Echo SRM-22GES Operator's Manual page 18

0.6 to 0.7 mm
Grease tube
Plug (Bolt)
SRM-22GES
Cylinder fins
Air intake
Silencer cover
Silencer
Hexagonal
Two bolts
wrench
Angle transmission
COOLING SYSTEM MAINTENANCE
IMPORTANT
To maintain proper engine operating temperature,
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,
or
• Dust and grass build up on the out side of the
cylinder. This build-up insulates the engine and
prevents the heat from leaving.
Removal of cooling passage blockages or
cleaning of cylinder fins is considered "Normal
Maintenance". Any resultant failure attributed to
lack of maintenance is not warranted.
• Remove dust and dirt from between fins.
• Before each use, remove accumulated debris from bottom
engine intake grille located between the fuel tank and
starter.
CLEANING SILENCER
• Clean deposits from silencer and tighten two bolts.
CHECK SPARK PLUG
• Check plug gap. Correct gap is 0.6 to 0.7 mm.
• Inspect electrode for wear.
• Inspect insulator for oil or other deposits.
• Replace plug if needed and tighten to 15 - 17 N•m (150
to 170 kgf•cm).
ANGLE TRANSMISSION
• Remove plug from angle transmission.
• Add grease, if necessary, using low pressure pump.
• Reinstall plug.
NOTE
Use good quality lithium multi grease. DO NOT
overfill housing.
18