Echo CS-310, Service Manual

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ENGINE
CS-310
53
8-3 Inspecting muf fl er and exhaust port
1. Remove cylinder cover.
2. Remove muf fl er with muf fl er gasket.
3. Inspect cylinder exhaust port and clean the port
using wooden or plastic stick if carbon is found.
NOTE: When cleaning exhaust port, always posi-
tion piston at Top Dead Center (TDC) to prevent
carbon from entering cylinder. Do not use metal
tool, and be careful not to scratch piston or cylin-
der.
NOTE: Replace muf fl er gasket with new one when
removing muf fl er.
4. Remove muffler lid (A) and spark arrestor
screen (B) from muf
fl er.
5. Remove carbon deposits from spark arrestor
screen and muf
fl er lid. If screen has heavy depos-
its, replace with new one.
6. Reinstall spark arrestor screen and muf fl er lid to
muf fl er.
7. Reinstall muf fl er with new muf fl er gasket.
A
B