SRM-2320T MAINTENANCE
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© 08/2019 ECHO Inc.
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 150-170 kgf•cm (130-150 in•lbf).
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.
Removal of cooling passage 
blockages or cleaning of cooling 
fins is considered “Normal 
Maintenance.” Any failure 
attributed to lack of maintenance is 
not warranted.