680ES OPERATOR MANUAL
38
© 2015 ICS®, Blount International Inc. Specications are subject to
change without notice. REV071315 F/N 577451
Maintenance
AIR FILTER
The polyester air lter must be kept clean for the
engine to operate properly. If the saw is not reaching full RPM, most likely the air
lter is dirty or wet.
• The air lter should be free of holes and white in color
• Replace the air lter when dirty or wet.
• When replacing the air lter, clean the area inside the air
box with a clean towel prior to installing new lter
• Inspect air box seal for wear or damage. Replace if
damaged.
FUEL SYSTEM
• Clean area around fuel cap before removing.
• Check the fuel cap and seal for damage.
• Check the fuel line for damage.
• Check fuel lter, assure it is free of debris.
• Replace fuel lter if it is stained dark or clogged (fuel lter cannot be cleaned).
After each use After every 10 hours After every 40 hours
External Cleaning Clean Starter Housing Replace Spark Plug
Fasteners/Screws Check Spark Plug Check Fuel Filter
Air Intake
Functional Inspection Functional Inspection Functional Inspection
General Inspection Vibration Isolators Fuel System
Throttle Trigger Lockout Muer Fuel Filter
Multi-function Lever Carburetor Air Filter
Mud Flap Starter Housing Clutch Cup
Guidebar and Chain Sprocket Clutch