Operator's Manual

CS-3510 MAINTENANCE
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© 8/20 ECHO Incorporated
1. Remove air cleaner cover and
remove spark plug lead.
2. Remove spark arrestor cover
screw (A), spark arrestor
cover(B) and screen (C) from
muffler (D) 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 not to damage the
catalytic element inside muffler.
Exhaust Port Cleaning
Level 2.
1. Remove cylinder cover and
remove spark plug lead.
2. Place piston at top dead center.
3. Remove spark arrestor cover
and screen.
4. Remove muffler screws (A) and
muffler body (B) and gasket (C).
Check parts for wear or damage,
and replace if necessary.
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.
5. Use a wood or plastic scraping
tool to clean deposits from
cylinder exhaust port.
6. Install muffler. Tighten muffler
mounting bolts (or nuts) to 7 - 9
N•m (60- 80 in•lbf).
7. Install cylinder cover and attach
spark plug lead.
Parts Required: As needed: Muffler gasket
A
B
C
D
A
B
C