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CS-4510
6.
Assemble the components in reverse order.
7.
Make sure to tighten the two Bolts (B) on the Air Cleaner Case (C).
Spark Arrestor Muffler
• The spark arrestor muffler controls the exhaust noise and prevents hot,
glowing particles of carbon from leaving the muffler.
• Make sure the spark arrestor screen is in good repair and properly seated
in the muffler.
• Certain internal combustion engines operated on forest, brush, and/or
grass-covered areas in the states of Washington, Oregon, Idaho,
California, Minnesota, New Jersey and Maine, are required to be
equipped with a spark arrestor.
This requirement also applies to all U.S. Forest Service lands. In some of
these areas, the spark arrestor system must be certified per USDA Forest
Service Regulation SAE J335.
Check with your local or state authorities for specific regulations in your
area. Failure to follow these requirements is a violation of the law.
Spark Arrestor Screen
Carbon deposits in muffler will cause drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1.
Remove the clutch cover and pull the
Front Hand Guard (A) backwards.
2.
Remove the Spark Arrester Screen
Bolt (B) and remove the Screen (C)
from the silencer body.
3.
Clean carbon deposits from muffler
components.
4.
Replace screen if it is cracked, or has
holes burned through.
5.
Assemble components in reverse order.
Note: When cleaning carbon deposit, be careful, do not damage
the catalytic element inside muffler.
X7503350603
© 06/2019 ECHO Incorporated.
MAINTENANCE
A
C
B
D
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