Spark Plug; Cooling System - Echo PB-7910T Operator's Manual

PB-7910 H/T

Spark Plug

Level 2.
Parts required: Tune-Up Kit
Use only NGK CMR7H spark plug otherwise severe engine damage
can occur.
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 102-153 kgf•cm (86-133 lbf•in).

Cooling System

Level 2.
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.
X7501201800
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MAINTENANCE
0.65 mm (0.026 in.)
39