Echo CS-310

ENGINE
CS-310
53
8-3 Inspecting muffl er and exhaust port
1. Remove cylinder cover.
2. Remove muffl er with muffl 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 muffl er gasket with new one when
removing muffl er.
4. Remove muffler lid (A) and spark arrestor
screen (B) from muffl er.
5. Remove carbon deposits from spark arrestor
screen and muffl er lid. If screen has heavy depos-
its, replace with new one.
6. Reinstall spark arrestor screen and muffl er lid to
muffl er.
7. Reinstall muffl er with new muffl er gasket.
A
B