Spark Plug; Cooling System - Echo PB-211 Operator's Manual

18
WARNING
Muffler operates at extremely high temperatures. Muffler area must
be kept clean. Do not perform maintenance on the engine or muffler
until engine and muffler are completely cool, otherwise serious
personal injury may occur.

SPARK PLUG

Level 2.
1. Remove spark plug and check for fouling, worn and rounded
center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to
clean. Remaining sand will damage engine.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 15 - 17 N m (130 - 145 in. lb.).

COOLING SYSTEM

Level 2.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder fin area. This flow of air carries
combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching the
cylinder.
• Dust and grass build up on the outside of the cylinder. This build up
insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages or cleaning of cooling fins is
considered "Normal Maintenance". Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
• Brush accumulated debris from intake grill.
DANGER
0.65 mm
(0.026 in.)
INTAKE
GRILL