Exhaust Muffler; Gearcase - Maruyama B23L Manuel Du Propriétaire/De L'utilisateur

3. Loosen the knob and lift off the cylinder cover.
4. Remove and clean the tail, gasket and spark
arrester with a safety solvent and a stiff brush. If
any part cannot be thoroughly cleaned, it must be
replaced.
5. Reinstall the spark arrester and tail onto the muf-
fler, then reinstall and tighten the two socket head
screws.
6. Reinstall the cylinder cover and the air filter
cover.

Exhaust Muffler

Maintenance Interval
The muffler should be inspected and cleaned after each
100 hours of use.
Muffler Maintenance
1. With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover.
2. Twist the high tension lead boot on the spark plug
back and forth a couple of times to loosen the
boot, then pull the boot off of the spark plug.
3. Loosen the knob and lift off the cylinder cover.
4. Remove the spark arrester (see spark arrester
maintenance), Clean the muffler with a stiff brush.
IMPORTANT: Don't use solvent for cleaning
inside of muffler, because of the catalytic con-
verter in muffler.
Be careful not to allow any dirt or debris to fall
into the exhaust port, as this can cause engine
damage.
232025-10.indd 28
5. Reinstall the spark arrester and tail onto muffler,
then reinstall and tighten the two socket head
screws.
6. Reinstall the cylinder cover and the air filter
cover.

Gearcase

Maintenance Interval
The gearcase should be checked for lubrication after
Bearing Lube
(P/N 211337)
Gearcase
Attaching Shaft
each 30 hours of use.
Gearcase Lubrication
Remove the cutting attachment and the boss adapter.
Clean any dirt and debris from the area between the
boss adapter and the gearcase. Remove the grease plug
from the side of the gearcase.
While rotating the attaching shaft, inject lithium-base
bearing lube (P/N 211337) through the plug hole until
the gearcase is full. Reinstall the boss adapter and
grease plug.
— US-28 —
Grease Plug
Plug Hole
Boss Adapter
13/12/25 14:51