Cooling System - Echo SHC-2620 Operator's Manual

SHC-2620
Use only NGK CMR7H spark plug otherwise severe engine damage
may 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 (89-133 in•lbf).

Cooling System

Level 2.
Parts Required:
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.
X7502342001
© 6/2017 ECHO Inc.
None if you are careful.
MAINTENANCE
0.60 - 0.70 mm
(0.023 - 0.027 in.)
29