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Maintenance and Cleaning
Chainsaw Model CS1400-091
Replacing the Drive Sprocket
Replace the drive sprocket after every two saw
chain replacements or when the sprocket is
damaged
Wear gloves
• Unplug the chainsaw
• Loosen the side cover release knob slightly,
but do not remove the side cover
• Loosen the chain tensioning ring (turn it
counterclockwise) as far as it will go
• Loosen the side cover release knob and
remove the side cover
• Remove the bar and chain
• Use a small flat screwdriver to pry open and
remove the e-clip, then remove the drive
sprocket and spring (Fig 47)
• Insert the new spring and drive sprocket, and
install the new e-clip (Fig 48)
• Replace the bar and chain as described in
“Replacing a Worn Saw Chain”
• Tension the chain as described in “Tensioning
the Saw Chain” in the “Preparing for Use”
section of the manual
Additional Maintenance
Information
For further information on maintaining the saw
chain, guide bar and drive sprocket, consult
the Oregon® Maintenance and Safety Manual
at http://oregonproducts com/maintenance/
manual htm
FIG. 47
FIG. 48