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24 X7501186000
© 10/2014 ECHO Inc.
MAINTENANCE PB-250LN
Cleaning Cylinder Fins
1. Remove spark plug lead from spark plug, and remove
engine cover.
2. Clean cylinder fins to allow cooling air to pass freely.
3. Reassemble parts in reverse order.
Exhaust System
Spark Arrestor Screen
Level 2.
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 deposits, be careful not to
damage the catalytic element inside muffler.
3. Clean carbon deposits from muffler components.
4. Install spark arrestor screen, gasket, plate, deflector, and
cover.
5. Loosely reassemble engine cover.
6. Tighten all screws securely.
7. Attach spark plug lead.
Exhaust Port Cleaning
Level 2.
1. Remove spark plug lead from spark plug, and remove
engine cover.
2. Place piston at top dead center. Remove muffler (A) and
heat shield (B).
3. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
Parts Required: Spark Arrestor Screen, Gasket
Parts Required: As needed: Heat Shield
A
B
C
D
E
A
B