Echo PB-500H - Manual (Page 23)

23 P
ower
B
lower
o
Perator
'
s
M
anual
Exhaust Port Cleaning
Level 2
Parts Required: As needed: Muffler gasket
1. Remove spark plug lead from spark plug, and remove engine
cover.
2. Place piston at top dead center. Remove muffler (A) and muffler
gasket (B ).
3. Use a wood or plastic scraping tool to clean deposits from cylinder
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 muffler gasket, and replace if damaged.
5. Install muffler gasket and muffler.
6. Tighten muffler mounting bolts (or nuts) to 80-95 in•lbf
(90-110 kgf•cm).
7. Install engine cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts (or nuts) to specifica-
tions.
a
B