Echo PB-250 - Manual (Page 18)

18
Cleaning Cylinder Fins
1. Remove spark plug lead from spark plug, and remove engine
cover (6 screws).
Clean cylinder fins to allow cooling air to pass freely.
2. Loosely reassemble engine cover with 6 screws.
3. Tighten all screws securely.
4. Attach spark plug lead.
exhausT sysTem
Spark Arrestor Screen
Level 2.
Parts Required: Spark arrestor screen, Gasket
IMPORTANT
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1. Remove spark plug lead from spark plug, and remove engine
cover.
2. Remove spark arrestor cover (A), deflector (B), plate (C), gasket
(D), and spark arrestor screen (E) from muffler. Replace screen if
plugged with carbon deposits.
NOTE
When cleaning carbon deposit, be careful not to damage the cata-
lytic element inside muffler.
3. Install spark arrestor screen, gasket, plate, deflector, and cover.
4. Loosely reassemble engine cover with 6 screws.
5. Tighten all screws securely.
6. Attach spark plug lead.
a
B
D
C
E