Yamabiko ECHO SRM-420TES - Inspecting Muffl er and Exhaust Port

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SRM-420ES, SRM-420TES
T410S, B410S
T410TS, B410TS
ENGINE
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6-3 Inspecting muffl er and exhaust port
1. Remove three bolts and remove muffler (A),
muffl er gasket (B) and (C) from cylinder.
NOTE:
Replacing muffl er gasket (B) and (C) with
new one when removing them.
2. 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.
3. Remove three bolts and remove muffl er lid (D),
muffl er lid gasket (E) and spark arrestor screen (F)
from muffl er (A).
4. Remove carbon deposits from spark arrestor
screen (F) and muffl er lid (D). If screen has heavy
deposits, replace with new one.
5. Reinstall removed parts.
NOTE:
Replace muffl er lid gasket (E) with new one
when removing muffl er lid (D).
A
B
C
F
A
D
E