Spark Arrestor Muffler; Exhaust Port Cleaning - Echo CS-310 Instruction Manual

SParK arrESTOr MUFFLEr

• The spark arrestor muffler controls the exhaust
noise and prevents hot, glowing particles of car-
bon 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.

EXHaUST POrT CLEaning

Level 2
Parts Required: As needed: Muffler gasket
1. Remove air filter cover and remove spark plug lead.
2. Place piston at top dead center. Remove muffler (A) and muffler
gasket (B ).
3. Use a wood or plastic scraping tool to clean deposits from cylin-
der exhaust port.
iMPOrTanT
Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the exhaust
port. Do not allow carbon particles to enter the cylinder.
4. Inspect muffler gasket, and replace if damaged.
5. Install muffler gasket and muffler.
6. Tighten muffler mounting bolts (or nuts) to 60-80 in • lbf (70-90
kgf • cm).
7. Attach spark plug lead.
8. Replace air filter cover.
9. Start engine, and warm to operating temperature.
10. Stop engine, and re-tighten mounting bolts (or nuts) to specifica-
tions.
CS-310
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.
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B
a