Inspecting Muf Er And Exhaust Port - Yamabiko ECHO PB-2520 Service Manual

PB-2520
EB252
7-3 Inspecting muffl er and exhaust port
B
ENGINE
A
C
1. Remove muf er.
2. Inspect cylinder exhaust port (A) and clean the
port (A) 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 er gasket with new one when
removing muf er.
3. Remove bolt (B) and spark arrestor screen (C)
from muf er.
4. Remove carbon deposits from spark arrestor
screen (C). If screen has heavy deposits, replace
with new one.
5. Reassemble spark arrestor screen (C) and tight-
en bolt (B).
6. Reinstall muf er with new muf er gasket.
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