muffler cover, top
cover, and recoil starter in the reverse order of
disassembly.
SPARK
ARRESTER
SCREEN
38
RETAINERS
IGNITION
SWITCH
WIRE
5 x 22 mm
BOLTS
SPARK
ARRESTER
5 x 10 mm
4 mm
SCREW
SCREW
RECOIL STARTER
5 x 18 mm BOLTS
SPARK
PLUG
CAP
SPARK
PLUG
WIRE
TOP
COVER
MUFFLER
5 x 16 mm SCREW
MUFFLER
COVER