Exhaust Port Cleaning - Echo PB-460LN Operator's Manual

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Exhaust Port Cleaning

Level 2.
Parts Required: As needed: Heat Shield
1. Remove engine cover. See "Cleaning Cylinder Fins" for step by
step instructions.
2. Place piston at top dead center. Remove muffl er (A) gasket (B),
and heat shield (C).
3. Use a wood or plastic scraping tool to clean deposits from cylin-
der exhaust port.
IMPORTANT
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.
4. Inspect heat shield (C) and gasket (B) and replace if damaged.
5. Install heat shield (C) , gasket (B), and muffl er.
6. Tighten muffl er mounting bolts (or nuts) to 105-150 in•lbf
(120-170 kgf•cm).
7. Install engine cover.
8. Install spark plug and tighten spark plug to 150-170 kgf • cm
(130-150 in • lbf).
9. Attach spark plug lead.
10. Install spark plug cover.
11. Start engine, and warm to operating temperature.
12. Stop engine, and re-tighten mounting bolts (or nuts) to specifi ca-
tions.
A
B
C