Exhaust Muffler; Maintenance Interval - Maruyama B420L Manual Del Propietario U Operador

4. Withdraw the spark arrester, using a suitable pair
of pliers.
NOTE: Do not crush or distort the spark arrest-
er flange during removal.
5. The screen can be cleaned using a non-flammable
solvent and stiff wire brush.
NOTE: If any part cannot be thoroughly
cleaned, it must be replaced.
6. To install insert the spark arrester into the exhaust
outlet while aligning the holes in the arrester
flange and outlet for the retaining screw. Then
install the screw.
7. 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 filter cover.
2. Loosen the knob and lift off the cylinder cover.
3. Withdraw the spark arrester using a suitable pair
of pliers.
NOTE: Do not crush or distort the spark arrest-
er flange during removal.
4. Remove the three socket head screws holding the
muffler body from cylinder.
Screw
Spark Arrester
5. Clean exhaust port of cylinder, exhaust outlet of
muffler and spark arrester with safety solvent and
stiff brush.
IMPORTANT: Be careful not to allow any dirt
or debris to fall into the exhaust port, as this
can cause engine damage.
6. To reassemble the muffler body to the cylinder,
apply Removal Loctite to the three socket head
screws, then reinstall and tighten the three screws.
7. Reinstall the spark arrester onto the muffler body,
then reinstall and tighten the screw.
8. Reinstall the cylinder cover and the air filter
cover.
— US-23 —
Muffler Body
Removal Loctite